Microcontroller ESP-12E

Model: ESP-12E.
Description
ESP8266 NodeMCU is a popular and widely used development board based on the ESP-12E WiFi Module that combines elements of easy programming with Arduino IDE (CC++) and WiFi capability. Through the build-in programmer and CH340G USB-to-Serial chip, flashing the ESP8266 and serial output on a PC, development and prototyping projects are done with ease. Just like Arduino boards, the ESP8266 NodeMCU has GPIO pins, voltage regulator, ADC, Micro-USB port (for flashing and serial output) – all on one board. On top of that the ESP8266 NodeMCU has a full WiFi that takes care of the WiFi communication to a server or client.

The ESP8266 is a system on a chip (SoC), manufactured by the chinese company Espressif. It consists of a Tensilica L106 32-bit micro controller unit (MCU) and a Wi-Fi transceiver. It has 11 GPIO pins* (General Purpose Input/Output pins), and an analog input as well. This means that you can program it like any normal Arduino or other microcontroller. And on top of that, you get Wi-Fi communication, so you can use it to connect to your Wi-Fi network, connect to the Internet, host a web server with real web pages, let your smartphone connect to it, etc … The possibilities are endless! It’s no wonder that this chip has become the most popular IOT device available.

It contains a built-in 32-bit low-power CPU, ROM and RAM. It is a complete and self-contained Wi-Fi network solution that can carry software applications as a stand-alone device or connected with a microcontroller (MCU). The module has built-in AT Command firmware to be used with any MCU via COM port. The ESP8266 can be flashed and programed using the Arduino IDE. Due to its large open source developer community, a large number of libraries for this popular microcontroller is available .

Processor:
The ESP8266EX integrates a Tensilica L106 32-bit RISC processor, which achieves extra-low power consumption and reaches a maximum clock speed of 160 MHz. The Real-Time Operating System (RTOS) and Wi-Fi stack allow 80% of the processing power to be available for user application programming and development.

Memory:
32 KB instruction RAM
80 KB user data RAM
16 KB ETS system data RAM
External QSPI flash: up to 16 MB is supported (512 KB to 4 MB typically included)
IEEE 802.11 b/g/n Wi-Fi
Integrated TR switch, balun, LNA, power amplifier and matching network
WEP or WPA/WPA2 authentication, or open networks
16 GPIO pins
SPI
I²C (software implementation)
I²S interfaces with DMA (sharing pins with GPIO)
UART on dedicated pins, plus a transmit-only UART can be enabled on GPIO2
10-bit ADC (successive approximation ADC)