Features
Wi-Fi
• IEEE 802.11 b/g/n (2.4GHz, 1x1)
• Supports 20MHz, 40MHz bandwidth in
2.4GHz band
• Wi-Fi security WEP/WPA2/WPS
• SoftAP, sniffer
• Dynamically switching between STA and
SoftAP modes at runtime
• MediaTek smart connection
• Multi-cloud connectivity
• Receiver antenna diversity
• Wi-Fi and Bluetooth LE coexistence
• Integrated balun, PA/LNA
• Optional external LNA and PA support
Microcontroller subsystem
• 192MHz ARM® Cortex®-M4 with FPU
• 14 DMA channels
• One RTC timer, one 64-bit and 5 32-bit
general purpose timers
• Hardware DFS from 3MHz to 192MHz
• Development support: SWD, JTAG
• Crypto engine
o AES 128/192/256 bits
o DES, 3DES
o MD5, SHA-1/224/256/384/512
• True random number generator
• JTAG password protection
Memory
• Up to 384KB SRAM, with zero-wait state
and 96MHz maximum frequency
• Up to 32KB L1 cache with high hit rate,
zero-wait state and 192MHz maximum
frequency.
• Embedded 8Mbits flash, with less than
0.1µA (typical) and 80MHz maximum
frequency deep power-down current
Communication interfaces
• A set of SDIO 2.0 master and SDIO 2.0 slave
• An I2C (3.4Mbps) interface
• Three UART interfaces (3Mbps and with
hardware flow control)
• An SPI master and SPI slave with up to
48MHz SCK, quad mode)
• Two I2S interfaces
o One 16/24-bit, master/slave mode
One 16-bit, master/slave mode with
TDM
o Two TX/RX channels with 16, 24, 48, 96,
192, 11.025, 22.05 and 44.1kHz
frequencies
• Five PWM channels
• 14 GPIOs (fast IOs, 5V-tolerant)
• A single channel 12-bit AUXADC
Power management
• Integrated DC-DC
• Power input
o VRTC: from 1.62V to 3.63V
o VPMU / VRF: 3.3V (+/-10%)
o VIO*: 1.8V, 3.3V (+/-10%)
• Off mode: <0.5µA
• Retention mode (with RTC)
o <2.7µA (RTC only)
o ~4.7µA with 8KB RAM sleep mode
• Deep sleep mode (with external 32kHz clock,
SDIO off)
o 80µA with 0KB RAM sleep mode
o 108µA with 384KB RAM sleep mode
• G-band RX power: 42mA
• G-band TX power
o FPA: 248mA at 19dBm CCK
o HPA: 220mA at 16.5dBm OFDM
• DTIM interval with 32kHz external clock
source and 384KB SRAM
o DTIM=1: 0.62mA
o DTIM=3: 0.29mA
• Ambient temperature from -30°C to 85°C
Clock source
• 26MHz or 40MHz crystal oscillator
• 32kHz crystal oscillator or internal 32kHz RC
for RTC
Package type
• 5-mm x 5-mm x 0.9-mm 40-pin QFN with
0.4-mm lead pitch