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...
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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 single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- 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 asynchronous serial interface that sends data over separate transmit and receive wires, usually labelled TX and RX, with both ends set to the same baud rate. It is a common way for microcontrollers and other serial devices to exchange data.
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
