Espressif’s ESP8266EX delivers highly integrated Wi-Fi SoC solutions to meet user’s continuous demands for efficient power usage, compact design and reliable performance in the IoT industry. With the complete and self-contained Wi-Fi networking capabilities, ESP8266EX can perform either as a standalone application or as the slave to a host MCU. When ESP8266EX hosts the application, it promptly boots up from the flash. The integrated highspeed cache helps to increase system performance and optimize system memory. Also, ESP8266EX can be applied to any microcontroller design as a Wi-Fi adaptor through SPI/SDIO or UART interfaces.