AI7931HD is a highly integrated IoT module that features an ARM® Cortex-M33 application processor, a low power 1T1R 802.11a/b/g/n/ac/ax dual-band Wi-Fi subsystem, a Bluetooth v5.0 subsystem and a Power Management Unit (PMU). This SoC is based on ARM® Cortex-M33 with floating point microcontroller (MCU) including SRAM/ROM memory. The module also supports rich peripheral interfaces, including SDIO, SPI master, I2C, I2S, IR input, UART, AUXADC, PWM, and GPIOs.
EK-AI7931HD should plug in a FTDI debug board at U69. Within this FTDI debug board to make UART signal transfer to USB signal. This debug board also provide a Micro-USB connector to link to with your PC with USB cable.
。Module: AI7931HD with on-board printed antenna and external connector switch
。Embedded 1MB SRAM / 4MB pSRAM / 16MB external Flash with XIP and on-the-fly AES
。IEEE 802.11 1T1R a/b/g/n/ac/ax dual-band Wi-Fi subsystem
。Wi-Fi security WFA WPA/WPA2/WPA3 personal,WPS2.0
。Bluetooth 5.0 2M_PHY / Long Range / Advertising Extension / SAM / CS#2
。Bluetooth 4.0 BLE only mode and Up to 8 BLE link
。Hardware crypto engines including AES, DES/3DES, SHA, ECC, TRNG for network security
。Rich Peripheral : SDIO, SPI Master, UART, I2C, I2S, IR, ADC and PWM
。Supports GPIOs multiplexed for UART*2, SDIO*1, SPI*2, I2C*2, IR*1, I2S*1
。AMIC*2, Audio jack*1, Audio header*2 for speaker, Button*4
。External power supply support: 5V, 3.3V
。Micro USB：5V Power supply / Debug board(FTDI)
。Operation Temperature : 0℃ ~ +60℃
User can check following link for user guide