PIC18F6520/8520/6620/8620/6720/8720 Data Sheet 64/.
Microchip Technology
PIC18F6520 - Enhanced Flash Microcontrollers
PIC18F6520/8520/6620/8620/6720/8720 Data Sheet 64/80-Pin High-Performance, 256 Kbit to 1 Mbit Enhanced Flash Microcontrollers with A/D 2004 Microch.