CPU
CPUCPU Registers
Registers
GPIOR00x3EGPIOR10x4AGPIOR20x4BSMCR0x53MCUSR0x54MCUCR0x55RAMPZ0x5BEIND0x5CSP0x5DSREG0x5FCLKPR0x61PRR00x64PRR10x65OSCCAL0x66RCCTRL0x67CLKSEL00xC5CLKSEL10xC6CLKSTA0xC7
ATmega16U4 peripherals
Each block of the ATmega16U4: what it is, the registers that control it and the pins it uses.
PORTB
PORTI/O Port
Registers
PORTC
PORTI/O Port
Registers
PORTD
PORTI/O Port
Registers
PORTE
PORTI/O Port
Registers
PORTF
PORTI/O Port
Registers
EXINT
EXINTExternal Interrupts
Registers
Pins
TC0
TC8Timer/Counter, 8-bit
Registers
Pins
TC1
TC16Timer/Counter, 16-bit
Registers
Pins
TC3
TC16Timer/Counter, 16-bit
Registers
Pins
TC4
TC10Timer/Counter, 10-bit
Registers
TIFR40x39TIMSK40x72TCNT40xBETC4H0xBFTCCR4A0xC0TCCR4B0xC1TCCR4C0xC2TCCR4D0xC3TCCR4E0xC4OCR4A0xCFOCR4B0xD0OCR4C0xD1OCR4D0xD2DT40xD4
Pins
USART1
USARTUSART
Registers
Pins
SPI
SPISerial Peripheral Interface
Registers
Pins
TWI
TWITwo Wire Serial Interface
Registers
Pins
ADC
ADCAnalog-to-Digital Converter
Registers
Pins
AC
ACAnalog Comparator
Registers
Pins
EEPROM
EEPROMEEPROM
Registers
WDT
WDTWatchdog Timer
Registers
JTAG
JTAGJTAG Interface
Registers
Pins
PLL
PLLPhase Locked Loop
Registers
USB_DEVICE
USB_DEVICEUSB Device Registers