CH32V003 Minimum System RISC-V Microcontroller Development Board

CH32V003 Minimum System RISC-V Microcontroller Development Board offers developers an ultra-low-cost and highly efficient platform for exploring the open-source RISC-V architecture in embedded projects. This board leverages the powerful CH32V003 series industrial-grade microcontroller from WCH, which integrates a QingKe V2A RISC-V core and achieves an impressive maximum frequency of 48 MHz. Consequently, the CH32V003 provides exceptional performance while maintaining a minimal power footprint. Furthermore, its small form factor and robust feature set—including multiple timers, a high-speed ADC, and abundant GPIOs—make it an ideal solution for mass-produced IoT endpoints and simple control systems. You can use this board to prototype embedded applications quickly and affordably.

Key Features:

• Core Architecture: Features the QingKe V2A RISC-V 32-bit core, providing a modern, open-source instruction set for high efficiency.
• High Operating Frequency: Operates at a maximum clock speed of 48 MHz, delivering significant processing power for embedded tasks.
• Ultra-Low Cost: This board represents one of the most affordable entry points into the RISC-V ecosystem, significantly reducing project budget constraints.
• Industrial Grade Reliability: The onboard CH32V003 chip supports an industrial operating temperature range, ensuring robust performance in diverse environments.
• Rich Peripherals: Integrates a 10-bit Analog-to-Digital Converter (ADC), multiple Timers, and essential communication interfaces like I²C, SPI, and UART.

Technical Specifications:

• CPU Core: QingKe V2A RISC-V 32-bit Microcontroller
• Maximum Frequency: 48 MHz
• Flash Memory: 16 Kbytes
• SRAM: 2 Kbytes
• Supply Voltage: 3.3 V / 5 V DC (Via USB or Pin Headers)
• Number of GPIOs: 17 (Including all multifunction pins)
• ADC Resolution: 10-bit, 1 channel
• Debugging Interface: SWD (Single Wire Debug) via WCH-Link

Mechanical Specifications:

• Package Type: Minimum System Development Board
• Mounting: Pin headers suitable for breadboard or standard 2.54 mm pitch sockets.
• PCB Material: FR-4, with clear silkscreen markings.
• Indicator: One onboard power LED and one user-programmable LED.

Dimensions:

• Board Length: ≈ 40.0 mm
• Board Width: ≈ 16.0 mm
• Pin Pitch: 2.54 mm (Standard breadboard pitch)
• Weight: ≈ 3.5 g (Very lightweight for small prototypes)

Pinout and Wiring:

• Power Pins (VCC/GND): Supply the board with 3.3 V or 5 V DC; these pins power the microcontroller.
• Debug Pins (SWDIO/SWCLK): Connect these pins to a WCH-Link debugger or similar SWD programmer to download and debug code.
• GPIO Pins (e.g., PA1, PC0): Use these general-purpose input/output pins for controlling LEDs, reading sensors, and implementing communication protocols.
• Reset Pin (RST): Drive this pin low momentarily to force a hardware reset of the microcontroller.
• Wiring Tip: Therefore, always ensure your power supply is stable, especially when driving external components from the board’s VCC rail.

Datasheet Reference:

• Download CH32V003 RISC-V Microcontroller Datasheet

Commonly Used in:

• Cost-Sensitive IoT Devices: Providing the brains for smart plugs, basic sensors, and environmental monitors where budget is critical.
• Educational Platforms: Serving as an accessible tool for students and hobbyists learning embedded programming and the RISC-V architecture.
• Rapid Prototyping: Ideal for quickly verifying concepts for simple control loops and peripheral integration.

Applications:

• LED Lighting Control: Driving LED strips and managing basic light patterns.
• Motor and Actuator Control: Implementing open-loop control systems for small DC motors and servos.
• Basic Sensor Reading: Collecting and processing data from simple digital and analog sensors (e.g., temperature, proximity).
• Signal Generation: Creating precise PWM signals for various control and timing purposes.

Equivalent Models:

• STMicroelectronics STM8S003: A similar low-cost, 8-bit microcontroller often used in comparable applications, however, it uses a proprietary core.
• Pico RV2 Development Board: Another minimal RISC-V board, though typically less integrated and potentially higher cost.
• ESP8266 Mini Board (Wired Only): Functionally similar for basic control, but naturally, the ESP8266 focuses on Wi-Fi connectivity.

Package Includes:

• 1 x CH32V003 Minimum System RISC-V Microcontroller Development Board
• 2 x 11-pin Male Header (Unsoldered)