name: HT48C70_DIP40 function: 8-Bit Microcontroller 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| RESB PD7 |11 30| TMR1 PD6 |12 29| PD3 PD5 |13 28| PD2 PD4 |14 27| PD1 VSS |15 26| PD0 INTB |16 25| PC7 TMR0 |17 24| PC6 PC0 |18 23| PC5 PC1 |19 22| PC4 PC2 |20 21| PC3 +------+ This pinout came from the Chipdir: http://www.chipdir.org/ name: HT48C70_QFP64 function: 8-Bit Microcontroller package: QFP64,64 manufacturer: Holtek +---------+----------+----------+---------+ | 1 - PA1| 17 - PD5 | 33 - PC7 | 49 - PF1| | 2 - PA0| 18 - PD4 | 34 - PD0 | 50 - PF0| | 3 - PE7| 19 - VSS | 35 - PD1 | 51 - PA7| | 4 - PE6| 20 - INTB| 36 - PD2 | 52 - PA6| | 5 - PE5| 21 - TMR0| 37 - PD3 | 53 - PA5| | 6 - PE4| 22 - PG0 | 38 - TMR1| 54 - PA4| | 7 - PB3| 23 - PG1 | 39 - RESB| 55 - PB7| | 8 - PB2| 24 - PG2 | 40 - VDD | 56 - PB6| | 9 - PB1| 25 - PG3 | 41 - PF7 | 57 - PB5| | 10 - PB0| 26 - PC0 | 42 - PF6 | 58 - PB4| | 11 - PE3| 27 - PC1 | 43 - PF5 | 59 - PG7| | 12 - PE2| 28 - PC2 | 44 - PF4 | 60 - PG6| | 13 - PE1| 29 - PC3 | 45 - OSC1| 61 - PG5| | 14 - PE0| 30 - PC4 | 46 - OSC2| 62 - PG4| | 15 - PD7| 31 - PC5 | 47 - PF3 | 63 - PA3| | 16 - PD6| 32 - PC6 | 48 - PF2 | 64 - PA2| +---------+----------+----------+---------+ This pinout came from the Chipdir: http://www.chipdir.org/