name: HT99C411C function: Cordless Phone Controller package: CERDIP window28,28 manufacturer: Holtek +--()--+ PB5 | 1 28| PB6 PB4 | 2 27| PB7 PA3 | 3 26| PA4 PA2 | 4 25| PA5 PA1 | 5 24| PA6 PA0 | 6 23| PA7 PB1 | 7 22| OSC2 PB0 | 8 21| OSC1 VSS | 9 20| VDD INTB |10 19| RESB TMR0 |11 18| PD2 NC |12 17| PD1 NC |13 16| PD0 NC |14 15| AOUT +------+ This pinout came from the Chipdir: http://www.chipdir.org/