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| Part Number | AT28HC64B-90SU-T | AT28HC64B-90TU-T | AT28HC64B-70SU-T |
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Status | Active | Obsolete | Active |
| Memory Type | Non-Volatile | Non-Volatile | Non-Volatile |
| Memory Format | EEPROM | EEPROM | EEPROM |
| Technology | EEPROM | EEPROM | EEPROM |
| Memory Size | 64Kb (8K x 8) | 64Kb (8K x 8) | 64Kb (8K x 8) |
| Memory Interface | Parallel | Parallel | Parallel |
| Clock Frequency | - | - | - |
| Write Cycle Time - Word, Page | 10ms | 10ms | 10ms |
| Access Time | 90 ns | 90 ns | 70 ns |
| Voltage - Supply | 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) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) | 28-TSSOP (0.465", 11.80mm Width) | 28-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 28-SOIC | 28-TSOP | 28-SOIC |
