EEPROM 存储器 IC 1Kb I²C，单线 125 kbps 2-XSFN（5x3.5）
| Parameter Name | Attribute value |
| category | |
| Maker | Microchip |
| series | - |
| Package | tray |
| memory type | non-volatile |
| memory format | EEPROM |
| technology | EEPROM |
| storage | 1Kb |
| memory organization | 128 x 8 |
| memory interface | I²C, single wire |
| Clock frequency | 125 kbps |
| Write cycle time - words, pages | 5ms |
| Voltage - Power supply | 2.7V ~ 4.5V |
| Operating temperature | -40°C ~ 85°C（TC） |
| Installation type | surface mount type |
| Package/casing | 2-SMD, no leads |
| Supplier device packaging | 2-XSFN（5x3.5） |
| Basic product number | AT21CS11 |
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