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| Part Number | 93C66A-E/SN | 93C66A-I/SN | 93C66B-E/SN | 93C66AT-E/SN | 93C66C-E/SN | 93C66A-E/ST | 93C66T-E/SN | 93C76A-E/SN | 93C56A-E/SN | 93C66-E/SN |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| Memory Type | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile |
| Memory Format | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM |
| Technology | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM |
| Memory Size | 4Kb (512 x 8) | 4Kb (512 x 8) | 4Kb (256 x 16) | 4Kb (512 x 8) | 4Kb (512 x 8, 256 x 16) | 4Kb (512 x 8) | 4Kb (512 x 8, 256 x 16) | 8Kb (1K x 8) | 2Kb (256 x 8) | 4Kb (512 x 8, 256 x 16) |
| Memory Interface | SPI | SPI | SPI | SPI | SPI | SPI | SPI | SPI | SPI | SPI |
| Clock Frequency | 2 MHz | 2 MHz | 2 MHz | 2 MHz | 3 MHz | 2 MHz | 2 MHz | 3 MHz | 2 MHz | 2 MHz |
| Write Cycle Time - Word, Page | 2ms | 2ms | 2ms | 2ms | 2ms | 2ms | 2ms | 2ms | 2ms | 2ms |
| Access Time | - | - | - | - | - | - | - | - | - | - |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-TSSOP (0.173", 4.40mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-TSSOP | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
