Realtek Ameba-RTL8195AM WiFi & NFC Module

Introduction
Ameba-RTL8195AM is an IoT (Internet of things) microcontroller developed by Realtek. It combines an ARM-Cortex M3 MCU, Wi-Fi and NFC (Near Field Communication) in a single chip. It provides high speed connectivity interface, such as USB 2.0 host, USB 2.0 device, SDMMC HS, SDIO device and MII/RMMII interfaces. It also provides a bunch of configurable GPIOs which are configured as digital peripherals for different applications and control usage. Moreover, the chip also has SPI, I2C, UART serial communication interfaces, and ADC & DAC analog interfaces.
Realtek, as one of the biggest suppliers of Wi-Fi solution, its Ameba-RTL8195AM offers trustworthy stability and reliability. Ameba-RTL8195AM, the first low power consuming IoT chip integrates Ethernet and NFC. It is a cheap and reliable choice for IoT developers.

Caution: RTL8195AM is developer-oriented and some functions are still in testing. Please check the official website for more details.

Features :
Support for Arduino and Micropython programing
Supports 802.11 b/g/n 1x1 Wi-Fi
Supports NFC read/write
10/100 Ethernet MII/ RMII/RGMII interface
Supports USB OTG
Supports SDIO device/SD card controller
Hardware: SSL engine
30 x GPIO(Maximum)
Supports 2 x SPI master-slave interface communication
Supports 3 x UART interface (2x HS-UART & 1x log UART)
Supports 2 x I2C master-slave interface communication
Supports 2 x I2S/PCM master-slave interface communication
Supports 4 x PWM
Supports 2 x ADC
Supports 1 x DAC
Supports ultra-low power consumption
Fast response (up to 400KHz)

Specification :
Operating Voltage: 3.0V~3.3V
Micro-Controller: 32-bit ARM Cortex M3（166MHz）
Antenna Connector: U.FL
ROM/RAM/Flash: 1MB ROM，2MB SDRAM，512KB SRAM
Wireless Network Mode: station / softAP/ SoftAP+station
Data rate: 802.11g 54Mbps (Max.), 802.11n 150Mbps (Max.)
Operating Temperature range: -20℃~+85℃
Dimensions: 19 x 24mm/0.75 x 0.94(inches)

Sources : https://www.dfrobot.com/product-1608.html