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ESP8266 ESP-12F WiFi Module 4M

ESP8266 ESP-12F WiFi Module 4M

The high-performance chip ESP8266EX powers the ESP-12F module. It features a sophisticated Tensilica L106 32-bit MCU with 16-bit short mode, supporting frequencies of 80MHz and 160MHz along with RTOS support. The chip has complete WiFi functionality and can be used independently or as a slave device with another MCU via SPI, SDIO, I2C, or UART interfaces.

It comes with a built-in high-speed buffer for improved performance and can boot directly from onboard flash. The ESP8266EX enables low-power consumption, fast wake-up, and reliable wireless communication in compact embedded applications.

Package Includes:

  • 1 x ESP-12F WiFi Module (ESP8266EX)

12.60 AED 12.60 AED Tax Included
12.60 AED Tax Included

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Specifications:

  • Built-in Tensilica L106 ultra-low-power 32-bit CPU
  • Main frequency: 80MHz / 160MHz with RTOS support
  • Built-in TCP/IP protocol stack
  • 10-bit high-precision ADC (1 channel)
  • Peripheral Interfaces: HSPI, UART, I2C, I2S, IR Remote Control, PWM, GPIO
  • Deep sleep current: 10µA; Cut-off current: < 5µA
  • Wake, connect, and transmit in under 2ms
  • Power consumption < 1.0mW in standby (DTIM3)
  • Built-in 1MB SPI Flash
  • Working temperature: -40℃ to +125℃
  • Module size: 16mm × 24mm

WiFi Properties:

  • Supports IEEE 802.11 b/g/n/e/i
  • WiFi Modes: Station, Soft AP, Soft AP + STA
  • Supports WiFi Direct (P2P)
  • Supports WPA/WPA2 PSK, WPS, and 802.11 security certification
  • Encryption: CCMP, TKIP, WEP, WAPI, CRC (hardware accelerated)
  • P2P: Discovery, GO/GC mode, power management
  • Supports 802.11n (2.4GHz)
  • 802.1h/RFC1042 encapsulation
  • Supports OTA (Over-the-Air) and AN cloud updates
  • Supports Smart Config (Android and iOS compatible)

Module Interface:

  • 2 x UART
  • 1 x ADC
  • 1 x EN
  • 1 x Wake-Up Pin
  • 1 x HSPI
  • 1 x I2C
  • 1 x I2S
  • 10+ GPIOs

Programming with USB to Serial Converter:

To program the ESP-12F module using a USB to Serial converter (e.g., CH340 or PL2303), ensure the following:

  • Use 3.3V logic level and power — do not use 5V
  • Use a 3.3V power supply capable of supplying ~250mA
  • Recommended: Add a decoupling capacitor between VCC and GND

Basic Programming Circuit:

  • EN, RST, and GPIO0 → Pull HIGH via 10kΩ resistors
  • GPIO15 → Pull LOW via 10kΩ resistor
  • Power the module with a 3.3V regulated supply

With this configuration, the ESP8266 will power on in normal operation mode and run uploaded sketches.

Pinout of the Module:

ESP-12E Pinout

 

References:

 

Features

  • LoRa SX1276 Wireless Module: Built around the SX1276 chip, the module employs LoRa technology, allowing for long-range data transmission and excellent penetration capabilities.
  • Configurable Output Power: The module's output power can be adjusted from +13 to +20 dBm (up to 100 mW) through software settings, providing flexibility in balancing communication distance and power consumption.
  • Low Power Consumption: During transmission, power consumption ranges from 50mA (+13 dBm) to 150mA (+20dBm), while in listening mode, it requires approximately 30mA, making it energy-efficient for battery-operated applications.
  • AES-128 Encryption Support: The module offers AES-128 encryption, ensuring secure and private data transmission, making it suitable for applications that require data confidentiality.
  • Multipoint Network Capabilities: It supports multipoint networks, allowing the establishment of individual nodes within the network for seamless and efficient communication.
  • Wide Power Supply Range: The module can be powered with a voltage range from 3V to 5V, making it compatible with various power sources and microcontrollers.

NOTE: It is important to solder a 16cm length of cable to the antenna pin before using it since not connecting any antenna can damage it. Optionally, the board has pads to solder an SMA connector with antenna thread.

Specifications

  • LoRa SX1276 wireless module with SPI interface (900 MHz)
  • Output power: +13 to +20 dBm up to 100 mW configurable by software
  • Consumption: 50mA (+13 dBm) to 150mA (+20dBm) in transmission, approx 30mA in listening
  • Supports AES-128 encryption
  • Supports multipoint networks with individual nodes
  • Power: 3 to 5V