XR-50B Offine voice+WiFi

Xr-50b WiFi module is mainly developed for high-performance voice recognition, audio playback and WiFi wireless applications. The module is composed of core processor xr872at, ac107 audio codec and power supply and other peripheral circuits. Xr872at integrates arm cortex-m4f MCU and large capacity SRAM running at 384mhz in a small package. Xr872a is a highly integrated low-power Wi Fi microcontroller SOC, supporting RTOS, integrating Wi Fi MAC / BB / RF / PA / LNA, high-performance and highly integrated MCU, which enables software to perform more complex tasks, supports AES / DES / 3DES / Sha / MD5 / CRC and other hardware encryption engines to make data transmission more secure and faster.

A new type of digital RF transmitter designed with xradiotech mpdtm technology can provide higher output power and maintain higher efficiency, and keep the chip insensitive to antenna mismatch, but it always has good EVM under different VSWR. It also includes many peripherals, including UART, Twi, SPI, dmic, audio codec, PWM, CIR (T / R), CSI, SDIO and ADC. Xr-50b WiFi module supports standard ieee802.11b/g/n protocol and has complete TCP / IP protocol stack. Users can use this module to add networking functions to existing devices, or they can use it to build independent network controllers. When carrying the application and acting as the only application processor in the device, it can boot directly from the external flash memory. The built-in cache memory can improve system performance and reduce memory requirements.

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1.2 characteristics

◼  Support IEEE 802.11b/g/n, 1x1 SISO 2.4GHz

◼  Built in arm cortex-m4f 32-bit micro MCU, main frequency up to 384mhz

◼  Built in 416kb SRAM, 160kb ROM and 4MB PSRAM

◼  Support external flash and execute in place (XIP) mode

◼  Built in eFuse with 1024 bits

◼  8-channel shared universal DMA channel

◼  Built in 8-channel 12 bit resolution and 10 bit effective SAR A / D converter, including 7 common channels and 1 Vbat voltage detection channel

◼  Integrated Wi Fi MAC / BB / RF / PA / LNA

◼  Support WEP, WPA / WPA2, wps2.0

◼  Support UART / GPIO / ADC / PWM / I2C / I2S / SPI / CSI interface

◼  Support AES / DES / 3DES / Sha / MD5 / CRC encryption engine

◼  Support STA / AP / sta + AP working mode

◼  Support smart config / airkiss (wechat) one click distribution network

◼  Support serial port local upgrade and remote firmware upgrade (FOTA)

◼  General at command can be used quickly

◼  It supports secondary development and integrates windows and Linux development environment

◼  On board ac107 audio codec circuit, supporting dual electret wheat