SparkFun
Espressif ESP8266EX Wi-Fi SoC
· MPN: COM-26983
This highly integrated Espressif Wi-Fi system-on-chip is designed for compact Internet of Things hardware that needs reliable 2.4GHz wireless networking with...
This highly integrated Espressif Wi-Fi system-on-chip is designed for compact Internet of Things hardware that needs reliable 2.4GHz wireless networking with efficient power usage.
The ESP8266EX can run as a standalone application processor or operate as a Wi-Fi adapter for a host microcontroller over SPI/SDIO or UART. When hosting an application, it boots from flash, and its integrated high-speed cache helps improve system performance and memory use.
On-chip integration includes antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters and power management modules, helping minimise PCB size and external circuitry. It also includes an enhanced Tensilica L106 Diamond series 32-bit processor, on-chip SRAM, and GPIOs for connecting external sensors and devices.
Sold as individual units. Note: not recommended for new designs.
Specifications:
- Protocol: 802.11 b/g/n (HT20)
- Frequency Range: 2.4GHz ~ 2.5GHz (2400MHz ~ 2483.5MHz)
- Operating Voltage: 2.5V ~ 3.6V
- Operating Current: Average value: 80mA
- Operating Temperature Range: –40°C ~ 125°C
Jargon buster
Plain-language definitions for the technical terms used above.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- RF
- RF means radio frequency, referring to signals used for wireless communication and other high-frequency electronics. A low-noise, stable power supply is important for RF circuits because power noise can affect signal quality and measurements.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- SRAM
- Fast temporary memory used by a processor while a program is running. More SRAM helps with projects that handle larger data buffers, networking, displays, or more complex code.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
Find this product in
ESP8266EX Datasheet
Datasheet · 1.3 MB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 435.3 KB · Click any page to view full size
