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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