ATBM6421 is 2.4GHz, 1T1R, IEEE 802.11b/g/n Wi-Fi IoT chip.
? Integrated low power MCU, 1T1R 2.4GHz RF circuit, IEEE 802.11b/g/n MAC, baseband and power management system.
? Support IEEE 802.11 b/g/n and 20MHz bandwidth (IoT mode doesn't support 40MHz as default.)
? Hardware accelerated TCP/IP protocol
? Support WPA, WPA2, and hardware Crypto Engine for Advanced Fast Security
? Integrated 160MHz 32bit MCU
? Integrated 256KB SRAM, and 80KB+ free space for user applications
? Upgrade firmware via UART and I2C
? Support OTA firmware upgrade
? Support 40MHz cyrstal
? Embedded LDO, only need 3.3V power supply
? 5x5 QFN 32 pin package
? Configurable GPIOs
? 1 x I2C
? 1 x UART
? 1 x SPI to connect SPI flash memory
? Smart socket, smart lighting
? Smart air condition control panel
? Smart home
? Smart appliances
? Industrial Wi-Fi devices
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