WeAct Studio CH32V203C8T6 RISC-V Low Power Core Demo Board

The WeAct Studio CH32V203C8T6 Demo Board is a compact and powerful development platform based on the QingKe V4B RISC-V processor, designed for high-performance and low-power embedded applications. With a system clock frequency of up to 144MHz, the board provides fast processing performance for a wide range of embedded development, control, automation, and IoT projects.

The board features 20KB SRAM and 64KB Flash memory, providing sufficient resources for program execution and data storage. It operates with a 3.3V supply voltage, while the GPIO unit is independently powered to provide greater flexibility when interfacing with external devices and peripherals.

Designed with power efficiency in mind, the CH32V203C8T6 supports multiple low-power operating modes, including Sleep, Stop, and Standby. Its low power consumption makes it suitable for battery-powered and energy-conscious embedded applications.

The development board also provides a wide range of integrated peripherals, including USB 2.0 Host/Device, UART, CAN, IIC, SPI, DMA, ADC, TouchKey, amplifiers, timers, CRC calculation, and a 2-wire serial debug interface. These features make it a versatile platform for learning, prototyping, and developing advanced RISC-V-based embedded systems.

Features

• Based on the QingKe V4B RISC-V processor
• Maximum system clock frequency up to 144MHz
• 20KB SRAM
• 64KB Flash memory
• 3.3V operating supply
• Independently powered GPIO unit
• Supports Sleep, Stop, and Standby low-power modes
• Ultra-low power consumption
• 18-channel general DMA controllers
• 12-bit ADC with TouchKey support
• 10-channel ADC functionality
• 10-channel TouchKey functionality
• 2 integrated amplifiers
• Multiple hardware timers
• USB 2.0 Host/Device interface
• Multiple UART interfaces
• CAN interface
• IIC interface
• SPI interface
• CRC calculation unit
• 96-bit unique device ID
• Serial 2-wire debug interface
• Power-on/Power-down Reset (POR/PDR)
• Programmable Voltage Detector (PVD)
• Suitable for low-power embedded applications
• Ideal for RISC-V development and prototyping

Specifications

Parameter	Specification
Product Type	RISC-V Low Power Core Demo Board
Processor	QingKe V4B
Architecture	RISC-V
Maximum Clock Frequency	Up to 144MHz
SRAM	20KB
Flash Memory	64KB
Operating Voltage	3.3V
GPIO Supply	Independently Powered
Low-Power Modes	Sleep / Stop / Standby
DMA	18-Channel General DMA
ADC	12-bit ADC
ADC Channels	Up to 10 Channels
TouchKey	10 Channels
Amplifiers	2
USB	USB 2.0 Host/Device
UART	Multiple UART Interfaces
CAN	Supported
IIC	Supported
SPI	Supported
Debug Interface	Serial 2-Wire
Unique ID	96-bit
Reset	POR/PDR
Voltage Detection	Programmable Voltage Detector
CRC	Hardware CRC Calculation

Design and Construction

The WeAct Studio CH32V203C8T6 demo board is designed as a compact development platform for applications requiring a combination of high processing performance, low power consumption, and extensive peripheral connectivity.

The QingKe V4B processor provides a maximum system clock frequency of 144MHz, allowing the board to handle demanding embedded control and data-processing tasks. The 20KB SRAM and 64KB Flash provide memory resources for application programs and runtime data.

The board operates at 3.3V, with an independently powered GPIO unit that provides additional flexibility when connecting external sensors, modules, displays, communication interfaces, and other peripherals.

Working Principle

The board operates around the QingKe V4B RISC-V processor, which executes the application firmware stored in its internal Flash memory. The SRAM is used during program execution for temporary variables, buffers, and runtime data.

The processor communicates with external hardware through its integrated peripheral interfaces, including UART, SPI, IIC, CAN, and USB 2.0. Analog signals can be processed using the integrated 12-bit ADC, while TouchKey functionality can be used for compatible capacitive-touch applications.

The integrated DMA controllers allow data to be transferred between peripherals and memory with reduced processor intervention, improving overall system efficiency.

For energy-efficient applications, the board can enter Sleep, Stop, or Standby modes to reduce power consumption when full processing performance is not required.

Power Consumption

The CH32V203C8T6 is designed for low-power embedded applications. Its stated power consumption includes approximately:

• Run Mode: 44.65µA/MHz
• Sleep Mode: 17.90µA/MHz

Actual power consumption may vary depending on the operating frequency, enabled peripherals, connected external components, and application conditions.

Peripheral and Interface Support

The board provides a wide range of integrated peripherals for embedded development:

• USB 2.0 Host/Device for USB-based applications
• UART interfaces for serial communication
• CAN interface for industrial and automotive communication applications
• IIC interface for sensors, displays, memory devices, and peripherals
• SPI interface for high-speed peripheral communication
• 12-bit ADC for analog signal measurement
• TouchKey support for capacitive touch applications
• DMA controllers for efficient data transfers
• Timers for timing, control, PWM, and other applications
• CRC unit for hardware-assisted data integrity calculations
• 2-wire serial debug interface for development and debugging

Applications

• RISC-V embedded development
• Low-power embedded systems
• IoT devices
• Battery-powered applications
• Robotics projects
• Industrial automation
• Sensor-based systems
• Data acquisition systems
• USB-based embedded applications
• CAN communication projects
• UART communication projects
• SPI and IIC peripheral projects
• Touch-sensitive interfaces
• Motor and actuator control
• Embedded control systems
• Educational RISC-V projects
• Hardware prototyping
• Custom development boards
• Smart electronic devices
• Low-power IoT prototypes

Package Includes

• 1 × WeAct Studio CH32V203C8T6 RISC-V Low Power Core Demo Board

Product Disclaimer

Product images are for illustrative and representational purposes only. The actual product may vary slightly in colour, PCB markings, component placement, dimensions, connector configuration, or overall appearance depending on the manufacturing batch.

Additional cables, programmers, sensors, displays, modules, and other accessories are not included unless specifically mentioned in the package contents.

The stated electrical specifications and power consumption values are provided for reference. Actual performance and power consumption may vary depending on firmware, operating conditions, peripheral usage, supply conditions, and connected external components.