Sipeed Longan Nano - RISC-V GD32VF103CBT6 Development Board

The Sipeed Longan Nano is a minimalist RISC-V development board based on the GigaDevice GD32VF103CBT6 microcontroller. It features a 32-bit RISC-V core running at 108 MHz, offering a high-performance and energy-efficient alternative to traditional Cortex-M architectures.

Designed with the standard "Blue Pill" form factor (compatible with Arduino Nano footprints), the board features a double-row pin layout for easy breadboard prototyping. It includes a USB Type-C port for power and programming, a microSD card slot, three user LEDs, and supports an optional 0.96-inch TFT LCD display (160x80 pixels).

Specifications

• Microcontroller: GD32VF103CBT6 (32-bit RISC-V Core @ 108 MHz)
• Memory: 128 KB Flash, 32 KB SRAM
• Connection: USB Type-C (USB FS OTG)
• GPIOs: 37 available pins (Blue Pill compatible layout)
• Peripherals: 3x USART, 3x SPI, 2x I2C, 2x CAN 2.0B, 2x 12-bit DAC
• Analog Input: 2x 12-bit ADC (16 channels @ 1 Msps)
• Real-Time: RTC, Watchdog, SysTick
• Storage: microSD card slot (SPI interface)
• Display: Support for 0.96" TFT LCD 160x80 RGB IPS (via 8-pin FPC connector)
• Debugging: Integrated JTAG interface (2x4 pin header)

The board is compatible with the Arduino IDE and PlatformIO. Specific libraries and code examples are available on the official Sipeed GitHub repository.