| IC number | Manufacturer | Documentation |
|---|---|---|
| MPS6551, MCS6551 | MOS Technology / CSG | Not available |
| SY6551 | Synertek | Not available |
| IC number | Package | Speed | CBM part number | CBM part description |
|---|---|---|---|---|
| MCS6551 | 28-pin Ceramic DIP | 1 MHz | 901895-01 | IC, 6551, ACIA |
| MPS6551 | 28-pin Plastic DIP | 1 MHz | ||
| MCS6551A | 28-pin Ceramic DIP | 2 MHz | 901895-02 | 6551A 2 MHz |
| MPS6551A, SYP6551A | 28-pin Plastic DIP | 2 MHz | ||
| MCS6551B | 28-pin Ceramic DIP | 3 MHz | 901895-03 | 6551A |
| MPS6551B | 28-pin Plastic DIP | 3 MHz |
| Device | Positions | Package | Speed |
|---|---|---|---|
| A2232 | U52, U54, U56, U58, U72, U74, U76 | DIP | 2 MHz |
| Plus/4 | U3 | DIP | 2 MHz |
| SuperPET BMB board | U23 | DIP | 1 MHz |
| SuperPET combo board | U40 | DIP | 1 MHz |
| CBM II lo-profile | U15 | DIP | 2 MHz |
| CBM II hi-profile | U7 | DIP | 2 MHz |
| Pin | Type | Name |
|---|---|---|
| 1 | Power | GND |
| 2 | Input | CS0 |
| 3 | Input | _CS1 |
| 4 | Input | _RES |
| 5 | I/O | RxC |
| 6..7 | Input | XTAL1..XTAL2 |
| 8 | Output | _RTS |
| 9 | Input | _CTS |
| 10 | Output | TxD |
| 11 | Output | _DTR |
| 12 | Input | RxD |
| 13..14 | Input | RS0..RS1 |
| 15 | Power | VCC |
| 16 | Input | _DCD |
| 17 | Input | _DSR |
| 18..25 | I/O | DB0..DB7 |
| 26 | Output | _IRQ |
| 27 | Input | ø2 |
| 28 | Input | R/_W |
Copyright © 2003-2004 Ronald van Dijk - All rights reserved
Last update: 10 January 2004