W806 Development Board 240MHz MCU CH340 IoT Microcontroller CDK Board

W806 high-performance microcontroller board, 240MHz, built-in Flash and RAM, onboard CH340 USB to serial. Supports CDK IDE, Arduino compatible. Ideal for IoT nodes, smart home, motor control, audio processing. Cost-effective alternative to STM32

W806 Development Board Application features:

◆ Main Chip
W806 (high-performance Chinese MCU)

◆ Core
32-bit processor

◆ Clock Speed
240MHz (maximum)

◆ Memory

Flash: 1MB (built-in)

RAM: 256KB (built-in)

◆ Communication Interfaces

UART ×4

SPI ×2

I2C ×2

SDIO

I2S

◆ Peripherals

ADC ×8 (12-bit)

PWM ×12 (16-bit)

Capacitive touch buttons

Hardware encryption (AES/CRC)

◆ Onboard Resources

CH340 USB to serial

Reset button

User button

Power LED

User LED

Micro USB (power/serial)

◆ Pin Headers
All IOs broken out (2.54mm pitch)

◆ Development Environments

CDK (official IDE)

Arduino IDE (third-party support)

RT-Thread

◆ Typical Applications

IoT nodes

Smart home control

Motor drive (FOC)

Audio processing

Industrial control

Human-machine interface

Sensor data acquisition

W806 Development Board Key Advantages

240MHz high clock speed

1MB Flash + 256KB RAM

Onboard CH340, direct USB connection

Cost-effective

Stable Chinese chip supply

STM32F103/F407 alternative

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FAQ

1. What is the W806 Development Board?
The W806 Development Board is an IoT MCU development board based on the W806 chip. The W806 chip features a domestic T-Head "XuanTie" 32-bit XT804 processor, operating at up to 240MHz, with built-in DSP, floating-point unit, and security engine. The board includes an onboard CH340 USB-to-serial chip, enabling power supply, communication, and program download through a single Micro USB port.

2. What are the key specifications of the W806 Development Board?
Key specifications include:

• Processor: 32-bit XT804, up to 240MHz, with DSP, FPU, and security engine

• Memory: 1MB Flash, 288KB RAM (some sources indicate 2MB Flash)

• Operating Voltage: 3.3V single-supply

• Peripherals: 6×UART, 4×16-bit ADC, 5×PWM, GPIO (up to 44), SPI, I2C, I2S, SDIO, LCD controller, Touch Sensor (15 channels), etc.

• PSRAM: Supports up to 64MB external PSRAM expansion

• Low Power: Standby power consumption < 10μA

3. What package does the W806 Development Board use?
The W806 main chip uses a QFN56 package, measuring just 6mm × 6mm. The development board typically features a purple PCB with all I/O pins accessible via pin headers.

4. What applications is the W806 Development Board suitable for?
The W806 Development Board is widely used in smart home, smart toys, industrial control, medical monitoring, small appliances, and other IoT applications. With its 240MHz high clock speed and rich peripheral interfaces, it is suitable for data acquisition, HMI, motor control, LCD display, and various embedded projects.

5. What development tools support the W806 Development Board?
The W806 is developed using the T-Head CDK (C-Sky Development Kit) IDE. CDK is a graphical IDE specifically designed for IoT development, supporting both Windows and Linux platforms. Developers need to install the CDK IDE, Upgrade_Tools download tool, and USB driver to complete the environment setup.

6. What is the operating temperature range of the W806 Development Board?
The W806 chip operates over a temperature range of -40°C to +85°C (industrial grade). The chip uses 3.3V single-supply power and supports four low-power modes: Run, Sleep, Standby, and Shutdown.

7. What is the memory capacity of the W806 Development Board?
The W806 chip features 1MB Flash program memory and 288KB RAM. Some chip variants include 2MB Flash. Additionally, the chip integrates a PSRAM interface supporting up to 64MB external PSRAM memory expansion.

8. What peripheral interfaces does the W806 Development Board support?
The W806 Development Board provides rich peripheral interfaces:

• Communication: 6×UART, SPI (Master/Slave/High-Speed), I2C, I2S, SDIO (HOST/DEVICE)

• Control: 5×PWM, GPIO (up to 44)

• Analog: 4×16-bit ADC

• Display & Interaction: LCD controller (4×32), 15-channel Touch Sensor

• Others: 7816 interface, PSRAM expansion interface

9. How do you download programs to the W806 Development Board?
The W806 Development Board supports two programming methods:

• Serial Download: Connect via the onboard CH340 USB-to-serial chip, use Upgrade_Tools to load the .fls file, click download, and press the reset button to flash

• Debugger Download: Use the CKLinkLite debugger for debugging and programming

⚠️ Note: The W806 development board's reset pin is not connected to the serial chip's RTS by default, requiring a manual reset button press to trigger the download.

10. What is the difference between W806 and W801?
Both W806 and W801 are secure IoT MCU chips from WinnerMicro, sharing the same XT804 processor core. The key difference is that W801 integrates Wi-Fi and Bluetooth for wireless IoT applications, while W806 does not include wireless functionality and focuses on wired communication and control applications. Both support the T-Head CDK development environment.