Features: CPU : RISC-V Dual Core 64bit, 400Mh adjustable. High-speed UART and JTAG interface for debugging. Up to 8 channels of audio input data, ie 4 stereo channels. The SRAM is split into two parts, 6MiB of on-chip general-purpose SRAM memory and 2MiB of on-chip AI SRAM memory, for a total of 8MiB. With onboard WIFI, uses ESP8285 chip.