User Manual

3/7/2018 SunFounder ESP8266 - Wiki
http://wiki.sunfounder.cc/index.php?title=SunFounder_ESP8266 2/8
Pin Functions
Pin Name Description
1 TXD
1)UART_TXD，sending；
2)General Purpose Input/Output：GPIO1；
3)Pull-down is not allowed when startup;
2 GND GND
3 EN
1）Working at high level;
2）Power off when low level is supplied
4 IO2
1）It should be high level when power on, hardware pull-down is not allowed;
2）Pull-up by default;
5 RST External Reset signal, reset when low level is supplied; work when high level is supplied (high level by default);
6 IO0
1)WiFi Status indicator;
2)Operation mode selection:
Pull-up: Flash Boot, operation mode
Pull-down: UART Download, download mode
7 3.3V Power Supply(3.3V)
8 RXD
1)UART_RXD，Receiving
2)General Purpose Input/Output: GPIO3;
Features
1. Supports 3 modes: AP, STA, and AP+ATA.
2. Improves the concise and efficient AT instructions to make your creation easier.
3. Built-in TR switch, balun, LNA, power amplifier and matching network.
4. Provided with a testing software created by SunFounder which makes it efficient and convenient.
Specifications
Wireless standard: 802.11 b/g/n
Serial/UART baud rate: 115200 bps
Integrated TCP/IP protocol stack
Input power: 3.3V
Dimensions: 25.3 x15.3mm
I/O voltage tolerance: 3.6V Max
Regular operating current draw: ~70mA
Peak operating current draw: ~300mA
Power down leakage current: <10uA
+19.5dBm output in 802.11b mode
Flash memory storage: 1MB (8Mbit)
WiFi security modes: WPA, WPA2
Test
We offer two options for test software: the ESP8266 APP for Android phones and the SerialAssistant For ESP8266 on PC.
ESP8266 APP
1.Download the application at this link: http://wiki.sunfounder.cc/images/1/1a/ESP8266_apk.zip
2.Install the ESP8266 APP on a cell phone running on Android.
3.Connect the circuit