Espressif ESP8266 Series User Manual

Table of Contents
1.
ESP8266EX 1 ................................................................................................................................................
1.1.
Overview 1 ..................................................................................................................................................................
1.2.
Specifications 2 ..........................................................................................................................................................
1.3.
Pin Definitions 3 ........................................................................................................................................................
1.4.
Schematics 5 ..............................................................................................................................................................
1.4.1.
Power Supply 6 .................................................................................................................................................
1.4.2.
Power-on Sequence and Power Reset 7 ...................................................................................................
1.4.3.
Flash 7 ..................................................................................................................................................................
1.4.4.
Crystal Oscillator 8 ...........................................................................................................................................
1.4.5.
RF 8 .......................................................................................................................................................................
1.4.6.
External Resistor 12K 9 ...................................................................................................................................
1.5.
Layout Design 9 .........................................................................................................................................................
1.5.1.
Standalone ESP8266EX Module 9 ..............................................................................................................
1.5.2.
ESP8266EX as Slave Device 11 .....................................................................................................................
1.5.3.
Typical Layout Problems And Solutions 13 ...............................................................................................
1.6.
Application 15 .............................................................................................................................................................
1.6.1.
Wi-Fi Smart Hardware Converted from UART Serial Ports 15 ............................................................
1.6.2.
Sensor 15 ..............................................................................................................................................................
1.6.3.
Smart Light 15 ....................................................................................................................................................
1.6.4.
Smart Plug 15 ......................................................................................................................................................
2.
ESP-LAUNCHER 16 .......................................................................................................................................
2.1.
Overview 16 ................................................................................................................................................................
2.2.
Schematics 19 .............................................................................................................................................................
2.2.1.
Interfaces 19 .......................................................................................................................................................
2.2.2.
5V Power Supply 20 ........................................................................................................................................
2.2.3.
Test Module 21 ..................................................................................................................................................
2.3.
Test Board 21 .............................................................................................................................................................
3.
ESP-WROOM 23 ...........................................................................................................................................
3.1.
SMD Module ESP-WROOM-02 23 ........................................................................................................................
3.2.
DIP Module ESP-WROOM-01 25 ...........................................................................................................................
3.3.
Schematics 26............................................................................................................................................................

Espressif ESP8266 Series Specifications

General

RAM	50 KB
Wi-Fi	802.11 b/g/n
GPIO Pins	17
ADC	1
ADC Resolution	10-bit
I2S	Yes
Operating Temperature	-40°C to +125°C
Clock Speed	80 MHz (can be overclocked to 160 MHz)
Flash Memory	External, up to 16 MB
Operating Voltage	3.0V to 3.6V
I2C	Yes (software implementation)
UART	2
Deep Sleep Power Consumption	10 µA
Dimensions	Varies depending on module
Processor	Tensilica L106 32-bit