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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)

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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: