name: HT99C810_DIP40 function: Cordless Phone Controller package: DIP40,40 manufacturer: Holtek +--()--+ PB5 | 1 40| PB6 PB4 | 2 39| PB7 PA3 | 3 38| PA4 PA2 | 4 37| PA5 PA1 | 5 36| PA6 PA0 | 6 35| PA7 PB3 | 7 34| OSC2 PB2 | 8 33| OSC1 PB1 | 9 32| VDD PB0 |10 31| AVDD PD7 |11 30| RESB PD6 |12 29| TMR1 PD5 |13 28| PD3 PD4 |14 27| PD2 VSS |15 26| NC AVSS |16 25| PD1 INTB |17 24| PD0 TMR0 |18 23| AOUT PG0 |19 22| PG3 PG1 |20 21| PG2 +------+ This pinout came from the Chipdir: http://www.chipdir.org/ name: HT99C810_SSOP48 function: Cordless Phone Controller package: SSOP48,48 manufacturer: Holtek +--()--+ PG7 | 1 48| PB4 PG6 | 2 47| PB5 PG5 | 3 46| PB6 PG4 | 4 45| PB7 PA3 | 5 44| PA4 PA2 | 6 43| PA5 PA1 | 7 42| PA6 PA0 | 8 41| PA7 PB3 | 9 40| OSC2 PB2 |10 39| OSC1 PB1 |11 38| PF5 PB0 |12 37| PF6 PD7 |13 36| PF7 PD6 |14 35| VDD PD5 |15 34| AVDD PD4 |16 33| RESB VSS |17 32| TMR1 AVSS |18 31| PD3 INTB |19 30| PD2 TMR0 |20 29| NC PG0 |21 28| NC PG1 |22 27| PD1 PG2 |23 26| PD0 PG3 |24 25| AOUT +------+ This pinout came from the Chipdir: http://www.chipdir.org/