name: MC68HC05J1A function: MCU package: 20 DIP,20 manufacturer: Motorola added-by: comment: 4 MHz 6805-based MCU +--()--+ OSC IN | 1 20| /RESET OSC OUT | 2 19| /IRQ PB5 | 3 18| PA0 PB4 | 4 17| PA1 PB3 | 5 16| PA2 PB2 | 6 15| PA3 PB1 | 7 14| PA4 PB0 | 8 13| PA5 Vdd | 9 12| PA6 Vss |10 11| PA7 +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/