CPU core
Registers
I/O port A
Registers
I/O port B
Registers
I/O port C
Registers
I/O port D
Registers
I/O port E
Registers
I/O port F
Registers
I/O port G
Registers
I/O port H
Registers
I/O port J
Registers
I/O port control
Registers
Analog-to-digital converter
Registers
Pins
Capture/compare/PWM 1
Registers
Capture/compare/PWM 2
Registers
Capture/compare/PWM 3
Registers
Capture/compare/PWM 4
Registers
Capture/compare/PWM 5
Registers
Comparators and voltage reference
Registers
Pins
Enhanced capture/compare/PWM 1
Registers
Enhanced capture/compare/PWM 2
Registers
Enhanced capture/compare/PWM 3
Registers
External memory bus
Registers
USART
Registers
Pins
Interrupts
Registers
Pins
Master synchronous serial port (SPI, I²C)
Registers
Pins
Data EEPROM and flash program memory
Registers
Oscillator, power control and watchdog
Registers
Pins
Peripheral module disable
Registers
Parallel master port
Registers
Timer0
Registers
Timer1
Registers
Timer2
Registers
Timer3
Registers
Timer4
Registers
USB device
Registers
Pins
BETA