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CMS69P22 Datasheet(PDF) 34 Page - List of Unclassifed Manufacturers

Part # CMS69P22
Description  CMS69P22, 8-bit OTP-CMS69P22 Special Two-in-one Induction Cooker MCU / DIP-20 package
PDF  128 Pages
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Manufacturer  ETC1 [List of Unclassifed Manufacturers]
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CMS69P22 Datasheet(HTML) 34 Page - List of Unclassifed Manufacturers

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中微股份
CMS69P22
www.mcu.com.cn
- 29 -
内部试用版
4.5.4
稳压二极管复位电路
稳压二极管复位电路是一种简单的 LVR 电路，基本上可以解决掉电复位问题。如上图电路中，利用稳压
管的击穿电压作为电路复位检测值，当 VDD 高于“Vz + 0.7V”时，三极管集电极输出高电平，单片机正常
工作；当 VDD 低于“Vz + 0.7V”时，三极管集电极输出低电平，单片机复位。稳压管规格不同则电路复位
检测值不同，根据电路的要求选 择合适的二极管。
注：上述外部复位电路中，R2 电阻不能取消，以提高 REST 口的抗 EMC 及 ESD 能力。
VZ
R2
1K
R3
10K
VSS
VDD
VSS
REST
VDD
R1
MCU
R4
10K
Q1



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