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ESP8266EX Beginner's Guide
1.2. Hardware Overview
1.2.1. Pin Definition
!
Pin
Name
1 VDDA
2 LNA
3 VDD3P3
4 VDD3P3
5 VDD_RTC
!
12
|
P a g e
"
Figure 2: ESP8266EX Pin Definition Diagram
Type
P
Analog Power 3.0 ~3.6V
I/O
RF Antenna Interface，Chip Output Impedance=50 Ω
No matching required but we recommend that the π-
type matching network is retained.
P
Amplifier Power 3.0~3.6V
P
Amplifier Power 3.0~3.6V
P
NC(1.1V)
"
Function
September 17, 2014
Espressif
Systems
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