Datasheet

PIC18F2420/2520/4420/4520

APPENDIX A: REVISION HISTORY

Revision A (June 2004)

Original data sheet for PIC18F2420/2520/4420/4520

devices.

Revision B (January 2007)

This revision includes updates to the packaging

diagrams.

APPENDIX B: DEVICE

DIFFERENCES

The differences between the devices listed in this data

sheet are shown in Table B-1.

TABLE B-1: DEVICE DIFFERENCES

Features PIC18F2420 PIC18F2520 PIC18F4420 PIC18F4520

Program Memory (Bytes)

16384 32768 16384 32768

Program Memory (Instructions) 8192 16384 8192 16384

Interrupt Sources 19 19 20 20

I/O Ports Ports A, B, C, (E) Ports A, B, C, (E) Ports A, B, C, D, E Ports A, B, C, D, E

Capture/Compare/PWM Modules 2 2 1 1

Enhanced

Capture/Compare/PWM Modules

00 1 1

Parallel Communications (PSP) No No Yes Yes

10-bit Analog-to-Digital Module 10 input channels 10 input channels 13 input channels 13 input channels

Packages 28-pin PDIP

28-pin SOIC

28-pin QFN

28-pin PDIP

28-pin SOIC

28-pin QFN

40-pin PDIP

44-pin TQFP

44-pin QFN

40-pin PDIP

44-pin TQFP

44-pin QFN