board_guidebeginnerconfidence 4/5CC BY 4.0

Tang Nano 20K: where to start

Start with board recognition, exact device selection, LED example, flash/SRAM programming distinction and board-revision pinout check.

Bring up the Tang Nano 20K with the official LED guide first. Confirm the board enumerates, select GW2AR-LV18QN88C8/I7 in Gowin EDA, then test programming. Move to HDMI or audio only after LED and UART paths are known-good.

Graph links

Boards: sipeed/tang-nano-20k

Chips: GW2AR-LV18QN88C8/I7

Toolchains: gowin-eda, yosys-nextpnr-apicula

Protocols: jtag, uart, hdmi, i2s

Pitfalls: Bad USB cable or hub can look like a board failure. SRAM programming is not persistent across power cycles.

Commands

openFPGALoader -b tangnano20k build/top.fs

Related boards

SipeedGW2A/GW2ARbeginnerconfidence 4/5

Tang Nano 20K

Compact Gowin GW2AR board with HDMI, audio amplifier, TF card slot, SDRAM, and onboard debugger.

GW2AR-LV18QN88C8/I7open toolchain28.17 USDeducationvideoaudiorisc-v

Sources

https://wiki.sipeed.com/hardware/en/tang/tang-nano-20k/nano-20k.html https://wiki.sipeed.com/hardware/en/tang/tang-nano-20k/example/led.html https://trabucayre.github.io/openFPGALoader/vendors/gowin.html

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