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• 寬工作電壓：0.9V-5.5V

• 低休眠電流：0.4uA(3.3V下的典型值)

• I2C通信頻率最高支持400KHz@1.2V-5.5V

• 萬年歷日期2000年-2099年

• 可編程時鐘輸出32768Hz、16384Hz、8192Hz、

  4096Hz、2048Hz、1024Hz、1Hz

• 內部集成振蕩器電容，可配置7pF或者12.5pF

• 內部集成定時器

• 內部集成報警功能

• 內部集成分鐘和半分鐘報警功能

• 內部集成時鐘微調功能

• 支持12小時和24小時切換

• 支持SOP8、TSSOP8、HVSON10等封裝

• Provides year, month, day, weekday, hours, minutes, 

  and seconds based on a 32.768 kHz quartz crystal

• Clock operating voltage: 0.9 V to 5.5 V

• Low current: typical 0.22 ?A at VDD = 3.3 V

  and Tamb = 25 ℃

• 400 kHz two-line I2C-bus interface (at VDD = 1.8 V to 5.5 V)

• Programmable clock output for peripheral devices

  (32.768 kHz, 16.384 kHz,8.192 kHz, 4.096 kHz,

   2.048 kHz, 1.024 kHz, and 1 Hz)

• Selectable integrated oscillator load capacitors

  for CL = 7 pF or CL = 12.5 pF

• Minute and half minute interrupt

• Oscillator stop detection function

• Internal Power-On Reset (POR)

• Programmable offset register for frequency adjustment