| Part Number | 25LC040AT-I/OT | 25LC020AT-I/OT | 
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | 
| Category | Memory | Memory | 
|   |   | |
| Product Status | Active | Active | 
| Memory Type | Non-Volatile | Non-Volatile | 
| Memory Format | EEPROM | EEPROM | 
| Technology | EEPROM | EEPROM | 
| Memory Size | 4Kb (512 x 8) | 2Kb (256 x 8) | 
| Memory Interface | SPI | SPI | 
| Clock Frequency | 10 MHz | 10 MHz | 
| Write Cycle Time - Word, Page | 5ms | 5ms | 
| Access Time | - | - | 
| Voltage - Supply | 2.5V ~ 5.5V | 2.5V ~ 5.5V | 
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | SOT-23-6 | SOT-23-6 | 
| Supplier Device Package | SOT-23-6 | SOT-23-6 |