Pin Mode; Antenna Interface - Ai-Thinker Technology ESP-12F User Manual

ESP-12F User Manual
IO15 (I2SO_BCK );
IO3 (I2SO_DATA);
IO2 (I2SO_WS ).

Pin Mode

2.2.
Mode
UART
Flash Boot

Antenna interface

2.3.
ESP-12F
Modules through the IPEX interface to connect to external antenna.
The antenna must be in line with the 802.11g/802.11b IEEE standard, and the antenna parameters are shown in
the following table：
Rating
Frequency range
Impedance
Shenzhen Ai-Thinker Technology Co., Ltd
I2S Output:：
Table 4 Pin Mode
GPIO15
low
low
Table 5 Antenna parameters
GPIO0
low
high
2.4~2.4825GHz
http://www.ai-thinker.com
GPIO2
high
high
Value
50Ω
8