WCH-LinkE

## Introduction The actual
product has been verified and all functions are normal.
This WCH-LinkE is made using CH32V305F6P6 and supports on/off 5V and 3.3V output in WCH-LinkUtility.
Supports ARM JTAG mode. Support CH32V003 debugging.

The board is made using **KiCAD 7.0**, there is no LCEDA free proofing, please note. The attachment below provides the PCB source file WCH-LinkE-PCB.7z.

The minimum line width, line spacing, and hole diameter of this PCB comply with Jialichuang's 2-layer free board-making process, and you can directly use the following Gerber proofing (WCH-LinkE-Gerber.zip).

The components are all packaged in 0603, and all pin and female header packages are 2.54mm pitch. Components can be purchased using the interactive BOM table (WCH-LinkE-ibom) below.
## Supported chips
This is the picture in Qinheng's WCH-LinkUserManual.pdf file
! [image.png] ![image.png]
## Hardware description
WCH-LinkE 1v3 adds a crystal oscillator compared to 1v2, probably for Prepared for switching to WCH-LinkE high-speed JTAG mode.

If you want to switch to high-speed JTAG mode, you need to remove R1 and R7 on the board. And use the WCH tool to program the firmware.

##
The same goes for WCH_LinkE-sch.pdf below the schematic diagram
! [image.png]
## PCB picture
! [IMG_1155.jpg] ![IMG_1156.jpg] The following picture is a group photo of various versions of 1v2 1v3 homemade 1v3 hardware.
![IMG_1157.jpg]
## For how to burn firmware,
please refer to [Link](https://www.wch.cn/downloads/WCH-LinkUserManual_PDF.html)
6. Firmware upgrade method
6.3 WCH-LinkUtility offline update ( Two-line mode offline update)
and then select the 1v3_WCH-LinkE-APP_IAP.bin firmware below (extracted from Mounriver IDEExToolSWDToolFirmware_Link)

and then you can debug normally