User's Manual

ESP-12S User Manual
Shenzhen Ai-Thinker Technology Co., Ltd http://www.ai-thinker.com
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2. Pin Descriptions
There are altogether 16 pin counts, the definitions of which are described in Table 2 below.
Figure 2 ESP-12S pinout
Table 2 ESP-12S pin description
Pin number
Pin name
function
1
RST
Reset module
2
ADC
A/d conversion result. Input voltage range 0~1V, value range: 0~1024
3
EN
Chip enable pin. Active high
4
GPIO16
GPIO16; can be used to wake up the chipset from deep sleep mode
5
GPIO14
GPIO14; HSPI_CLK
6
GPIO12
GPIO12; HSPI_MISO
7
GPIO13
GPIO13; HSPI_MOSI; UART0_CTS
8
VCC
3.3V power supply (VDD)