For Tang Primer 20K is a core board in a DDR3 sodimm package designed based on GW2A-V18PG256C8IC8I7.Two additional backplanes are prepared, namely the Dock backplane and the Lite backplane.Distributed static random access memory S-SRAM (bits): 41472Block static random access memory B-SRAM (bits): 828KThe number of block static random access memory B-SRAM (pcs): 46Master:GW2A-LV18PG256C8IC8I7Logical Units (LUT4): 20736Register (FF): 15552Multiplier (18x18 Multiplier): 48Phase Locked (PLLs): 4 I/O : 8Memory: 128M DDR3 128Meg x 16Flash: 32Mbits NOR Flash download refer to related questions at the bottomDebug interface: Jtag + Uart JST SH1.0 8Pins connectorSD card slot: one -pullDisplay interface: 8Pins spi lcd connectorOverall package: 204P DDR3 Sodimm Gold FingerAvailable IOs: 117 Different batches, product appearance and color may be different, does not affect the useMaterial: PCBcolour: blackPackage Contents:1 x motherboard (core board+backplane,Do not solder pin headers)1 x USB C to A cable1 x module1 x Terminal cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.