Espressif Systems ESP8266EX - General Overview; 1.1. Introduction

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Espressif Systems
ESP8266EX
Hardware User Guide
1. General Overview 5 ......................................................................................................
1.1. Introduction! 5"......................................................................................................................
1.2. Features! 6"...........................................................................................................................
1.3. Parameters! 7".......................................................................................................................
1.4. Major Applications! 8"...........................................................................................................
2. Hardware Overview 9 ...................................................................................................
2.1. Terminal Configuration and Functions! 9".............................................................................
2.2. Schematics! 12"....................................................................................................................
2.2.1. Power-supply Pins! 13 .......................................................................................................
2.2.2. Power-on Sequence and Power Reset! 14 .........................................................................
2.2.3. Flash ! 15 ...........................................................................................................................
2.2.4. Crystal Oscillator! 15 ..........................................................................................................
2.2.5. RF! 16 ................................................................................................................................
2.2.6. External Resistor 12K! 17 ...................................................................................................
2.3. Layout Design! 17"................................................................................................................
2.3.1. ESP-WROOM Module Design! 17 ......................................................................................
2.3.2. ESP8266EX as Slave Device! 20 .......................................................................................
2.3.3. FAQ On Hardware Design! 22 ............................................................................................
3. ESP-LAUNCHER Development Board 24 ...................................................................
3.1. Instructions on the Use of ESP-LAUNCHER Development Board! 25"................................
3.2. Pin Definitions of ESP-LAUNCHER Development Board! 28"..............................................
3.3. Typical Applications Using ESP-LAUNCHER! 31"................................................................
3.3.1. ESP-LAUNCHER Test Board! 31 ........................................................................................
3.3.2. SMD Module ESP-WROOM-02! 31 ....................................................................................
3.3.3. DIP Module ESP-WROOM-01! 35 ......................................................................................
4. Compiling, Downloading, and Debugging 36 .............................................................
4.1. Set Up the Compiling Environment! 36"...............................................................................
4.2. Download Firmware! 38".......................................................................................................
4.3. Debugging AT Commands via UART! 38".............................................................................
Espressif Systems / Jun 1, 2015 3 48
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