在区域火灾报警控制器中，FM 31256芯片的非易失性数据存储器、实时时钟、看门狗等功能，增强系统可靠性。
The nonvolatile data memory, real-time clock, and watchdog functions of FM31256 chip were adopted by region fire alarm and control device to improve the system reliability.
每个看门狗具有一个可选择的预分频器(从1到64 K)，可用于时钟看门狗定时器也能触发dma请求和捕获比较通道。
Each watchdog has a selectable prescaler (from 1 to 64 k) that can be used to clock the watchdog timers which can also trigger DMA requests and capture compare channels.
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