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activeunknownintermediateconfidence 3/5

Tang Primer 20K Dock

Gowin GW2A-18 dock-style board intended for secondary development with more connectors than Tang Nano boards.

Short verdict: open-source flow. Critical characteristics must be checked against sources before purchase or external wiring.

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Dock-specific features must be checked against the dock revision documentation.
MPN
Tang-Primer-20K-Dock
Status
active
Availability
unknown
Price
not source-backed
Device type
FPGA
Chip
GW2A-LV18PG256C8/I7 (GW2A)
Recommendation
open-source flow
Verified
2026-04-29

Interfaces, connectors and memory

Interfaces

Ethernet x1, HDMI x1, USB 2.0 x1, SD card x1, JTAG/UART connector x1

Connectors

Dock expansion headers x1

Memory

DDR3 1 Gbit, NOR flash 64 Mbit

Toolchains

Gowin EDA

official; proprietary/vendor flow

Yosys + nextpnr-gowin + Apicula

community; open-source flow

Documentation, schematics, pinout, constraints

Sipeed Tang Primer 20K Wikidocumentation

Related KB articles

toolchain_guidebeginnerconfidence 4/5
What Gowin EDA is

Gowin EDA is the vendor flow for Gowin FPGA families used by Tang and Gowin starter boards.

gowintoolchaintang
board_guideintermediateconfidence 3/5
Tang Primer 20K Dock: where to start

Use the Primer 20K docs to identify the core board, dock, exact memory and connector revision before using examples.

tangprimergowin

Where to get help

Sipeed forum

Sources

https://wiki.sipeed.com/hardware/en/tang/https://wiki.sipeed.com/hardware/en/tang/tang-primer-20k/primer-20k.html