The AT29C257-20JC is a 256Kb parallel NOR FLASH IC from Microchip, featuring an access time of 200ns and a maximum access time of 20ns. It operates within a temperature range of 0°C to 70°C and is supplied with a voltage of 5V. The device is packaged in a PLCC and is designed for surface mount applications.
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| Access Time | 200ns |
| Access Time-Max | 20ns |
| Address Bus Width | 15b |
| Package/Case | PLCC |
| Density | 256Kb |
| Frequency | 200GHz |
| Interface | Parallel |
| Lead Free | Contains Lead |
| Max Operating Temperature | 70°C |
| Min Operating Temperature | 0°C |
| Max Supply Voltage | 5.5V |
| Memory Size | 256Kb |
| Memory Type | FLASH, , Non-Volatile, NOR |
| Min Supply Voltage | 4.5V |
| Mount | Surface Mount |
| Number of Words | 32000 |
| Operating Supply Voltage | 5V |
| Package Quantity | 32 |
| Packaging | Rail/Tube |
| RoHS Compliant | No |
| Supply Current | 50mA |
| Sync/Async | Asynchronous |
| Word Size | 8b |
| RoHS | Not Compliant |
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