DEVICE OVERVIEW
This document contains device specific information for the following devices:

• PIC18F2220 • PIC18F4220
• PIC18F2320 • PIC18F4320

This family offers the advantages of all PIC18 microcontrollers – namely, high computational performance at an economical price with the addition of high endurance Enhanced Flash program memory. On top of these features, the PIC18F2220/2320/4220/4320 family introduces design enhancements that make these microcontrollers a logical choice for many high-performance, power sensitive applications.

Low-Power Features:
• Power Managed modes:
   - Run: CPU on, peripherals on
   - Idle: CPU off, peripherals on
   - Sleep: CPU off, peripherals off
• Power Consumption modes:
   - PRI_RUN: 150 µA, 1 MHz, 2V
   - PRI_IDLE: 37 µA, 1 MHz, 2V
   - SEC_RUN: 14 µA, 32 kHz, 2V
   - SEC_IDLE: 5.8 µA, 32 kHz, 2V
   - RC_RUN: 110 µA, 1 MHz, 2V
   - RC_IDLE: 52 µA, 1 MHz, 2V
   - Sleep: 0.1 µA, 1 MHz, 2V
• Timer1 Oscillator: 1.1 µA, 32 kHz, 2V
• Watchdog Timer: 2.1 µA
• Two-Speed Oscillator Start-up

Oscillators:
• Four Crystal modes:
   - LP, XT, HS: up to 25 MHz
   - HSPLL: 4-10 MHz (16-40 MHz internal)
• Two External RC modes, up to 4 MHz
• Two External Clock modes, up to 40 MHz
• Internal oscillator block:
   - 8 user selectable frequencies: 31 kHz, 125 kHz, 250 kHz, 500 kHz, 1 MHz, 2 MHz, 4 MHz, 8 MHz
   - 125 kHz-8 MHz calibrated to 1%
   - Two modes select one or two I/O pins
   - OSCTUNE – Allows user to shift frequency
• Secondary oscillator using Timer1 @ 32 kHz
• Fail-Safe Clock Monitor
   - Allows for safe shutdown if peripheral clock stops
  
Peripheral Highlights:
• High current sink/source 25 mA/25 mA
• Three external interrupts
• Up to 2 Capture/Compare/PWM (CCP) modules:
   - Capture is 16-bit, max. resolution is 6.25 ns (TCY/16)
   - Compare is 16-bit, max. resolution is 100 ns (TCY)
   - PWM output: PWM resolution is 1 to 10-bit
• Enhanced Capture/Compare/PWM (ECCP) module:
   - One, two or four PWM outputs
   - Selectable polarity
   - Programmable dead-time
   - Auto-Shutdown and Auto-Restart
• Compatible 10-bit, up to 13-channel Analog-to-Digital Converter module (A/D) with programmable acquisition time
• Dual analog comparators
• Addressable USART module:
   - RS-232 operation using internal oscillator block (no external crystal required)

Special Microcontroller Features:
• 100,000 erase/write cycle Enhanced Flash program memory typical
• 1,000,000 erase/write cycle Data EEPROM memory typical
• Flash/Data EEPROM Retention: > 40 years
• Self-programmable under software control
• Priority levels for interrupts
• 8 x 8 Single-Cycle Hardware Multiplier
• Extended Watchdog Timer (WDT):
   - Programmable period from 41 ms to 131s
   - 2% stability over VDD and Temperature
• Single-supply 5V In-Circuit Serial Programming™ (ICSP™) via two pins
• In-Circuit Debug (ICD) via two pins
• Wide operating voltage range: 2.0V to 5.5V