Adafruit WICED WiFi Feather - STM32F205 with Cypress WICED WiFi STM32F205RG 120MHz ARM Cortex M3 MCU. BCM43362 802.11b/G/N radio 128KB SRAM and 1024KB flash memory (total), 16KB SRAM and 128KB flash available for user code, 16MBit (2MB) SPI flash for additional data storage Built in Real Time Clock (RTC) with optional external battery supply 12 standard GPIO pins, with additional GPIOs available via SPI, UART and I2C pins. 7 standard PWM outputs, with additional outputs available via SPI, UART and I2C pins On board single-cell LIPO charging and battery monitoring