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| Part Number | AT25640AN-10SI-2.7 | AT25640N-10SI-2.7 | AT25640AN-10SU-2.7 | 
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | 
| Product Status | Obsolete | Obsolete | Obsolete | 
| 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 | SPI | SPI | SPI | 
| Clock Frequency | 20 MHz | 3 MHz | 20 MHz | 
| Write Cycle Time - Word, Page | 5ms | 5ms | 5ms | 
| Access Time | - | - | - | 
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | 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) | 
| Supplier Device Package | 8-SOIC | 8-SOIC | 8-SOIC |