Brochure

Page 6
WiFi 4 click
WiFi 4 click carries SPWF01SA, a complete standalone
WiFi module with a single-chip 802.11 b/g/n transceiver,
a 32-bit STM32 MCU, along with a built-in 2.4 GHz ISM
band antenna.
The 14 additional GPIO pins that line the edges of the
board have alternate functions like SPI, ADC, I2C, DAC
(although access to those functions depends on the
firmware version loaded in the module).
¬ Built-in 2.4 GHz ISM band antenna
¬ A 32-bit STM32 MCU
¬ 1.5 MB of internal flash
¬ 64 KB of RAM