CH32V003 QFN USB C Breakout

Project Description

A Breakout Board for the QFN Variant of the CH32V003, with pins broken out for I2C, SPI, UART, USB, and with a USB-C Connector, and an NRST Button.

This Board has been designed with generic and minimal parts, to make the production and assembly of these boards easy and cheap for novices, looking to get into the hobby and/or use the CH32V003 Chips

NOTE: If using the USB Pins for other purposes, please keep in mind that USB_DM and USB_PU are connected togehter with a 1.5K resistor. Remove this if needed

Gallery

Parts List

J2 Generic 16 Pin USB C Connector
J1 3 x 2.54mm (0.1") Pin Header
J3 12 x 2.54mm (0.1") Pin Header
J4 12 x 2.54mm (0.1") Pin Header

R1 0805 1.5K Resistor
R2 0805 5.1K Resistor (Can leave unpopulated, or use 5K - 22K instead)
R3 0805 5.1K Resistor (Can leave unpopulated, or use 5K - 22K instead)

C1 0805 100nF Capacitor
C2 0805 100nF Capacitor
C3 0805 10uF Capacitor (Can leave unpopulated, or use 100nF instead)

SW1 Generic 6mm x 3mm Tactile Button

U1 QFN20 0.4mm Pitch CH32V003
U2 AMS1117 3.3c Voltage Regulator

Pinout

USB

• Pullup PD2
• D- PD3
• D+ PD4

SPI

• SCLK PC5
• MOSI PC6
• MISO PC7

I2C

• SDA PC1
• SCL PC2

UART

• TX PD5
• RX PD6

Dimensions

The PCB is 22mm x 40mm, with 4 x 2.6mm holes in a rectangle pattern; 18mm x 36mm.

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