Information

© 2007 Microchip Technology Inc. DS80288G-page 5
PIC18F2420/2520/4420/4520
REVISION HISTORY
Rev A Document (08/2006)
First revision of this document. Silicon issues 1-2
(MSSP).
Rev B Document (10/2006)
Added silicon issue 3 (Timer1 and Timer3).
Rev C Document (11/2006)
Updated silicon issue 3 (Timer1 and Timer3) and
added silicon issue 4 (ECCP – PWM Mode).
Rev D Document (1/2007)
Added silicon issue 5 (Power-up Timer).
Rev E Document (
4/2007)
Added silicon issue 6 (Enhanced Universal
Synchronous Receiver Transmitter – EUSART).
Rev F Document (6/2007)
Added silicon issue 7 (10-Bit Analog-to-Digital
Converter) and 8 (MSSP – SPI Mode).
Rev G Document (8/2007)
Modified silicon issue 6 (EUSART).