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| Part Number | AT28C040-20FI | AT28C040-20LI | AT28C040-25FI | AT28C040-20FC |
|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete |
| Memory Type | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile |
| Memory Format | EEPROM | EEPROM | EEPROM | EEPROM |
| Technology | EEPROM | EEPROM | EEPROM | EEPROM |
| Memory Size | 4Mb (512K x 8) | 4Mb (512K x 8) | 4Mb (512K x 8) | 4Mb (512K x 8) |
| Memory Interface | Parallel | Parallel | Parallel | Parallel |
| Clock Frequency | - | - | - | - |
| Write Cycle Time - Word, Page | 10ms | 10ms | 10ms | 10ms |
| Access Time | 200 ns | 200 ns | 250 ns | 200 ns |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | 0°C ~ 70°C (TC) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 32-CFlatPack | 44-CLCC | 32-CFlatPack | 32-CFlatPack |
| Supplier Device Package | 32-FlatPack, Ceramic Bottom-Brazed | 44-CLCC (16.55x16.55) | 32-FlatPack, Ceramic Bottom-Brazed | 32-FlatPack, Ceramic Bottom-Brazed |
