Espressif ESP8266 Series User Manual

ESP8266EX
1.3.
Pin Definitions
The pin assignments for 32-pin QFN package is illustrated in Figure 1-2.
Figure 1-2: ESP8266EX Pin Assignments
Table 1-2 lists the definitions and functions of each pin.
Package size
QFN32-pin (5 mm x 5 mm)
External interface
N/A
Software
Wi-Fi mode
station / softAP / SoftAP + station
Security
WPA / WPA2
Encryption
WEP / TKIP / AES
Firmware upgrade
UART Download / OTA (via network)
Software
development
SDK for customised development / cloud server development
Network Protocols
IPv4, TCP / UDP / HTTP / FTP
User configuration
AT Instruction Set, Cloud Server, Android/ iOS App
Categories
Items
Parameters
Table 1-2: ESP8266EX Pin Definitions
Pin
Name
Type
Functions
1
VDDA
P
Analog Power 3.0 V ~ 3.6 V
Espressif
/ 3 27
2016.06

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