PIC18F4221 peripherals

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

Analog-to-digital converter

Registers

Pins

Capture/compare/PWM 1

Registers

Capture/compare/PWM 2

Registers

Comparators and voltage reference

Registers

Pins

Enhanced capture/compare/PWM 1

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

Timer0

Registers

Timer1

Registers

Timer2

Registers

Timer3

Registers