ESP-M2 Wifi Module On-Board Antenna ESP8285 Wireless Transparent Transmission Serial Port To WiFi Compatible With ESP8266

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  • ESP8285 = ESP8266 + 1M Flash, which can withstand high temperatures up to 125 degrees Celsius! And the original ESP8266 source code program can be used intact.
  • The core processor of the ESP-M2 module uses the cost-effective chip ESP8285. The chip integrates an enhanced version of the Tensilica ’s L106 Diamond Series 32-bit core processor in a smaller package with on-chip SRAM. ESP8285 has a complete Wi-Fi network function, which can be used independently or run as a slave on other host MCUs. When the ESP8285 is hosting an application, it can be launched directly from the external Flash. The built-in cache memory helps improve system performance and optimizes the storage system. In addition, ESP8285 can be used as a Wi-Fi adapter through SPI / SDIO interface or I2C / UART port, and can be applied to any microcontroller-based design.


ESP-M2 wifi module features:

  • Ultra-small size;
  • Serial to WiFi;
  • Wireless transparent transmission;
  • Long distance ultra low power consumption;
  • An external antenna can be used.
  • High temperature resistance up to 125°C
  • Fully compatible with ESP8266, the source code can be directly ported


SOC characteristics:

  • Built-in Tensilica L106 ultra-low power 32-bit microprocessor with 80MHz and 160MHz frequency support, RTOS support
  • Built-in TCP/IP protocol stack
  • Built-in 1 10 bit high precision ADC
  • Peripheral interface HSPI, UART, I2C, I2S, IR Remote Control, PWM, GPIO
  • Deep sleep keeps current at 10uA and shutdown current is less than 5uA
  • Wake up, connect and pass packets within 2 ms
  • Standby power consumption is less than 1.0mW (DTIM3)
  • Built-in 1Mbyte SPI Flash

Wi-Fi features:

  • Support for 802.11 b/g/n/e/i
  • Support Station, SoftAP, SoftAP+STA mode
  • Support for Wi-Fi Direct (P2P)
  • Supports hardware acceleration of CCMP (CBC-MAC, counter mode), TKIP (MIC, RC4), WAPI (SMS4), WEP (RC4), CRC
  • P2P discovery, P2P GO mode/GC mode and P2P power management
  • WPA/PA2 PSK and WPS
  • 802.11 i security features: pre-authentication and TSN
  • Support for 802.11n (2.4 GHz)
  • 802.1h/RFC1042 frame packing
  • Seamless roaming support
  • Support AT remote upgrade and cloud OTA upgrade
  • Support for Smart Config (including Android and iOS devices)

Module peripherals:

  • 2xUART
  • 1xADC
  • 1xEn
  • 1x wake-up pin
  • 1xHSPI
  • 1xI2C
  • 1xI2S
  • Up to 10xGPIOs
  • Operating temperature range: -40°C-125°C

Shipping list:

  • 10pcs ESP-M2 wifi module


  • The module supply voltage is 3.3V DC and the current is 500mA or more;
  • Wi-Fi module IO maximum output current is 12mA;
  • Wi-Fi module NRST pin is active low; EN enable pin is active high;
  • The Wi-Fi module enters the upgrade mode: GPIO0 is at a low level, then the module is reset and powered on; the Wi-Fi module enters the normal working mode: GPIO0 is at a high level, and the module is reset and powered.
  • The RXD of the Wi-Fi module is connected to the TXD of the external MCU, and the TXD of the Wi-Fi module is connected to the RXD of the external MCU.
  • More documents can be downloaded at wiki.doit.am.




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