WCH‑Link Emulator Download Debugger
📌 Product Overview WCH‑Link is a multifunctional download and debugging emulator designed for WCH microcontrollers, which supports QinHeng RISC‑V and ARM core chips. This debugger integrates SWD download function and TTL serial port debugging function, equipped with transparent protective casing, and provides 5V / 3.3V dual power output for the target board. It has two versions of USB‑A and Type‑C interface, compact and portable, and supports firmware upgrade. It is widely used in program downloading, online debugging and serial log viewing of MCU development projects.
✨ Core Features
- Compatible with QinHeng RISC‑V and ARM core microcontrollers.
- Support dual power supply output: 5V and 3.3V for target board power supply.
- Two optional USB versions: USB‑A interface and Type‑C interface.
- Integrate SWD download interface and TTL serial port, serial port supports multiple baud rates for debugging message output.
- Clear transparent protective shell, small size, anti‑drop protection for internal circuit board.
- Support offline firmware upgrade, just short the ISP solder points to complete USB upgrade operation.
📋 Pin Definition
- 5V: Power supply pin for target MCU 5V
- 3V3: Power supply pin for target MCU 3.3V
- GND: Common ground connection with target board
- SWCLK: SWD clock pin for downloading and debugging
- SWDIO: SWD data pin for downloading and debugging
- RX: UART receive pin, connect to target board UART‑TX
- TX: UART transmit pin, connect to target board UART‑RX
📐 Dimension Info ‑ Type‑C version: 59 X 23 X 18mm, Net weight:15.01g ‑ USB‑A version: 59 X 23 X 18mm, Net weight:16.64g Manual measurement with an allowable error of 1‑3mm.
⚠ Important Usage Notice
- Confirm the power voltage of the target chip before power output to avoid chip burnout.
- Correctly match the TX and RX pins between debugger and the main control board.
- Short the ISP pads only when upgrading the device firmware.
🛠 Application Scenarios ‑ Program download and online debugging for WCH RISC‑V / ARM MCU ‑ Serial port log printing and hardware debugging in embedded development ‑ Student electronic DIY project, prototype verification of single‑chip microcomputer ‑ Industrial control equipment firmware development and maintenance