| IC number | Manufacturer | Documentation |
|---|---|---|
| 8253 | Intel | Not available |
| 8253 | AMD | Not available |
| µPD8253 | NEC | Not available |
| IC number | Package | Speed | CBM part number | CBM part description |
|---|---|---|---|---|
| P8253-5, µPD8253C-5 | 28-pin DIP | 5 MHz | 380202-01 | IC, 8253-5 Timer 5MHz |
| µPD8253C-2 | 28-pin DIP |
| Device | Positions | Package | Speed |
|---|---|---|---|
| A1060 main board | U24 | DIP | 5 MHz |
| PC-10 CPU board | U71 | DIP | 5 MHz |
| PC-10 combined board | U16 | DIP |
| Pin | Type | Name |
|---|---|---|
| 1 | Input | CS_ |
| 2 | Input | WR_ |
| 3 | Input | RD_ |
| 4..11 | I/O | D7..D0 |
| 12..13 | I/O | CAS0..CAS1 |
| 14 | Power | GND |
| 15 | I/O | CAS2 |
| 16 | I/O | SP_/EN_ |
| 17 | Output | INT |
| 18..25 | Input | IR0..IR7 |
| 26 | Input | INTA_ |
| 27 | Input | A0 |
| 28 | Power | VCC |
Copyright © 2004 Ronald van Dijk - All rights reserved
Last update: 20 March 2004