MCU with built in WiFi

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Microcontroller (MCU) with built in WiFi

Introduction

IoT is subject about connecting devices to the internet so that they can send/receive data, accept commands remotely through web pages or cloud applications. For example, one can turn on Air conditioning units remotely using a smartphone app, or a doctor can receive bio health information for his patient on his smartphone.

In order to achieve that the following components are required

  • Internet connectivity
  • A Microchip capable of communicating to internet, preferably using WiFi
  • A Microcontroller with memory to run a program for communication
  • Some additional hardware to control the device.

There are also Microchips that are Microcontrollers as well as WiFi adapters. Here are some examples.

CPU with integrated Wi-Fi for small footprint non-Linux platform.

Manufacture Product Name Protocols CPU URL
Espressif ESP8266 IEEE 802.11b/g/n Tensilica Xtensa LX106 running at 80 MHz; RAM 64+96 kB. QFN32. Run from SPI Flash. ESP8266
Espressif ESP32 IEEE 802.11b/g/n Double core Tensilica Xtensa LX106 running at 160 MHz; RAM ? kB. Run from SPI Flash. ESP32
Texas Instruments CC3200 IEEE 802.11b/g/n ARM® Cortex®-M4 Core at 80 MHz; RAM 256kB. QFN64. Run from SPI Flash. CC3200
Nufront NL6621 IEEE 802.11b/g/n ARM® Cortex®-M3 Core at 160 MHz; RAM 448kB. QFN64. Run from SPI Flash. NL6621
MediaTek MT7681 IEEE 802.11b/g/n QFN40. Run from SPI Flash. MT7681

CPU with integrated Wi-Fi for embedded Linux.

Manufacture Product Name Protocols CPU URL
MediaTek MT7688 IEEE 802.11b/g/n MIPS24KE @ 580 MHz. Linux. []
Intel Edison Example Example Link