name: HT99C820_SOP28 function: Cordless Phone Controller package: SOP28,28 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 PB3 | 7 22| OSC2 PB2 | 8 21| OSC1 PB1 | 9 20| VDD/AVDD PB0 |10 19| RESB PD7 |11 18| PD2 PD6 |12 17| PD1 PD5 |13 16| PD0 VSS/AVSS |14 15| AOUT +------+ This pinout came from the Chipdir: http://www.chipdir.org/ name: HT99C820_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| PF3 INTB |19 30| PF4 TMR0 |20 29| PD3 PG0 |21 28| PD2 PG1 |22 27| PD1 PG2 |23 26| PD0 PG3 |24 25| AOUT +------+ This pinout came from the Chipdir: http://www.chipdir.org/