Tang Nano 20K is a core board using GOWIN Semiconductor GW2AR-18 QN88. The chip has 20736 logical lookup tables (LUT4) and 15552 registers (FF). There are two PLLs inside and multiple DSP units. Supports 18-bit x 18-bit multiplication to speed up number operations. It has built-in low-latency 64Mbits SDRAM, making it easier to run the NES emulator and better able to run soft-core Linux systems. The onboard BL616 chip serves as the FPGA JTAG downloader and serial port for communication with the FPGA. The board uses a 27MHz crystal oscillator by default to multiply the clock required for HDMI-compatible display, and is also equipped with an MS5351 clock generation chip to generate a variety of required clocks at will. The onboard download chip has been upgraded to a USB2.0 HS interface, with the functions of high-speed JTAG download, serial communication, high-speed SPI reception, and precise clock configuration. color:black Material:PCB+electronic components Different batches may have different appearances, but will not affect the use Package Contents: 2 x Tang Nano 20K Core Board 2 x data cable 4 x PIN