name: AT89C1051 function: 8-Bit Microntroller package: PDIP/SOIC,20 manufacturer: Atmel added-by: Procopio Villarreal comment: 1Kbyte Flash +--()--+ RST | 1 20| VCC P3.0 | 2 19| P1.7 P3.1 | 3 18| P1.6 XTAL2 | 4 17| P1.5 XTAL1 | 5 16| P1.4 P3.2/INTO | 6 15| P1.3 P3.3/INT1 | 7 14| P1.2 P3.4/T0 | 8 13| P1.1/AIN1 P3.5 | 9 12| P1.0/AIN0 GND |10 11| P3.7 +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/