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SH79F166AP044PR Datasheet(PDF) 92 Page - List of Unclassifed Manufacturers

Part # SH79F166AP044PR
Description  Enhanced 8051 microcontroller with 10-bit ADC
PDF  113 Pages
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Manufacturer  ETC1 [List of Unclassifed Manufacturers]
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SH79F166AP044PR Datasheet(HTML) 92 Page - List of Unclassifed Manufacturers

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SH79F166A
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8.8 低电压复位(LVR)
8.8.1 特性
 通过代码选项选择,LVR 设定电压 VLVR 可为 2.1V 或 4.3V
 LVR 去抖动时间 TLVR 为 30-60µs
 当供电电压低于设定电压 VLVR 时,将产生内部复位
低电压复位(LVR)功能是为了监测供电电压,当供电电压低于设定电压VLVR时,MCU将产生内部复位。LVR去抖动时间
TLVR大约为30µs-60µs。
LVR功能打开后,具有以下特性(t表示电压低于设定电压VLVR的时间):
当V
DD ≤ VLVR且t ≥ TLVR时产生系统复位。
当V
DD > VLVR或VDD < VLVR,但t < TLVR时不会产生系统复位。
通过代码选项,可以选择LVR功能的打开与关闭。
在交流电或大容量电池应用中,接通大负载后容易导致MCU供电暂时低于定义的工作电压。低电压复位可以应用于此,保
护系统在低于设定电压下产生有效复位。



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