Sipeed LicheeRV Nano-B SG2002 RISC-V & ARM Development Board

Specifications

• SoC: SG2002

• Core Architecture: Selectable RISC-V C906 or ARM Cortex-A53 (via hardware switch)

• Dimensions: 35.56 mm x 22.86 mm

• Pin Pitch: 2.54 mm

• Storage: TF (MicroSD) Card Slot

• Video/Display: MIPI Camera (Front), MIPI Display (Back), Touch Screen (Back)

• Audio: Onboard MIC, Speaker PA solder pads

• USB Interface: USB Type-C

• User Controls: Reset Button, User Button, User LED, Power LED

• GPIO Logic Voltage: 3.3V (GPIOA, GPIOB, GPIOP)

Key Applications and Projects

• TinyML & Machine Vision: Utilizing the MIPI camera interface to run lightweight facial recognition or object detection models at the edge.

• Cross-Platform Firmware Development: Using the hardware toggle switch to write and benchmark RTOS kernels on both ARM and RISC-V architectures seamlessly.

• Custom Smart Home Hubs: Connecting a touchscreen and speaker to build a compact, voice-activated smart home control panel.

Unlock New Capabilities (Project Evolution) The Ultra-Compact Smart Intercom: Standard development boards are often too bulky to fit cleanly inside a wall-mounted enclosure. By taking advantage of the LicheeRV Nano-B's tiny 35.56mm x 22.86mm footprint and standard 2.54mm pitch, you can surface-mount this board directly to a custom PCB. Connect a MIPI camera and an LCD screen to the integrated FPC connectors, wire a small speaker to the PA pads, and you have a complete, AI-powered smart doorbell or video intercom system that fits entirely inside a standard electrical gang box!

PACKAGE INCLUDED

• 1x Sipeed LicheeRV Nano-B Development Board

• 2x 15-Pin Male Header Strips

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What SoC is at the heart of this board? The board is powered by the SG2002 System-on-Chip.

2. Is this a RISC-V or an ARM development board? It is both! The board features a unique hardware switch that allows you to select between a RISC-V C906 core and an arm A53 core.

3. How do I switch between the different architectures? There is a physical slider switch located on the back of the board, directly below the main SoC, labeled "A53 / C906".

4. What are the exact dimensions of the board? The board is extremely compact, measuring exactly 35.56 mm in width and 22.86 mm in height.

5. Is the pin spacing standard for breadboards? Yes, the castellated edge pins feature a standard 2.54 mm pitch, making it perfectly compatible with standard breadboards and perfboards.

6. Does the package include header pins? Yes, the board comes with two rows of male header pins that you can solder onto the board for prototyping.

7. Can I connect a camera directly to this board? Yes, the front of the board features a dedicated MIPI Camera FPC connector.

8. Can I add a screen to the LicheeRV Nano? Yes, the back of the board includes a MIPI Display connector and a separate Touch Screen connector.

9. How do I boot an operating system? The board includes a TF (MicroSD) Card slot on the back for loading your operating system and storing data.

10. What kind of USB connection does it use? It features a modern USB Type-C port on the front edge for power and data.

11. Does the board have any onboard audio capabilities? Yes, it features an onboard MIC on the front and solder pads for a Speaker (PA) on the back.

12. What is the logic voltage for the GPIO pins? The GPIO pins (GPIOA, GPIOB, and GPIOP) operate at a logic level of 3.3V (Vio=3.3V).

13. How many UART interfaces are available? The pinout exposes up to four UART interfaces: UART0, UART1, UART2, and UART3.

14. Are there any physical buttons on the board? Yes, the front of the board has two tactile buttons: a Reset KEY and a USER KEY.

15. Does it have indicator LEDs? Yes, there is a Power LED to indicate the board is receiving power, and a programmable USER LED.

16. Does the pinout support EMMC storage expansion? Yes, the left side of the pinout provides access to EMMC signals (D0, D1, D2, D3, CLK, CMD) for adding external flash storage.

17. What hardware debugging interface is exposed? The board exposes a standard JTAG interface (TCK, TMS, TDO, TDI) on the right side of the pinout.

18. How do I supply power directly to the pins? You can supply 5V to the dedicated 5V pins on the bottom left, or use the VBUS/VSYS pins near the USB port.

19. Does the board support I2C communication? Yes, I2C (labeled as IIC1 and IIC3) pins are available on the right-side header.

20. What is the distance from the edge of the board to the first pin? The distance from the left and right edges of the PCB to the center of the first castellated pin is 1.27 mm.