{"title":"Adafruit QT Py CH32V203 Dev Board with STEMMA QT","handle":"adafruit-qt-py-ch32v203-dev-board-with-stemma-qt-ada5996","url":"/products/adafruit-qt-py-ch32v203-dev-board-with-stemma-qt-ada5996","description":"The Adafruit QT Py CH32V203 is a tiny development board built around the WCH CH32V203G6 — a low-cost RISC-V microcontroller running at up to 144 MHz. In the compact QT Py form factor (Seeed Xiao compatible), it packs USB-C, a STEMMA QT connector, an RGB NeoPixel, and 10 GPIO pins into a board small enough to embed anywhere.\n\nThe CH32V203G6 features a single 32-bit RISC-V core with 1-cycle multiply/divide, 10 KB SRAM, 32 KB single-cycle flash, and an additional 224 KB of XIP flash for program or data storage. It includes ADC, timers, USB device, UART, I2C, and SPI peripherals. A reset button and bootloader button let you upload code over USB without needing an external SWD programmer.\n\nKey Features\n\n\nCH32V203G6 RISC-V Core – 144 MHz, 32-bit with 1-cycle multiply/divide\n\n32 KB + 224 KB Flash – 32 KB single-cycle flash plus 224 KB XIP flash for program/data\n\n10 KB SRAM – On-chip memory\n\nUSB-C Connector – Native USB device support; upload code over USB\n\nSTEMMA QT / Qwiic Connector – Plug-and-play I2C for sensors and accessories\n\nRGB NeoPixel LED – Built-in addressable LED\n\n10 GPIO Pins – ADC on all pins, plus hardware UART, SPI, and I2C\n\n3.3 V Regulator – AP2112 with 600 mA peak output\n\nReset & Bootloader Buttons – Enter USB ROM bootloader without external programmer\n\nSeeed Xiao Compatible – Same size and pinout with castellated pads for surface mounting\n\nSWD Pads – On the bottom for advanced debugging\n\n\nAlso Consider\n\n\nQT Py RP2040 – Dual-core ARM Cortex-M0+ with CircuitPython support\n\nQT Py ESP32-S2 – Wi-Fi enabled with CircuitPython and Arduino support\n\nQT Py ESP32-S3 – Wi-Fi + BLE with 2 MB PSRAM\n\nQT Py SAMD21 – ARM Cortex-M0+ with full CircuitPython support\n\n\nIdeal For\n\nExploring the RISC-V CH32 ecosystem\nLow-cost USB device projects\nCompact embedded designs with castellated pads\nDevelopers comfortable with Makefiles and command-line toolchains\n\n\n\nWarning: The CH32 series does not support CircuitPython or MicroPython, and Arduino support is very early. This chip is best suited for experienced developers comfortable with Makefiles, git repositories, and manual configuration. It is not recommended for beginners.\n\n\nResources\n\nAdafruit QT Py CH32V203 Learning Guide\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":941,"title":"Default Title","sku":"AF-5996","mpn":"ADA5996","price":7.58,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":61,"option1":"Default Title"}]}