The Longan Nano is a minimalist development board for the GD32VF103CBT6 microcontroller based on the GigaDevice RISC-V 32-bit core. It is convenient for students, engineers and geeks to access the new generation of RISC-V processors and understand their features.
The main chip is GD32VF103CBT6, based on the Bumblebee core of the core technology. Support RV32IMAC instruction set and ECLIC fast interrupt function. The core power consumption is only 1/3 of the traditional Cortex-M3.
Chip built-in 128KB Flash, 32KB SRAM
4x universal 16-bit timer,
2x basic 16-bit timer,
1x advanced 16-bit timer
Watchdog, RTC, Systick
1 xUSBFS (OTG),
2 x ADC (10 channel),
2 x DAC
Longan Nano development board, double-row pin design, 700mil pin spacing, can be directly inserted into the breadboard; onboard 8M passive crystal oscillator, 32.768KHz RTC low-speed crystal oscillator, mini TF card slot, and use Type-C USB interface.
CB: 128KB Flash/32KB RAM
Longan Nano supports multiple download methods: USB DFU download, UART ISP download, JTAG download. In the USB DFU download mode, you only need a USB Type-C cable to download the program to the development board. At the same time, Longan Nano supports the standard JTAG interface, which can be debugged online using the in-store RISC-V debugger or any JTAG-enabled debugger (such as J-Link) (JLINK V8 can debug).
The development board is available with a 0.96inch 160x80 IPS RGB LCD and a transparent enclosure with serial firmware/logic analyzer firmware (WIP) for use as a USB to UART/logic analyzer~
Sipeed has adapted the PlatformIO IDE for the Longan Nano development board, which can be visually developed on multiple platforms such as Windows/Linux: