＊Frequency
Stability:±5PPM over
**0°C~**5°C: ＊Built-in *2.**8 KHz
crystal unit DTCXO(temperature compensated crystal oscillator) ＊Interface Type:I2C-Bus
Interface(**0KHz) ＊Calendar,alarm,timer(sec./min./hour/day/week/month/year),vaild
up to year ***9 ＊Operating voltage
range:2.2V~5.5V ＊Wide Timekeeper voltage
range:2.4V~5.5V ＊Allow chip environmental
working temperature measured by o time software test,typical
accuracy ±1°C ＊Operating temperature
range:**0°C~**5°C
