Data Sheet
Table Of Contents
- 1.General Overview
- 1.1.Introduction
- 1.2.Features
- 1.3.Parameters
- 1.4.Ultra Low Power Technology
- 1.5.Major Applications
- 2.Hardware Overview
- 3.Pins and Definitions
- 3.1.GPIO
- 3.2.Secure Digital Input/Output Interface (SDIO)
- 3.3.Serial Peripheral Interface (SPI/HSPI)
- 3.4.Inter-integrated Circuit Interface (I2C)
- 3.5.I2S
- 3.6.Universal Asynchronous Receiver Transmitter (UART)
- 3.7.Pulse-Width Modulation (PWM)
- 3.8.IR Remote Control
- 3.9.ADC (Analog-to-digital Converter)
- 3.10.LED Light and Button
- 4.Firmware & Software Development Kit
- 5.Power Management
- 6.Clock Management
- 8.FCC Warming Statement
- This device complies with part 15 of the FCC Rules
- (1)This device may not cause harmful interference,
- (2)and this device must accept any interference re
- FCC Radiation Exposure Statement:
- This equipment complies with FCC radiation exposur
- Information to the user.
- Note: This equipment has been tested and found to
- -Reorient or relocate the receiving antenna.
- -Increase the separation between the equipment and
- -Connect the equipment into an outlet on a circuit
- -Consult the dealer or an experienced radio/TV tec
- 9.Appendix: QFN32 Package Size
ESP8266 Datasheet
Espressif Systems
Espressif Systems
June1,2015
24
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32
Note: Among the nine interfaces mentioned above, most of them can be multiplexed. Pin
definitions that can be defined is not limited to the eight ones herein mentioned,
customers can self customise the functions of the pins according to their specific
application scenarios. Functions of these pins can be implemented via software
programming and hardware.
Altogether three interfaces have been defined, one is for the button, and the other two is for LED
light. Generally, MTCK is used to control the reset button, GPIO0 is used as an signal to indicate the
WiFi working state, MTDI is used as a signal light to indicate communication between the device and
the server.