name: 68681 function: Dual UART package: DIP40,40 manufacturer: Motorola added-by: Peter Maydell +--()--+ RS1 | 1 40| Vcc IP3 | 2 39| IP4 RS2 | 3 38| IP5 IP1 | 4 37| IP6 RS3 | 5 36| IP2 RS4 | 6 35| /CS IP0 | 7 34| /RESET /W | 8 33| X2 /R | 9 32| X1 / CLK RxD B |10 31| RxD A TxD B |11 30| TxD A OP1 |12 29| OP0 OP3 |13 28| OP2 OP5 |14 27| OP4 OP7 |15 26| OP6 D1 |16 25| D0 D3 |17 24| D2 D5 |18 23| D4 D7 |19 22| D6 GND |20 21| /IRQ +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/