51 MCU burner uses USB to TTL (CH340)
Burner type This article mainly describes the use of burner based on CH340
Precondition: CH340 driver needs to be installed on the computer.
Driver download address: http://www.wch.cn/download/CH341SER_EXE.html
Burning software: You can use Puzhong automatic download software, or you can download STC-ISP burning Software
Automatically download software in this lecture
Select the serial number you just remembered for the serial port number. The chip type depends on your own chip. You can try one by one among STC89Cxx (New) and STC89Cxx Series in the chip type option.
Note: Different from the Puzhong development board box, the cold start method should be selected when downloading, that is: first turn off the power, click the download button, and then turn on the power immediately.
Line connection:
The VCC and 3V3 of the burner can be connected by jumper caps, or a wire without jumper caps.
5V is connected to the VCC of the power input port of the single-chip microcomputer, and GND is connected to the GND of the power input port of the single-chip microcomputer. Cold download, causing download failure) The
programmer TXD is connected to the MCU RXD, and the programmer RXD is connected to the MCU TXD.
This download can be successful
Attachment: CH340 driver installation failed or pre-installation succeeded (also failed) for details, please refer to http://prechin.net/forum.php?mod=viewthread&tid=39586&extra=page%3D1
After the installation is successful, but it still can’t be used or the serial port number cannot be detected, please check whether Bluetooth is turned off. Both may occupy a serial port and cause failure
