Information

 2009 Microchip Technology Inc. DS80363C-page 5
PIC18F2420/2520/4420/4520
REVISION HISTORY
Rev A Document (1/2008)
Initial release of this document. Includes silicon issues
1 (MSSP), 2 (MSSP – SPI Mode), 3 (Enhanced Univer-
sal Synchronous Receiver Transmitter – EUSART) and
4 (10-Bit Analog-to-Digital Converter).
Rev B Document (
10/2008)
Added silicon issues 5 (MSSP), 6 (Enhanced Capture/
Compare/PWM – ECCP) and 7 (Resets – BOR).
Rev C Document (8/2009)
Added silicon issues 8 (EUSART) and 9 (MSSP).