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| Part Number | AT28C040-20FC |
| Datasheet | AT28C040-20FC datasheet |
| Description | IC EEPROM 4M PARALLEL 32FLATPCK |
| Manufacturer | Microchip Technology |
| Series | - |
| Part Status | Obsolete |
| Memory Type | Non-Volatile |
| Memory Format | EEPROM |
| Technology | EEPROM |
| Memory Size | 4Mb (512K x 8) |
| Clock Frequency | - |
| Write Cycle Time - Word, Page | 10ms |
| Access Time | 200ns |
| Memory Interface | Parallel |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C (TC) |
| Mounting Type | Surface Mount |
| Package / Case | 32-CFlatpack |
| Supplier Device Package | 32-Flatpack, Ceramic Bottom-Brazed |