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EPROM
27256 256K (32kb x 8) 250ns NMOS EPROM Datasheet
Photograph
Product Details
Features
- Standard Type with UV Erasable Window
- Reconditioned Unit, Erased and Ready to Program
- Access Time 250ns
- Limited Stock Available - End of Life Product
Pin Layout
Pin Description
| Pin Number | Description |
|---|---|
| 1 | Vpp - Programming Supply |
| 2 | A12 - Address Input |
| 3 | A7 - Address Input |
| 4 | A6 - Address Input |
| 5 | A5 - Address Input |
| 6 | A4 - Address Input |
| 7 | A3 - Address Input |
| 8 | A2 - Address Input |
| 9 | A1 - Address Input |
| 10 | A0 - Address Input |
| 11 | Q0 - Data Input |
| 12 | Q1 - Data Input |
| 13 | Q2 - Data Input |
| 14 | Vss - Ground |
| 15 | Q3 - Data Input |
| 16 | Q4 - Data Input |
| 17 | Q5 - Data Input |
| 18 | Q6 - Data Input |
| 19 | Q7 - Data Input |
| 20 | E - Chip Enable |
| 21 | A10 - Address Input |
| 22 | G - Output Enable |
| 23 | A11 - Address Input |
| 24 | A9 - Address Input |
| 25 | A8 - Address Input |
| 26 | A13 - Address Input |
| 27 | A14 - Address Pin |
| 28 | Vcc - Positive Power Supply |
Dimensional Drawing
Technical Data
