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| Part Number | AT24CSW020-UUM0B-T | AT24CSW040-UUM0B-T | AT24CSW080-UUM0B-T | AT24CSW010-UUM0B-T | 
|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | 
| Product Status | Active | Active | Active | Active | 
| Memory Type | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | 
| Memory Format | EEPROM | EEPROM | EEPROM | EEPROM | 
| Technology | EEPROM | EEPROM | EEPROM | EEPROM | 
| Memory Size | 2Kb (256 x 8) | 4Kb (512 x 8) | 8Kb (1K x 8) | 1Kb (128 x 8) | 
| Memory Interface | I²C | I²C | I²C | I²C | 
| Clock Frequency | 1 MHz | 1 MHz | 1 MHz | 1 MHz | 
| Write Cycle Time - Word, Page | 5ms | 5ms | 5ms | 5ms | 
| Access Time | 450 ns | 450 ns | 450 ns | 450 ns | 
| Voltage - Supply | 1.7V ~ 3.6V | 1.7V ~ 3.6V | 1.7V ~ 3.6V | 1.7V ~ 3.6V | 
| Operating Temperature | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 4-XFBGA, WLCSP | 4-XFBGA, WLCSP | 4-XFBGA, WLCSP | 4-XFBGA, WLCSP | 
| Supplier Device Package | 4-WLCSP | 4-WLCSP | 4-WLCSP | 4-WLCSP |