Data Sheet
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Espressif Systems
ESP8266 Datasheet
2. Hardware Overview
2.1. Pin Definitions
The pin assignments for 32-pin QFN package is illustrated in Fig.2.
Figure 2 Pin Assignments
Table 2 below presents an overview on the general pin attributes and the functions of each pin.
Table 2 Pin Definitions
Pin
Name
Type
Function
1
VDDA
P
Analog Power 3.0 ~3.6V
2
LNA
I/O
RF Antenna Interface. Chip Output Impedance=50Ω
No matching required but we recommend that the π-type
matching network is retained.
3
VDD3P3
P
Amplifier Power 3.0~3.6V
4
VDD3P3
P
Amplifier Power 3.0~3.6V
5
VDD_RTC
P
NC (1.1V)
Espressif Systems / August 1, 2015
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