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Three C51 MCU power-on reset delay circuit diagrams

Publisher:温暖的拥抱Latest update time:2014-12-30 Source: 互联网Keywords：C51 Reading articles on mobile phones Scan QR code
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　　The following delayed reset circuits are all formed by using the charging time of an RC branch connected to the RST pin of the microcontroller. The typical reset circuit is shown in Figure (a), where the resistance and capacitance values ​​are provided in the original manual. Figure (b) is a simplified reset circuit, and Figure (c) adds a diode D to Figure (a), which helps the capacitor C to discharge quickly and prepare for the next power-on reset delay. After a series of delays, the microcontroller begins to enter the normal program running state according to the operating frequency of the clock source.

　　

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