Data Sheet

ESP-12S User Manual

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)