| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | DP8571 |  361Kb/24P | Timer Clock Peripheral (TCP) |
| DP8571A |  361Kb/24P | Timer Clock Peripheral (TCP) |
| DP8571AN |  361Kb/24P | Timer Clock Peripheral (TCP) |
 National Semiconductor ... | DP8570 |  381Kb/ 26P | Timer Clock Peripheral (TCP) |
| DP8570A |  381Kb/ 26P | Timer Clock Peripheral (TCP) |
 National Semiconductor ... | DP8570AN |  381Kb/ 26P | Timer Clock Peripheral (TCP) |
 National Semiconductor ... | DP8570AV |  381Kb/ 26P | Timer Clock Peripheral (TCP) |
 National Semiconductor ... | DP8571A |  361Kb/ 24P | Timer Clock Peripheral (TCP) |
| DP8571AN |  361Kb/ 24P | Timer Clock Peripheral (TCP) |