| RAM： | - |
| Interface： | I2C |
| Vcc(V)： | 1.8~5.5 |
| Alarm Output： | √ |
| Programmable Square Wave Output Frequency(Hz)： | 1,4.096k,8.192k,32.768k |
| Automatically Switches To back-up Battery： | - |
| Package/Temperature(℃)： | MSOP-8/-40~85 |
| Description： | I2C RTC,external 32.768kHz crystal |