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FM4005 pdf datasheet (Integrat

  • 资源大小:666
  • 上传时间:2021-06-22
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  • 资源积分:1积分
  • 标      签: FM4

资 源 简 介

The FM4005 is an integrated device that includes themost commonly needed funcTIons for processorbasedsystems. Major features include real-TImeclock, low-VDD reset, watchdog TImer, battery-backedevent counter, lockable 64-bit serial number area, andgeneral purpose comparator that can be used for apower-fail (NMI) interrupt or other purpose. Thefamily operates from 2.7 to 5.5V.The real-TIme clock (RTC) provides time and dateinformation in BCD format. It can be permanentlypowered from external backup voltage source, eithera battery or a capacitor. The timekeeper uses acommon external 32.768 kHz crystal and provides acalibration mode that allows software adjustment oftimekeeping accuracy.
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