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AT89S52 minimum system

Overview

AT89S52 minimum system 1. The minimum system suitable for beginners to learn and understand classic microcontrollers: 2. The reset circuit used this time is power-on and button reset; 3. The most important thing is that you can use the TTL to data line to download the program, without frequently plugging in the microcontroller. , protection pin, convenient for novices, but pay attention to the TXD of the data line connected to RXD, the data line RXD connected to the TXD pin, remember to pull up the 1k resistor when using the P0 port; 4. You must be careful when learning electronics, I have suffered a loss, don’t The power supply was connected backwards, and there was a wisp of smoke; I am also a newbie, and I welcome comments and suggestions from fellow Taoists to learn together! Thanks!

Design Files

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Update:2025-06-19 20:24:44

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