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Introduction to ATmega128

Hey Guys! Hope you are doing well. I am back to feed you with valuable information relating to engineering and technology. Today, I'll uncover the details on the Introduction to ATmega128. It is an AVR, 8-bit low power microcontroller, that comes with a 64-pin interface and is based on RISC architecture.  Availability of 133 Powerful Instructions with single clock cycle and 32 x 8 General Purpose Working Registers make this device an ideal choice for many applications where decent code execution is required. The memory space incorporates on this module is more than normal AVR controllers including Program memory around 128K, enough to store the number of instructions on a single chip. In this post, I'll try to cover each and everything related to ATmega128, so you can get clear idea what is this about before aiming to pick it for your relevant project. Let's jump right in and get down to the nitty-gritty of this module.

Introduction to ATmega128

• ATmega128 is an AVR, 8-bit low power microcontroller that contains 64-pin interface and is based on RISC architecture.
• It is mainly used in an embedded system and industrial automation.
• This AVR controller differs from PIC controllers in accordance with the instruction set where AVR requires one clock cycle to execute a number of instructions while PIC controllers need a number of clock cycles to execute a single instruction.
• The ADC is included in the device that makes it an ideal choice for sensor interfacing where it receives the analog signal and converts it to a digital one. There are total 8 channels available on the ADC module.

• Apart from communications protocols like SPI, I2C, and USRAT, this tiny module comes with watchdog timers, external interrupts, power up timer, 6 sleep modes and programming enable pin.
• The Program Memory is based on Flash and comes with a memory space around 128K while EEPROM and SRAM are 4K each.
• If you are an expert or newbie, you need this module every now and then for the development of the electronic projects where automation is a major concern. Ability to perform a number of functions without buying external components makes this device highly economical and best choice for the tech geeks.

1. ATmega128 Features

This AVR microcontroller comes with very useful features. Large memory space and number of pins make this device a step ahead for driving automation in the relevant project. Following table shows the main features of ATmega128.

No. of Pins	64
CPU	8-Bit AVR
Operating Voltage	4.5 to 5.5 V
Program Memory	128K
Program Memory Type	Flash
RAM	4K
EEPROM	4K
ADC Number of ADC Channels	10-Bit 8
Analog Comparator	Yes
PWM Channels	6
Oscillator	up to 16 MHz
Timer (4)	16-Bit Timer (2) 8-Bit Timer (2)
Packages (3)	PDIP TQFP QFN
Power Up Timer	Yes
I/O Pins	53
Manufacturer	Microchip
SPI	Yes
I2C	Yes
Watchdog Timer	Yes
Brown out Detection (BOD)	Yes
USART	Yes
Sleep Modes	6
Minimum Operating Temperature	-40 C
Maximum Operating Temperature	85 C

2. ATmega128 Pinout and Pin Description

The pinout and pin description of each pin will help you understand the major functions associated with each pin. Some pins are able to perform more than one functions on each pin.

Pinout

Following figure shows the pinout of ATmega128.  

• The AVCC is the voltage applied to the ADC module while AREF is the reference voltage applied to the controller. The VCC and GND are the voltage supply and ground pins respectively.

Pin Description

Following table shows the description of each pin.

1	PEN	Programming Enable
2	PE0 RXD PDI	I/O Pin Serial Receive Pin (USART)
3	PE1 TXD PDO	I/O Pin Serial Transmit Pin (USART)
4	PE2 XCK0 AIN0	I/O Pin External Interrupt PinAnalog Comparator Positive
5	PE3 OC3A AIN1	I/O Pin Dedicated Pin for Timer (PWM Channel) Analog Comparator Negative
6	PE4 OC3B INT4	I/O Pin Dedicated Pin for Timer (PWM Channel) Interrupt
7	PE5 OC3C INT5	I/O Pin Dedicated Pin for Timer (PWM Channel) Interrupt
8	PE6 T3 INT6	I/O Pin Timer 3 Interrupt
9	PE7 ICP3 INT7	I/O Pin Timer/Counter3 Input Capture Pin Interrupt
10	PB0 SS	I/O Pin SS (Slave Select Input for SPI).  This pin is set to low when the controller acts as a slave
11	PB1 SCK	I/O Pin SCK (Serial Clock for SPI). This clock is shared between the controller and external devices for accurate data transfer
12	PB2 MOSI	I/O Pin MOSI (Master Output Slave Input) for SPI communication. The data is received by this pin when the microcontroller acts as a slave
13	PB3 MISO	I/O Pin MISO (Master Input Slave Output) for SPI communication. The data is sent to the master using this pin when microcontroller acts as a slave
14	PB4 OC0	I/O Pin PWM Channel Output
15	PB5 OC1A	I/O Pin PWM Channel Output
16	PB6 OC1B	I/O Pin PWM Channel Output
17	PB7 OC2 OC1C	I/O Pin PWM Channel Output
18	PG3 TOSC2	I/O Pin MISO (Master Input Slave Output) for SPI communication. When the controller acts as a slave, the data is sent by a controller to master through this pin Interrupt
19	PG4 TOSC1	I/O Pin SCK (SPI Bus Serial Clock). This clock is shared between the controller and other devices for data transfer Interrupt
20	RESET	Voltage Supply Pin for ADC
21	VCC	Voltage Reference
22	GND	Ground Pin
23	XTAL2	Crystal Oscillator Output
24	XTAL1	Crystal Oscillator Input
25	PD0 SCL INT0	I/O Pin I2C communication External Interrupt 0
26	PD1 SDA INT1	I/O Pin I2C communication External Interrupt 1
27	PD2 RXD1 INT2	I/O Pin Serial Communication Receive Pin (USART) External Interrupt 2
28	PD3 TXD1 INT3	I/O Pin Serial Communication Transmit Pin (USART) External Interrupt 3
29	PD4 ICP1	I/O Pin Timer/Counter1 Input Capture Pin
30	PD5 XCK1	I/O Pin External Clock I/O for USART
31	PD6 T1	I/O Pin Timer 1
32	PD7 T2	I/O Pin Timer 2
33	PG0 WR	I/O Pin Control Pin for writing to the external memory
34	PG1 RD	I/O Pin Control Pin for reading from the external data memory
35	PC0 A8	I/O Pin
36	PC1 A9	I/O Pin
37	PC2 A10	I/O Pin
38	PC3 A11	I/O Pin
39	PC4 A12	I/O Pin
40	PC5 A13	I/O
41	PC6 A14	I/O Pin
42	PC7 A15	I/O Pin
43	PG2 ALE	I/O Pin ALE (Address Latch Enable), it is used when multiple memory chips are connected to the microcontroller and only one of them needs to be selected
44	PA7 AD7	I/O Pin
45	PA6 AD6	I/O Pin
46	PA5 AD5	I/O Pin
47	PA4 AD4	I/O Pin
48	PA3 AD3	I/O Pin
49	PA2 AD2	I/O Pin
50	PA1 AD1	I/O Pin
51	PA0 AD0	I/O Pin
52	VCC	Voltage Supply Pin
53	GND	Ground
54	PF7 ADC7 TDI	I/O Pin ADC Channel 7 JTAG Interface
55	PF6 ADC6 TDO	I/O Pin ADC Channel 6 JTAG Interface
56	PF5 ADC5 TMS	I/O Pin ADC Channel 5 JTAG Interface
57	PF4 ADC4 TCK	I/O Pin ADC Channel 4 JTAG Interface
58	PF3 ADC3	I/O Pin ADC Channel 3
59	PF2 ADC2	I/O Pin ADC Channel 2
60	PF1 ADC1	I/O Pin ADC Channel 1
61	PF0 ADC0	I/O Pin ADC Channel 0
62	AREF	Reference Voltage
63	GND	Ground
64	AVCC	Voltage Supply Pin for ADC

3. ATmega128 Main Functions

ATmega128 can perform a number of functions on a single chip. Large memory space with more number of pins interface put this device ahead of other controllers available in the AVR community. Following are the major functions associated to this tiny module.

Timer

Atmega128 comes with four timers i.e. two 8-bit and two 16-bit timers. These timers play a vital role in creating a delay of any running functions and can be used both ways i.e. timers as well as counters where former is used to control the internal functions of the controller and increments the instruction cycle, while later counts the number of intervals by incrementing the rising and falling edge of the pin and is mainly used for external functions. Two other timers added in the device are

• Oscillator Start-up Timers
• Power Up Timer

Oscillator start-up timer resets the controller to stabilize the crystal oscillator. And power-up timer is used to generating a minor delay once you power on the device, helps in stabilizing the power signals.

Number of Sleep Modes

This device incorporates Six Sleeping Modes for power saving purpose. These modes include:

• Power-save
• Power-down
• Idle
• ADC Noise Reduction
• Standby
• Extended Standby

Brown Out Detect (BOD)

The BOD, also known as BOR (Brown Out Reset), is a valuable addition to the device that helps in resetting the module once the Vcc (voltage supply) goes below a brownout threshold voltage. In this mode, multiple voltage ranges are produced to save the module once the power drops at the voltage supply line. If you aim to bring back the device from BOD function, it is advised to enable the Power Up Timer for creating a slight delay.

Watchdog Timer

Most of the chips, if not all, produced by Microchip, incorporate a built-in watchdog timer that resets the controller if the running program hangs up during compilation or gets stuck in the infinite loop. The main purpose of this timer is to prevent the controller from resetting it manually, giving you a slight edge over other processors where you need to wrestle your mind to manually reset the controller in case there comes a glitch in the running function. The watchdog timer behaves like a countdown timer.

Interrupt

The interrupts are very helpful for calling the desired function that puts the main running function on hold until the required instruction is executed. The controller goes back to the main program once the interrupt is executed.

I2C Communication

I2C protocol is used to layout the communication between low-speed devices like ADC and DAC converters and microcontrollers. It is a two wire communication that mainly contains two lines

• Serial Clock (SCL)
• Serial Data (SDA)

The former is a clock signal, mainly used to synchronize the data transfer between the devices and is generated by the master device, while the later is used to hold the desired data.

SPI Communication

ATmega128 houses a serial peripheral interface (SPI) that is mainly used for communication between the microcontroller and other peripheral devices such as sensors, shift registers, and SD cards. Separate clock and data lines are available, layered with a select line for selecting the relevant device for communication. Two pins used for SPI communication are as follow

• MOSI (Master Output Slave Input)
• MISO (Master Input Slave Output)

The MOSI pin is used for receiving the data when the microcontroller acts as a slave. Similarly, MISO helps in sending data by the microcontroller while later acts as a slave mode.

4. ATmega128 Compilers

Compilers are the basic software used for writing and compiling the code into the AVR controller. Some are free to use and some are paid. If you are getting your hands-on very first time with the controllers, it is advised to go with the free version, you can move to paid version as you grow and learn with the passage of time. Following are some basic compilers mainly used for AVR microcontrollers.

• The IAR is a paid compiler and comes with a professional interface. As per the testimonials and personal experience of some of the experts, this compiler proves to the best version for the AVR microcontrollers.
• CodeVision houses a CodeWizard and turns out to be highly economical for the controllers.
• The GCC Port is another good pick to start with, but it comes with a bit complex interface. It works with both Windows and Linux operating systems.
• ImageCraft is a valuable addition for compiling the code, but it doesn't incorporate some GUI features like editor and project management that may put you in big trouble during the code execution.

5. ATmega128 Memory Interface

Two memory types are mainly used in ATmeag128 named as Program Memory (Flash Memory) and SRAM memory where former makes use of a single pipelining for the execution of the instructions and later is a volatile memory mainly depends on the power supply source.  This AVR module incorporates a Harvard Architecture where separate memories spaces are reserved for both data and program. The memory space in the controller is nothing but a combination of the linear and regular memory maps. The Fast Access File Register is layered with 32 x 8 – Bit general purpose working registers. The single clock cycle is enough for accessing these registers and laying out the ALU (Arithmetic Logic Unit) operation where the result is stored in the Register file.

Program Memory (ROM)

Program memory has a memory space around 128K where recent instruction is called followed by the next instruction, executing the instructions in every clock cycle.

• It is mainly categorized into two parts named as the Boot Program section and Application Program section. The former comes with Applications Flash Memory that plays the main part for SPM instruction writing.

Data Memory (RAM)

The data memory has a memory space around 4K. Five different addressing modes in the AVR architecture are used for addressing this RAM memory. These modes are named as

• Direct
• Indirect
• Indirect with Displacement
• Indirect with Pre-decrement
• Indirect with Post-increment.

Three address registers, known as X, Y, and Z, increment and decrement in indirect addressing modes. Control registers are present in the flexible interrupt module that mainly come with global interrupt enable bit laying in the Status Register. These interrupts come with an Interrupt Vector Table where Interrupt Vector is a major part of it and both are inversely proportional to each other. It is important to note that, the Interrupt Vector table depends on the Interrupt Vector Position.

• The ALU module operates in a single clock cycle and is divided into three main functions called direct, arithmetic and bit functions, that are directly connected with 32 general purpose registers.

6. ATmega128 Block Diagram

Following figure shows the block diagram of ATmega128.

• ATmega128 comes with six software selectable power saving modes. The Power-down is very helpful for freezing the Oscillator and stops all other module functions while keeping the register contents saved. The functions remain disabled until the next interrupt is called and executed.
• Similarly, the Idle mode allows the interrupt system, SPI Port, SRAM, Timers/Counter to function while keeping the CPU disabled.
• The ADC Noise Reduction mode plays a vital role in minimizing the switching noise and freezes entire module except asynchronous ADC and Timers.
• In the Power-save mode, the entire device is sleeping except asynchronous timer which continues to run.
• The Standby mode puts the whole device in sleep mode except Crystal Oscialltor which continues to run, helping to consume low power. The Extended Standby mode allows both the Oscillator and the Asynchronous Timer to run while the rest of the device sleeps.

ATmega128 Applications

• Embedded systems
• Industrial Automation
• Students Projects
• Making of quadcopters
• Home automation

That's all for today. I hope I have given you everything you needed to know about ATmega128. If you are unsure or have any question, you can approach me in the comment section below. I'll try and help you according to the best of my knowledge. Feel free to keep us updated with your valuable suggestions, so we keep providing quality work and you keep visiting us every now and then. Thanks for reading the article.

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Introduction to ATmega8

Hi Friends! Hope you are doing well. I am back to give you a daily dose of useful information so you can excel and improve as per your technical needs and requirements. Today, I'll uncover the details on the Introduction to ATmega8. It is an 8-bit AVR microcontroller that is based on RISC CMOS technology and comes with a 28-pin interface for the PDIP package. The Program memory is 8K Flash while RAM and EEPROM are 1K and 512 bytes respectively.

Microchip has been the main source for producing PIC and AVR microcontrollers that are mainly used in embedded and industrial automation systems. These modules can perform a number of functions on a tiny chip, preventing you from spending too much and purchasing external components for laying out automation in the relevant project.

In this post, I’ll cover each and everything related to this tiny chip including main features, pinout, pin description, functions, the compiler used and everything you need to know. Let’s get down to the details of this onboard module:

Introduction to ATmega8

• ATmega8 is a 28-pin, 8-bit AVR microcontroller, based on RISC architecture, designed by Microchip and is mainly used in the embedded systems and industrial automation projects.
• It comes in three packages known as PDIP, MLF, and TQFP, where the first one contains 28 pins and the other two come with 32-pin on each module.
• The Program memory(Flash Memory) is 8KB used to store the programming code and permanent settings.
• Atmega8 comes with a RAM memory of 1KB, it's a volatile memory and refreshes on restart.
• It also has an EEPROM memory of 512 bytes, which is a semi-volatile memory.
• Other features includes are a power-up timer, a watchdog timer, Brown out Detection, In-Circuit Serial Programming and five sleep modes.

• The instruction set is the main criteria that set this module apart from the PIC microcontroller where the former executes most instructions in one clock cycle and comes with 32 general-purpose registers while later requires a number of clock cycles per instruction and comes with W register.
• The 10-bit ADC module is added to the device that plays a vital role for sensor interfacing and contains a total of 6 channels for the PDIP package and 8 channels for the remaining two packages.
• Communication protocols like SPI, I2C, and USART are added to the device that is widely used for establishing communication with external devices.

ATmega8 Key Features

• Before you start working on the relevant project, it is advised to check the features of the module, in order to get an idea if these features are suitable for the project you aim to work on.
• The following table shows the main features of ATmega8.

Atmega8 Key Features
No. of Pins	28
CPU	8-Bit AVR
Operating Voltage	2.7 to 5.5 V
Program Memory	8K
Program Memory Type	Flash
RAM	1K Bytes
EEPROM	512 Bytes
ADC Number of ADC Channels	10-Bit 6 in PDIP, 8 in TQFP and QFN
Comparator	1
PWM Channels	3
Oscillator	up to 16 MHz
Timer (3)	16-Bit Timer (1) 8-Bit Timer (2)
Packages (3)	PDIP (28-Pins) TQFP (32-Pins) QFN (32)
Power Up Timer	Yes
I/O Pins	23
Manufacturer	Microchip
SPI	Yes
I2C	Yes
Watchdog Timer	Yes
Brownout Detection (BOD)	Yes
USART	Yes
Sleep Modes	5
Minimum Operating Temperature	-55 C
Maximum Operating Temperature	125 C

ATmega8 Pinout and Description

• You have got a brief introduction to the module. In this section, we will cover the pinout and description of each pin.

Pinout

• The following figure shows the pinout of ATmega8.

• ATmega8 comes in three packages known as PDIP, MLF, and TQFP where the first is used for prototype projects, while the other two are used for industrial and electronic devices.
• The following table shows the complete description of each pinout, which will help you anticipate the major function associated with each pin.

Atmega8 pinout & Description
1	PC6 RESET PCINT14	I/O Pin RESET will be generated by keeping this pin LOW for longer than the minimum pulse length Interrupt
2	PD0 RXD PCINT16	I/O Pin Serial Receive Pin (USART) Interrupt
3	PD1 TXD PCINT17	I/O Pin Serial Transmit Pin (USART)Interrupt
4	PD2 INT0 PCINT18	I/O Pin External Interrupt Interrupt
5	PD3 INT1 OC2B PCINT19	I/O Pin External Interrupt Dedicated Pin for Timer (PWM Channel) Interrupt
6	PD4 T0 XCK PCINT20	I/O Pin T0 ( Timer0 External Counter Input) XCK ( USART External Clock I/O) Interrupt
7	VCC	Voltage Supply
8	GND	Ground Pin
9	PB6 OSC1 XTAL1 PCINT6	I/O Pin Oscillator Input Pin Interrupt
10	PB7 OSC2 XTAL2 PCINT7	I/O Pin Oscillator Output Pin Interrupt
11	PD5 T1 OC0B PCINT21	I/O Pin PinT1 ( Timer0 External Counter Input) Dedicated Pin for Timer (PWM Channel) Interrupt
12	PD6 AIN0 OC0A PCINT22	I/O PinAnalog Comparator Positive Dedicated Pin for Timer (PWM Channel) Interrupt
13	PD7 AIN1 PCINT23	I/O Pin Analog Comparator Negative Interrupt
14	PB0 ICP1 CLKO PCINT0	I/O Pin In Circuit Serial Programming Clock Interrupt
15	PB1 OC1A PCINT1	I/O Pin Dedicated Pin for Timer (PWM Channel) Interrupt
16	PB2 SS OC1B PCINT2	I/O Pin SPI Slave Select Input. When the controller acts as a slave, this pin is LOW Dedicated Pin for Timer (PWM Channel) Interrupt
17	PB3 MOSI OC2A PCINT3	I/O Pin MOSI (Master Output Slave Input) for SPI Communication. The data is received by this pin when the controller acts as a slave Dedicated Pin for Timer Interrupt
18	PB4 MISO PCINT4	I/O Pin MISO (Master Input Slave Output) for SPI communication. When the controller acts as a slave, the data is sent by a controller to master through this pin Interrupt
19	PB5 SCK PCINT5	I/O Pin SCK (SPI Bus Serial Clock). This clock is shared between the controller and other devices for data transfer Interrupt
20	AVCC	Voltage Supply Pin for ADC
21	AREF	Voltage Reference
22	GND	Ground Pin
23	PC0 ADC0 PCINT8	I/O Pin Analog Channel 0 Interrupt
24	PC1 ADC1 PCINT9	I/O Pin Analog Channel 1 Interrupt
25	PC2 ADC2 PCINT10	I/O Pin Analog Channel 2 Interrupt
26	PC3 ADC3 PCINT11	I/O Pin Analog Channel 3 Interrupt
27	PC4 ADC4 SDA PCINT12	I/O Pin Analog Channel 4 Serial Data (I2C) Interrupt
28	PC5 ADC5 SCL PCINT13	I/O Pin Analog Channel 5 Serial Clock (I2C) Interrupt

ATmega8 Main Functions

• ATmega8 comes with the ability to execute and perform a number of functions.
• Following are the major functions related to this tiny module.

Timer

Atmega8 incorporates three timers where two are 8-bit and one is a 16-bit timer.  These timers can be used both ways i.e. timer as well as a counter where the former is used to create the delay in any running function, controls the internal functions of the controller and increments the instruction cycle, while later is used to count the number of intervals by incrementing the rising and falling edge of the pin and is mainly used for external functions. Apart from these timers, two other timers are included in the device named as

• Oscillator Start-up Timers
• Power Up Timer

An oscillator start-up timer is used to make the crystal oscillator stable by resetting the controller. And power-up timer generates a minor delay once you power on the device, helping in stabilizing the power in order to generate power signals with continuous intervals.

Number of Sleep Modes

Five Sleep Modes are incorporated into the device that helps in saving power. These modes include:

• Power-save
• Power-down
• Idle
• ADC Noise Reduction
• Standby

Brown Out Detect (BOD)

The BOD, also known as BOR (Brown Out Reset), is used to resetting the module once the Vcc (voltage supply) goes below a brownout threshold voltage. It is important to note that, the Power Up Timer must be enabled for creating a delay and helping in bringing back the device from a BOD function. In this mode, multiple voltage ranges are created to protect the module once the power drops at the voltage supply line.

SPI Communication

ATmega8 comes with a serial peripheral interface (SPI) - A communication module that helps in establishing communication between the microcontroller and other peripheral devices such as shift registers, SD cards, and sensors. It incorporates a separate clock and data lines with the addition of a select line for selecting the relevant device for communication.

Two pins used for SPI communication are as follow:

• MOSI (Master Output Slave Input)
• MISO (Master Input Slave Output)

The MOSI pin receives the data when the controller acts as a slave. And MISO plays a vital role in sending data by the controller while later is put in the slave mode.

Watchdog Timer

ATmega8 incorporates a built-in watchdog timer that resets the controller if the running program hangs up during compilation or gets stuck in the infinite loop. The watchdog timer is nothing but a countdown timer.

Interrupt

The interrupt hints at a call of emergency that puts the main function on hold until the required instruction is executed. The controller goes to the main program once the interrupt is called and executed.

I2C Communication

• I2C protocol is used to connect low-speed devices like ADC and DAC converters, and microcontrollers.
• It is a two-wire communication that comes with:
  • Serial Clock (SCL)
  • Serial Data (SDA)

The former is a clock signal that synchronizes the data transfer between the devices and is produced by the master device, while the latter is used to carry the required data.

ATmega8 Memory Interface

The memory space in the controller is the manifestation of the linear and regular memory map. This AVR module comes with a Harvard Architecture that houses separate memories for both data and program.

• Single pipelining is used for the executions of the instructions in the Program Memory - A programmable Flash Memory - where the next instruction is called and executed followed by the next instruction that helps in executing the instructions in every clock cycle.

The Fast Access File Register comes with 32 x 8 - Bit general purpose working registers that can be accessed with the single clock cycle that assists in performing the ALU (Arithmetic Logic Unit) operation where the result is stored in the Register File.

The I/O Memory can be accessed in multiple ways by direct manner or using data Space locations covering Register File, 0x20 – 0x5F.

Program Memory (ROM)

• Program memory comes with a memory space around 8K and can perform the instructions in every clock cycle.
• It stores information permanently and doesn't depend on the source of power supply and is widely known as ROM or Non-Volatile Memory.
• The program memory address can access 16 or 32-bit instruction.
• Program Flash is divided into two parts including the Application Program section and the Boot Program section.
• The latter comes with Applications Flash Memory used for SPM instruction writing.

Data Memory (RAM)

The data memory comes with memory space around 1K (1024 bytes). It can be accessed through the five different addressing modes in the AVR architecture named Direct, Indirect, Indirect with Displacement, Indirect with Pre-decrement, and Indirect with Post-increment.

• Three address registers X, Y, and Z are capable to increment and decrement with regular intervals in the presence of indirect addressing modes.

The flexible interrupt module houses control registers that further contain global interrupt enable bit sitting in the Status Register. All these interrupts contain Interrupt Vector Table with Interrupt Vector where the former depends on the Interrupt Vector Position and are inversely proportional to each other.

• The ALU module, which is divided into three major functions known as direct, arithmetic and bit functions, has a direct connection with 32 general-purpose registers within a single clock cycle.

ATmega8 Compilers

If you are new to a microcontroller, you may be a little skeptical about the compiler you can use for writing and compiling the code into your AVR controller. I've combined some of the basic compilers where some are better than others in terms of efficiency. Although the free versions may lack some features, they are recommended to start with as a newbie to get hands-on experience with the AVR controller.

• The IAR compiler proves to be the best compiler for AVR. Although it is expensive and incorporates a highly professional interface.
• The GCC Port is a good option for AVR that works with both Linux and Windows. The interface is a little bit complex.
• ImageCraft is another right option to start with, but it lacks some GUI features like editor and project management that may create trouble during the execution of code.
• CodeVision comes with CodeWizard and is highly economical.

6. ATmega8 Interfacing with Arduino

ATmega8 can be interfaced with Arduino for the development of the embedded project. The following figure shows the interfacing of ATmega8 with Arduino.

• If you are new to the Arduino Board, you must try these Arduino Projects for Beginners, they will help understand the major functions of the Arduino Board.

ATmega8 Internal Block Diagram

• A Block diagram will help you get a hold of how major functions and components are connected and perform inside the device.
• The following figure shows the block diagram of ATmega8:

• ATmega8 is a low-power CMOS AVR microcontroller that is mainly based on RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega8 is capable to perform and execute powerful instructions using 1MIPS per MHz in a single clock cycle that drastically helps in optimizing the power consumption.

8. ATmega8 Projects and Applications

• Used in embedded and robotics system
• It is widely used in students projects
• Home Security System
• For the designing of quadcopters
• Industrial Automation

That's all for today. I hope you have found this article information. If you are unsure or have any questions, you can approach me in the comment section below. I'd love to help you the best way I can. Feel free to feed us with your valuable suggestions - they help us provide you quality work. Thanks for reading the article.

Which Engineering Field Should You Pick? Mystery Unlocked

Hi Friends! Hope you are doing well. Today, I will highlight and discuss the details on Which Engineering Field Should You Pick? Mystery Unlocked. If your parents are traditional and orthodox in nature, you are left out with only two options picking as a career i.e. Engineer or Doctor. Former is related to math while later involves the comprehensive study of human biology. In this post we cover we cover the best engineering field for you? Or Engineering is for you anyway? There are lots of question coming around and making your mind confused when you pass out your high school and are on the verge of selecting engineering field as a career. With that being said, picking the right type of engineering is not a one night process, it starts right in your school days when you are studying and taking part in regular activities. That is the right time to start figuring out and keenly observe the parameters that intrigue and provoke you as a student and the things that you love doing without getting bored. Engineering is not for everyone. Protip: If you are interested in arts, don't fall a prey to society or parent's pressure that you need to pick engineering anyway. If you hate science and math, there is no point in wasting four years in the field that you hate or have no interest in it at all. Engineering field or any direct relation with math seem quite daunting for some students and they go into the sheer trauma when they hear the word "Maths" I don't know I'm favoring engineering or scaring the hell out of you by pointing out the negatives of engineering field. Anyway back to the main topic. Engineering field is quite vast and covers almost every aspect of human life including, biomedical, space, transportation, infrastructure development, electrical power, communication, automotive etc.

Which Engineering Field Should You Pick? Mystery Unlocked

Following are some main engineering field you can pick based on your nature and field of interest.

Computer Engineering

This is an emerging field that has made our lives easy and hassle-free more than ever before. The inception of Windows in 1995 took the technology by storm by providing easy layout and design where people with no prior knowledge or skills can get a hands-on experience with the learning process of a computer. Computer technology involves both hardware and software used in systems. If playing around with computers incite you anyway and you find it tempting to spend most of your time on a computer, then you can make your feet wet with this field. Danger: Software engineering involves some complex algorithm related to programming that can be very inundated and formidable for you. Before you pick this engineering field, make sure you have some basic knowledge about the programming language used in this field like C, C++, Assembly, Java, HTML, PHP. No prior knowledge about some terms used in software can create trouble in the future and put your whole career on shaky grounds.

Mechanical Engineering

Mechanical engineering is the mother of all engineering. This field covers knowledge about mechanical products, hydraulics, stress measurement, thermodynamics, and everything that involves driving force that requires minimum input and delivers maximum output. Point to Remember. This field is quite rough, boring and requires field work where you need to work with heavy machines all day long. If you don't come with problem-solving ability, then you can find this field quite intimidating. Also, you need to be physically tough to play with and fix the machines. Yes, there are some females who join this field, but after completing graduation, they don't like to continue this field as a career and look for alternatives and end up joining marketing department in the company. Still, it doesn't mean girls are not allowed to pick this field. If they are love to deal with heavy machines, they can opt this field. I can't help pointing out one thing - If you are a female and aim to join this field, you will be only three or four girls in the whole class of scary boys (yes boys look scary when there 40 students in the class and only 4 of them are girls where every boy remains in a continues struggle figuring out how many boys are reserved for each girl :P)

Aeronautical Engineering

This engineering deals with aircraft. If you have a sense of playing with airplane and love getting knowledge about the design, development, and manufacturing of aircraft, then you are advised to pick this field as a career. With every day passing, people love to opt for the airplane as a source of transportation. And this field requires more engineers to handle, fix and maintain the quality of air jets.

Electrical Engineering

This engineering deals with the applications of electrical power. There is a drastic danger involved playing with electrical power especially when your circuits involve high voltage rating as they come with a higher chance of getting short circuit if proper care is not employed during the development these circuits. If you intend to pick this field you need to develop electrical circuits every now and then where you require PCB circuit to connect different components on the board. There are many service provider available in the market. You can not pick the low-quality PCB and put your whole project at risk. PCBWay is the best service provider that provide boards with thick copper that suit and stand fit for your technical requirements where traces are well aligned and connected with each other, setting you fear from the fear of losing connection that can put your project in a total stall. Note: Including these mentioned fields, there are many other fields like chemical engineering, civil engineering, mechatronics engineering, transportation engineering etc. Before you pick any field, make sure the designing principle and work requirement of that particular field is quite in line with your nature and you don't feel bored if you need to work for hours. That's all for today. I hope you have found this article useful. If you are unsure or have any question, you can ask me in the comment section below. I'd love to guide you picking the right field for you as a career. Thanks for reading the article.

Fahrenheit to Kelvin Converter

[vc_row][vc_column width="1/6"][ultimate_spacer height="50"][vc_raw_js]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[/vc_raw_js][/vc_column][vc_column width="2/3"][vc_raw_html]JTNDaWZyYW1lJTIwc3R5bGUlM0QlMjJoZWlnaHQlM0ElMjA3MjBweCUzQiUyMHdpZHRoJTNBJTIwMTAwJTI1JTNCJTIwYm9yZGVyJTNBJTIwbm9uZSUzQiUyMiUyMHNyYyUzRCUyMmh0dHBzJTNBJTJGJTJGd3d3LnRoZWVuZ2luZWVyaW5ncHJvamVjdHMuY29tJTJGRW5naW5lZXJpbmdUb29scyUyRkZhaHJlbmhlaXR0b0tlbHZpbkNvbnZlcnRlciUyRkZhaHJlbmhlaXR0b0tlbHZpbkNvbnZlcnRlcjIucGhwJTIyJTNFJTNDJTJGaWZyYW1lJTNF[/vc_raw_html][/vc_column][vc_column width="1/6"][ultimate_spacer height="50"][vc_column_text][/vc_column_text][vc_column_text][/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]Hi Friends! Hope you are doing well. The calculator mentioned above shows the Fahrenheit to Kelvin Converter. Simply, put the required value in Kelvin on the box given above that will consequently convert it to Kelvin.

Fahrenheit to Kelvin Converter

We need to convert from Fahrenheit to Kelvin every now and then based on the technical needs and requirements of our work.

Formula Used

Following is used to convert from Fahrenheit to Kelvin scale. K = 5/9 (°F - 32) + 273 The temperature in Kelvin is equal to Fahrenheit minus 32 times 5/9, plus 273.

Example

Convert 270 F to Fahrenheit Just put the value in the given formula K = 5/9 (°F - 32) + 273 as F = 270 So, K = 5/9 (270 - 32) + 273 = 405.3

Table for Common Values

Following table shows some common values used in Fahrenheit to Kelvin converter.  

Fahrenheit Temperature

Fahrenheit can be defined as per the nature of water where it freezes at 32 F and boils at 212 F. Fahrenheit is a scale named after German physicist Daniel Gabriel Fahrenheit who proposed this scale in 1724. He did an experiment on ice-salt mixture, concluding 30 F as the freezing point of water, while the normal body temperature was around 90 F.  

• Nevertheless, these values were not accurate, which made him perform a further experiment to propose the actual value, terming 32 ºF as the freezing point of water and body temperature around 96 ºF. Later, the value of body temperature adjusted, finalizing 98 ºF as the normal body temperature.

Kelvin Temperature

Kelvin is a thermodynamic temperature scale that is mainly based on Absolute Zero. It is denoted by K without any degree sign, unlike Celsius and Fahrenheit scale that come with degree sign on them. The degree sign was omitted to indicate the absolute value on the Kelvin scale while other two scales encompass some arbitrary values in temperature.

• The Kelvin scale is named after physicist Baron Kelvin who mainly proposed the need of “absolute thermodynamic scale.
• The absolute zero is equal to 0 K or – 459.67 F that is defined as a point where all thermal motions seize to flow.

Both Fahrenheit and Kelvin scales come show freezing and boiling points of the water where water freezes at 32 ºF =273.15 K and boils at 212 ºF = 373.15 K 

• Initially, the Kelvin scale was written with a degree sign that made people confuse it with the Rankine scale. In 1968, the degree sign was removed to lay out the explicit different between Kelvin and Rankine scale.

It is important to note that, these temperature scales don't share a common point and some offset is required to be added in the start to make them equal. Also, once some offset is added at the start, both Fahrenheit and Kelvin don't increment with a regular interval, instead show some arbitrary behavior on the scales. That's all for today. I have given you everything you need to convert Fahrenheit to Kelvin. If you are unsure or have any question, you can ask me in the comment section below. I'd love to help you according to the best of my knowledge. Feel free to share your feedback and suggestion, they help us provide you quality work as per your needs and requirements so you keep coming back for what we have to offer. Thanks for reading the article.   [/vc_column_text][/vc_column][/vc_row]

Kelvin to Fahrenheit Converter

[vc_row][vc_column width="1/6"][ultimate_spacer height="50"][vc_raw_js]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[/vc_raw_js][/vc_column][vc_column width="2/3"][vc_raw_html]JTNDaWZyYW1lJTIwc3R5bGUlM0QlMjJoZWlnaHQlM0ElMjA3MjBweCUzQiUyMHdpZHRoJTNBJTIwMTAwJTI1JTNCJTIwYm9yZGVyJTNBJTIwbm9uZSUzQiUyMiUyMHNyYyUzRCUyMmh0dHBzJTNBJTJGJTJGd3d3LnRoZWVuZ2luZWVyaW5ncHJvamVjdHMuY29tJTJGRW5naW5lZXJpbmdUb29scyUyRktlbHZpbnRvRmFocmVuaGVpdENvbnZlcnRlciUyRktlbHZpbnRvRmFocmVuaGVpdENvbnZlcnRlci5waHAlMjIlM0UlM0MlMkZpZnJhbWUlM0U=[/vc_raw_html][/vc_column][vc_column width="1/6"][ultimate_spacer height="50"][vc_column_text][/vc_column_text][vc_column_text][/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]Hi Friends! Converting temperature from one scale to another is now just one click away. The table given above shows the calculator for Kelvin to Fahrenheit converter. Just put the required values in the table that will convert it to Fahrenheit in one go.

Kelvin to Fahrenheit Converter

Kelvin and Fahrenheit are the two scales widely used for temperature measurement. Before you convert any value from one scale to another, you must know the formula behind converting that values.

Formula Used

Following formula is used to convert Kelvin into Fahrenheit scale. ºF = K x 9/5 - 459.67 The temperature in Fahrenheit is equal to Kelvin times 9/5 minus 459.67.

Example

Convert 230 K to Fahrenheit Just put the value in the given formula

ºF = K x 9/5 - 459.67

as K = 300

So, ºF = 230 x 9/5 -459.67 = -45.67

Table for Common Values

Following table shows some common values used in Kelvin to Fahrenheit converter.

Kelvin Temperature

Kelvin is a thermodynamic temperature scale, based on Absolute Zero – the temperature at which all thermal motion stops to flow. It is denoted by K and is not written in terms of degree sign unlike other two scales Fahrenheit and Celsius that are widely written with a degree sign. The value of absolute zero is - 0 K or - 459.67 F The freezing and boiling point of water can be expressed in Kelvin and Fahrenheit scale and are described with the following values.

Freezing Point of Water = 273.15 K = 32 ºF

Boiling Point of Water = 373.15 K = 212 ºF

• The Kelvin scale is named after physicist Baron Kelvin who pointed out the need of “absolute thermodynamic scale.

The Kelvin scale was written with degree sign before 1968, that made people skeptical where there were unable to find the difference between Rankine and Kelvin scale and most of them considered K with degree sign as a Rankine Scale.

• In order to remove any confusion, the degree sign was omitted in 1968. Additionally, degree sign indicates the arbitrary value as in case of Celsius and Fahrenheit, while K value truly paints the absolute value.

Fahrenheit Temperature

Fahrenheit can be defined as a temperature at which water freezes at 32 F and boils at 212 F, indicating boiling and freezing point values are equally separated by 180 points. Fahrenheit and Kelvin are somehow related to each other with some offset value. The point worth mentioning here is that all these values are calculated and measured at sea level with standard atmospheric pressure. Origin Fahrenheit is a term named after German physicist Daniel Gabriel Fahrenheit who introduced this scale in 1724. He proposed the scale based on the ice-salt mixture, defining 30 F as the freezing point of water, while the normal body temperature was around 90 F.  These were based on the initial experiment, that came with some flaws, and failed to predict the actual freezing point of water and body temperature. However, once these terms came to sheer limelight and started using as a fixed reference for a thermometer, these values were adjusted, stating 32 ºF as the freezing point of water and 98 ºF as the normal body temperature. That's all for today. I hope you have found this article informative. If you are unsure or have any question, you can ask me in the comment section below. I'd love to help you in any way I can. Thanks for reading the article. [/vc_column_text][/vc_column][/vc_row]

Celsius to Kelvin Converter

[vc_row][vc_column width="1/6"][ultimate_spacer height="50"][vc_raw_js]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[/vc_raw_js][/vc_column][vc_column width="2/3"][vc_raw_html]JTNDaWZyYW1lJTIwc3R5bGUlM0QlMjJoZWlnaHQlM0ElMjA3MjBweCUzQiUyMHdpZHRoJTNBJTIwMTAwJTI1JTNCJTIwYm9yZGVyJTNBJTIwbm9uZSUzQiUyMiUyMHNyYyUzRCUyMmh0dHBzJTNBJTJGJTJGd3d3LnRoZWVuZ2luZWVyaW5ncHJvamVjdHMuY29tJTJGRW5naW5lZXJpbmdUb29scyUyRkNlbHNpdXN0b0tlbHZpbkNvbnZlcnRlciUyRkNlbHNpdXN0b0tlbHZpbkNvbnZlcnRlci5waHAlMjIlM0UlM0MlMkZpZnJhbWUlM0U=[/vc_raw_html][/vc_column][vc_column width="1/6"][ultimate_spacer height="50"][vc_column_text][/vc_column_text][vc_column_text][/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]Hey Guys! Welcome you onboard. The table mentioned above shows the instant conversion from Celsius to Kelvin temperature. You can put any value in Celsius unit and get Kelvin value in return.

Celsius to Kelvin Converter

Both, Celsius and Kelvin are the units widely used for temperature. They don't show a common sharing point and start with an offset value around 273.15. However, once the starting points of both the Kelvin scale and Celsius scales are reserved for the freezing point of water, they are equally separated and incremented with the same number.

Formula Used

Following is the formula used for Celcius to Kelvin conversion.

K = ºC +273.15

The K stands for Kelvin while C stands for Celsius.

Example:

What is the value of 50 C in Kelvin? Simply put the values in the formula

K = ºC+273.15

As given value C = 50,

K = 50+273.15 = 323.15

Table for Common Values

Following table shows some common values converted from Celsius to Kelvin.  

• Note: Exact value of triple point of water is 0.01 C, 273.16K or 32.02 F.

Celsius Temperature

The Celsius, denoted by C, is an SI unit of temperature that is defined in terms of Kelvin where -273.15 Celsius is equal to the 0 K - commonly known as the Absolute zero. This is a new definition of the Celsius scale that was coined in 1954. Before that, Celsius scale was based and referred to the boiling and freezing point of water where Zero Celsius termed as the freezing point while 100 Celcius was termed as the boiling point of water.

• The Celsius unit was named after Swedish Astronomer Anders Celsius. Before referring this scale as Celsius in 1948, it was widely recognized as centigrade which is a Latin word where centum means 100 and gradus means steps.

Kelvin Temperature

Kelvin, denoted by K, is a thermodynamic temperature scale, based on Absolute Zero - the temperature at which all thermal motion stops to flow. The Kelvin scale is not written in terms of degree while other two scales Fahrenheit and Celsius are written with a degree sign. The Kelvin scale is named after physicist Baron Kelvin who proposed a need of "absolute thermodynamic scale.

• Until 1968 the Kelvin was widely written as the degree Kelvin ºK which had created the confusion as some people interpreted it as Rankins Scale. Also, the degree sign indicates the arbitrary value that is appropriate for Celsius and Fahrenheit and is not suitable for defining Kelvin as it predicts the absolute value.

Defining temperatures in both Celsius and Kelvin is a common practice while creating content related to science and technology i.e. the temperature intervals are expressed in Kelvin scales and absolute temperatures are shown in the Celsius scale. The degree Celsius is nothing but a special name for Kelvin used for relative temperature. Similarly, Kelvin is, more or less, indicates the magnitude of degree Celsius. That's all for today. I hope you have found this post informative as per your needs and requirements. Feel free to keep us updated with your feedback and suggestions so we keep producing valuable content and you keep coming back for what we have to offer. Thanks for visiting this page. [/vc_column_text][/vc_column][/vc_row]

Celsius to Fahrenheit Converter

[vc_row][vc_column width="1/6"][ultimate_spacer height="50"][vc_raw_js]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[/vc_raw_js][/vc_column][vc_column width="2/3"][vc_raw_html]JTNDaWZyYW1lJTIwc3R5bGUlM0QlMjJoZWlnaHQlM0ElMjA3MjBweCUzQiUyMHdpZHRoJTNBJTIwMTAwJTI1JTNCJTIwYm9yZGVyJTNBJTIwbm9uZSUzQiUyMiUyMHNyYyUzRCUyMmh0dHBzJTNBJTJGJTJGd3d3LnRoZWVuZ2luZWVyaW5ncHJvamVjdHMuY29tJTJGRW5naW5lZXJpbmdUb29scyUyRkNlbHNpdXN0b0ZhaHJlbmhlaXRDb252ZXJ0ZXIlMkZDZWxzaXVzdG9GYWhyZW5oZWl0Q29udmVydGVyLnBocCUyMiUzRSUzQyUyRmlmcmFtZSUzRQ==[/vc_raw_html][/vc_column][vc_column width="1/6"][ultimate_spacer height="50"][vc_column_text][/vc_column_text][vc_column_text][/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]Hi Fellas! Hope you are doing well. The table shown above is a Celsius to Fahrenheit Converter. As you put any Celsius value in the table, it will swiftly convert it to Fahrenheit.

Celsius to Fahrenheit Converter

Celsius and Fahrenheit are closely related to each other and need conversion while displaying temperature intervals of any experiment or the magnitude of temperature.

Formula for Conversion

Following formula is used to convert relate Celsius to Fahrenheit.

ºC = 5/9 x (ºF-32)

ºF = 9/5 ºC + 32

Example Convert 30 Celsius to Fahrenheit. Just put the values in the formula

ºF = 9/5 ºC + 32

As given ºC = 30, put this value in the formula above

ºF = 9/5 x 30 + 32 = 86

So, 30 ºC will be equal to 86 ºF

Table for Some Basic Values

Follow table shows the conversion for some common values of Celsius.

Why Convert?

These temperature scales don't share a common point. They require some offset to be added in the start to make them equal. Unlike Kelvin and Celsius that once are reserved for water freezing point, share a regular increment in values, Fahrenheit and Celsius don't increment with regular intervals where Fahrenheit is distributed with 180 (32 -212) points from water freezing to boiling point while Celsius goes from 0 to 100.

Celsius Temperature

The Celsius temperature can be defined in terms of Kelvin temperature where 0 Kelvin is equal to -273.15 Celsius – the point mostly known as Absolute Zero. 

• Celsius is a temperature scale introduced by Swedish Astronomer Anders Celsius in 1742. Until 1948, this scale was termed as Centigrade, which is a Latin word divided into two parts where centum means 100 and gradus means steps, after that, it was named after the Astronomer.

Uppsala University’s Olof Beckman stated “Celsius should be recognized as the first to perform and publish careful experiments aiming at the definition of an international temperature scale on scientific grounds,” Celsius is the SI unit of temperature and is also defined as per the boiling and freezing point of water where water freezes at 0 C and boils at 100 C.

• 0 ºC = 32 F  ºFreezing point of water

The freezing and boiling point of water are separated by 180 points in the Fahrenheit scale.

• 100 ºC = 212 ºF Boiling Point of water

Fahrenheit Temperature

Fahrenheit is a temperature scale defined as a temperature at which water freezes at 32 F and boils at 212 F, measured at sea level with standard atmospheric pressure. History Fahrenheit is a temperature scale introduced by German physicist Daniel Gabriel Fahrenheit in 1724. He performed the experiment on ice-salt mixture and came with the conclusion that water was frozen at 30 F and normal body temperature was supposed to be 90 F. However, the idea was turned down by him after performing a couple of experiments and proposed new values for water freezing point as 32 ºF, modifying body temperature as 96 ºF.

• This temperature scale was widely used as a fixed reference for a thermometer which furthered to rescale the value for body temperature, terming 98 ºF as the normal body temperature.

That's all for today. I hope you have found this post useful and informative. In case, you are feeling skeptical or have any question, you can ask me in the comment section below. I'd love to help you according to the best of my expertise. Thanks for visiting this post. [/vc_column_text][/vc_column][/vc_row]

Fahrenheit to Celsius Converter

[vc_row][vc_column width="1/6"][ultimate_spacer height="100"][vc_raw_js]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[/vc_raw_js][/vc_column][vc_column width="2/3"][vc_raw_html]JTNDaWZyYW1lJTIwc3R5bGUlM0QlMjJoZWlnaHQlM0ElMjA3NDBweCUzQiUyMHdpZHRoJTNBJTIwMTAwJTI1JTNCJTIwYm9yZGVyJTNBJTIwbm9uZSUzQiUyMiUyMHNyYyUzRCUyMmh0dHBzJTNBJTJGJTJGd3d3LnRoZWVuZ2luZWVyaW5ncHJvamVjdHMuY29tJTJGRW5naW5lZXJpbmdUb29scyUyRkZhaHJlbmhlaXR0b0NlbHNpdXNDb252ZXJ0ZXIlMkZGYWhyZW5oZWl0dG9DZWxzaXVzQ29udmVydGVyLnBocCUyMiUzRSUzQyUyRmlmcmFtZSUzRQ==[/vc_raw_html][/vc_column][vc_column width="1/6"][ultimate_spacer height="50"][vc_column_text][/vc_column_text][vc_column_text][/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]Hi Friends! Hope you are doing well. The above table shows Fahrenheit to Celsius Converter where you can put any value in Fahrenheit that will consequently convert it to Celsius.

Fahrenheit to Celsius Conversion

Both Fahrenheit and Celsius are termed as units of temperature used as per technical needs and requirements.

Formula used for Conversion

Following formula relate Fahrenheit and Celsius.

C = 5/9 x (F-32)

F = 9/5 C + 32

Example: Convert 90 Fahrenheit to Celsius Just put the values in the formula

C = 5/9 x (F - 32)

As given 90, put this value in the formula above

C = 5/9 x (90 -32) = 32.2

So, 90 F will be equal to 32 C

Table for Some Basic Values

Follow table shows the basic conversion of some common values mainly used in studies.

Why We need Conversion?

The concept of these two units widely used for temperature can be easily apprehended by the concept of Oranges and Apples. Both come with different composition and taste but fall under the same category......Fruits. Similarly, both temperature scales are somehow related to the freezing and boiling point of waters. But their inception was something different from the basis they are used by now. Fahrenheit is widely used for the measuring of body temperature while Celsius is closely related to defining the nature of water. These temperature units don't use a common share point and require some offset to be added in the given value before making them applicable for any experiment.

• Most of the countries have abandoned the usage of Fahrenheit scale and switched to Celsius except America - that is still relying on Fahrenheit scale.

Fahrenheit Temperature

Fahrenheit, denoted by F, is defined as a temperature at which water freezes at 32 F and boils at 212 F. These boiling and freezing point values are equally separated by 180 points. Fahrenheit and Celsius are closely related and, more often than not, are defined in relation with each other where zero Celsius is equal to 32 F. It is important to note that, all these values are measured and calculated at sea level with standard atmospheric pressure. History Fahrenheit is a term coined by German physicist Daniel Gabriel Fahrenheit in 1724. He proposed the scale based on the ice-salt mixture where he defined 30 F as the freezing point of water, terming 90 F as the body temperature. Later, he found, based on a couple of experiment, the freezing point of water is 32 F while the body temperature is 96 F. When the freezing and boiling point came to limelight as a fixed reference for a thermometer, these values were modified, terming 98 F as the normal body temperature of the human body.

Celsius Temperature

The Celsius temperature, denoted by ºC, is defined in terms of Kelvin temperature where -273.15 Celsius is equal to 0 Kelvin - the point mostly known as Absolute Zero.  Celsius was the term introduced by Swedish Astronomer Anders Celsius in 1742.

• Uppsala University's Olof Beckman alleged "Celsius should be recognized as the first to perform and publish careful experiments aiming at the definition of an international temperature scale on scientific grounds,"

Celsius is the SI unit of temperature and is widely replaced Fahrenheit in most of the cases. It is also defined as the temperature at which water freezes at 0 C and boils at 100 C.

• 0 ºC = 273.15 K  Freezing point of water

Once this threshold, is set for the freezing point of water, the next 100 points in Celsius scale are equal to values in Kelvin.

• 100 ºC = 373.15 K Boiling Point of water

That's all for today. I hope you have found this Fahrenheit to Celsius Converter useful. If you are unsure or have any question you can ask me in the comment section below. I'd love to help you in any way I can. Thanks for reading the article. [/vc_column_text][/vc_column][/vc_row]

Introduction to ATmega168

Hi Friends! Hope you are doing well. We always strive to give you valuable information as per your needs and requirements so you keep coming back for what we have to offer. Today, I'll uncover the details on the Introduction to ATmega168. It is an 8-bit AVR microcontroller that comes with 32-pin interface and is mainly based on RISC CMOS technology. The Program memory is 16K, based on Flash, and incorporates read-write capabilities. The module comes with a wide temperature range from -40 to 85 ºC while operating voltage ranges from 1.8 to 5.5 V. If you are working on project that is related to automation and embedded systems, you can not write off the importance of this module that comes with an ability of performing a number of functions at once on a single chip. In this post, I'll cover each and everything related to this module including main features, pinout, pin description, functions, the compiler used and real-time applications. Let's jump right it, and get down to the nitty-gritty of this little toy.

Introduction to ATmega168

• ATmega168 is an 8-bit AVR microcontroller that comes in three packages named as PDIP, MLF, and TQFP, where the first two contain 28 pins on each module while other comes with 32-pin interface.
• The Program memory is 16K that is based on Flash while other two memories RAM and EEPROM contain 1K and 512 Bytes respectively with data retention capability of around 20 years.
• The 10-bit ADC module is added in the device that plays a vital role for sensor interfacing and contains total 8 channels that are enough to provide analog to digital conversion to a number of pins.
• Only a few controllers incorporate all three communication protocols i.e. SPI, I2C and USART and ATmega168 is one of them. These protocols are widely used for setting up a communication with external devices.

• Apart from providing decent pace for executing a number of instructions, other features this module includes a watchdog timer, power up timer, oscillator start-up timer, Brown out Detection and In-Circuit Serial Programming.
• What Makes this AVR module Different from PIC Microcontrollers is the instruction set. PIC microcontrollers require a number of clock cycles per instruction while AVR executes most instructions in one clock cycle. Also, PIC contains a 'W' register, while AVR comes with 32 general purpose registers where three pairs can be employed as pointers.

1. ATmega168 Features

Features of any device are very important to get a hold of major functions and characteristics associated with it. Following table shows the main features of this module.

ATmega168 Features
No. of Pins	28
CPU	RISC 8-Bit CMOS
Operating Voltage	1.8 to 5.5 V
Program Memory	16K
Program Memory Type	Flash
RAM	1K
EEPROM	512 Bytes
ADC Number of ADC Channels	10-Bit 8
Comparator	1
In-circuit serial programming	Yes
Oscillator	up to 20 MHz
Timer (3)	16-Bit Timer (1) 8-Bit Timer (2)
Capture/Compare/PWM	1/1/6
Power Up Timer	Yes
I/O Pins	23
USART	Yes
SPI	2
I2C	Yes
Watchdog Timer	Yes
Brown out Detection (BOD)	Yes
Power on Reset	Yes
Data Retention	20 Years
Minimum Operating Temperature	-40 ºC
Maximum Operating Temperature	85 ºC

2. ATmega168 Pinout and Description

In this section, we will cover the pinout and pin description of each pin of the controller so you can anticipate the main functions associated with the pins. The following figure shows the pinout of ATmega168.

• ATmega168 comes in three packages named as PDIP, MLF, and TQFP where first is used for the development of individual projects while the other two are added to the industrial and electronic devices.

Pin Description

Following table shows the pin description of each pin that will help you foresee the major functions associated with each pin of the controller.

Pin#	Pin Name	Pin Description
1	PC6 RESET PCINT14	Digital I/O Pin RESET will be generated by keeping this pin LOW for longer than the minimum pulse length Interrupt
2	PD0 RXD PCINT16	Digital I/O Pin Serial Receive Pin (USART) Interrupt
3	PD1 TXD PCINT17	Digital I/O Pin Serial Transmit Pin (USART) Interrupt
4	PD2 INT0 PCINT18	Digital I/O Pin External Interrupt Interrupt
5	PD3 INT1 OC2B PCINT19	Digital I/O Pin External Interrupt Dedicated Pin for Timer (PWM Channel) Interrupt
6	PD4 T0 XCK PCINT20	Digital I/O Pin T0 ( Timer0 External Counter Input) XCK ( USART External Clock I/O) Interrupt
7	VCC	Voltage Supply
8	GND	Ground Pin
9	PB6 OSC1 XTAL1 PCINT6	Digital I/O Pin Oscillator Input Pin Interrupt
10	PB7 OSC2 XTAL2 PCINT7	Digital I/O Pin Oscillator Output Pin Interrupt
11	PD5 T1 OC0B PCINT21	Digital I/O Pin T1 ( Timer0 External Counter Input) Dedicated Pin for Timer (PWM Channel) Interrupt
12	PD6 AIN0 OC0A PCINT22	Digital I/O Pin Analog Comparator Positive Dedicated Pin for Timer (PWM Channel) Interrupt
13	PD7 AIN1 PCINT23	Digital I/O Pin Analog Comparator Negative Interrupt
14	PB0 ICP1 CLKO PCINT0	Digital I/O Pin In Circuit Serial Programming Clock Interrupt
15	PB1 OC1A PCINT1	Digital I/O Pin Dedicated Pin for Timer (PWM Channel) Interrupt
16	PB2 SS OC1B PCINT2	Digital I/O Pin SPI Slave Select Input. When the controller acts as a slave, this pin is LOW Dedicated Pin for Timer (PWM Channel) Interrupt
17	PB3 MOSI OC2A PCINT3	Digital I/O Pin MOSI (Master Output Slave Input) for SPI Communication. The data is received by this pin when the controller acts as a slave Dedicated Pin for Timer Interrupt
18	PB4 MISO PCINT4	Digital I/O Pin MISO (Master Input Slave Output) for SPI communication. When the controller acts as a slave, the data is sent by a controller to master through this pin Interrupt
19	PB5 SCK PCINT5	Digital I/O Pin SCK (SPI Bus Serial Clock). This clock is shared between the controller and other devices for data transfer Interrupt
20	AVCC	Voltage Supply Pin for ADC
21	AREF	Voltage Reference
22	GND	Ground Pin
23	PC0 ADC0 PCINT8	Digital I/O Pin Analog Channel 0 Interrupt
24	PC1 ADC1 PCINT9	Digital I/O Pin Analog Channel 1 Interrupt
25	PC2 ADC2 PCINT10	Digital I/O Pin Analog Channel 2 Interrupt
26	PC3 ADC3 PCINT11	Digital I/O Pin Analog Channel 3 Interrupt
27	PC4 ADC4 SDA PCINT12	Digital I/O Pin Analog Channel 4 Serial Data (I2C) Interrupt
28	PC5 ADC5 SCL PCINT13	Digital I/O Pin Analog Channel 5 Serial Clock (I2C) Interrupt

3. ATmega168 Main Functions

ATmega168 comes with an ability to execute and perform a number of functions. Following are the major functions related to this tiny module.

Timer

Atmega168 comes with three timers where two are 8-bit and one a 16-bit timer.  These timers can be used as a timer as well as a counter. The timer mode is used to create the dealy in any running function that increments the instruction cycle and mainly controls the internal functions of the controller. While the counter mode counts the number of intervals in any function and is mainly used for external functions where it can increment the rising and falling edge of the pin.

• Oscillator Start-up Timers
• Power Up Timer

Oscillator start-up timer resets the controller until the crystal oscillator becomes stable. Similarly, power-up timer is added that generates a minor delay once you power on the device, that provides an appropriate time to stabilize the power where it can generate power signals in a continuous manner.

Brown Out Detect (BOD)

The BOD, also known as BOR (Brown Out Reset), is a very valuable function that resets the module once the Vcc (voltage supply) goes below a brownout threshold voltage. In this mode, multiple voltage ranges are used and generated to protect the module once the power drops at the voltage supply line, setting you free from manually resetting the device. The Power Up Timer must be enabled, that creates the delay in bringing back the device from a BOD function.

Number of Sleep Modes

Six Sleep Modes are added to the device that help in saving power. These modes include:

• Idle
• ADC Noise Reduction
• Power-save
• Power-down
• Standby
• Extended Standby

SPI Communication

ATmega168 incorporates a serial peripheral interface (SPI) that nails down a communication between the microcontroller and other peripheral devices such as SD cards, shift registers, and sensors. It comes with separate clock and data lines with the addition of a select line to select the given device for communication. Two pins called used for SPI communication are as follow MOSI (Master Output Slave Input) MISO (Master Input Slave Output) The data is received by MOSI pin when the controller acts as a slave. And MISO is responsible for sending data by the controller when later acts as a slave.

Interrupt

The interrupt is used for a call of emergency which puts the main function on hold and executes the required instructions essential at that time. Once the interrupt is called and executed the running instruction brings the controller back to the main program.

I2C Communication

I2C protocol is a two-wire protocol used to connect low-speed devices like ADC and DAC converters, and microcontrollers. It comes with two wires called Serial Clock (SCL) Serial Data (SDA)  The former behaves like a clock signal that is produced by the master device and synchronizes the data transfer between the devices. And the later is used to carry the desired data.

Watchdog Timer

ATmega168 comes with a built-in watchdog timer that brings the controller back in reset position if the program hangs up during compilation or gets stuck in the infinite loop. The watchdog timer acts like a countdown timer in the running function.

4. ATmega168 Memory Interface

This AVR controller encompasses the Harvard Architecture that provides separate memory locations for both Data and Program memory. The memory is based on Atmel’s high-density technology where Program Memory, also known as Flash memory, can be reprogrammed through SPI serial interface using two ways i.e. Non-volatile memory programmer or On-chip boot code. The CPU is very useful to access memories and perform calculations on the basis of the number of instructions fed into the controller.

Program Memory (ROM)

Program memory performs the instructions in every clock cycle at regular intervals. It is also known as ROM or non-volatile memory that stores the information permanently and works perfectly in the absence of power supply.

• The controller program memory executes the required instruction followed by the next instruction. Every program memory address is able to access a 16- or 32-bit instruction.

Program memory comes with a memory space around 16K - lot more than some other controllers available in the AVR community.

• Program Flash is mainly categorized into two sections i.e. Application Program section and the Boot Program section. Lock bits are reserved for read/write protection. The Boot Program Section houses Application Flash Memory that is responsible for SPM instruction writing.

Data Memory (RAM)

The data memory contains 1K (1024 bytes) memory space. It categorizes the memory locations three ways where first 32 locations access the file register, next 64 locations are allocated for standard I/O memory and remaining are employed for internal data SRAM. The data memory is categorized into five addressing modes known as

• Direct,
• Indirect
• Indirect with Displacement
• Indirect with Pre-decrement
• Indirect with Post-increment

The memory space in the controller shows the linear and regular memory map. The address registers X, Y, and Z can increment and decrement with regular intervals when indirect addressing modes are coupled with both pre-decrement and post-increment. It is important to note that, the I/O Memory can be accessed in two ways i.e. using data Space locations covering Register File, 0x20 - 0x5F or in a direct manner.

5. ATmega168 Compilers

Compilers are used for writing and compiling the code in the AVR microcontroller. Following are some compilers you can use for this AVR module.

• The IAR is the best compiler for AVR. It is expensive and incorporates highly professional interface. If you are a beginner, it is advised to use this compiler as per your technical needs and requirements.
• CodeVision is cheap and easy to use that incorporates CodeWizard.
• The GCC Port is another compiler for AVR. It is available FREE for both Linux and Windows operating systems. It comes with little bit complex interface that may put you in trouble right off the bat.
• ImageCraft is a valuable option but it lacks some GUI features where editor and project management are quite formidable and can create trouble for the code execution.

6. ATmega168 Interfacing with Arduino

ATmega168 can be interfaced with Arduino to drive automation in the relevant project. Both modules work perfectly in embedded systems where they can perform a number of useful functions. The following figure shows the pinout how Arduino pins are connected with ATmega168.

• If you aim to work on this Arduino board then you must try these Arduino Projects for Beginners, they will help to get familiar with the Arduino Board.

7. ATmega168 Block Diagram

If you intend to closely look into the device and how major functions and components are connected and performed inside the device, a block diagram will help you out. The following figure shows the block diagram of ATmega168.

• AVCC is a voltage supply for analog to digital converter that is necessary to power up the ADC module. Power on reset and brown out detect house in the same package that is also connected with the watchdog timer.

8. ATmega168 Projects and Applications

• It is widely used in students projects
• Used in embedded and robotics system
• Industrial Automation
• Home Security System
• For the designing of quadcopters

That's all for today. I hope you have found this article useful. If you are feeling skeptical or have any question, you can approach me in the comment section below. I'd love to help you in any way I can according to the best of my expertise. Feel free to keep us updated with your valuable suggestion, they help us provide you quality work as per your needs and demands. Thanks for reading the article.