ESP32 datasheet(15/64 Pages) ESPRESSIF

15 / 64 page

2.2 Pin Description

Table 1: Pin Description

Name

No.

Type

Function

Analog

VDDA

Analog power supply (2.3 V

∼ 3.6 V)

LNA_IN

I/O

RF input and output

VDD3P3

Analog power supply (2.3 V

∼ 3.6 V)

VDD3P3

Analog power supply (2.3 V

∼ 3.6 V)

VDD3P3_RTC

SENSOR_VP

GPIO36, ADC1_CH0,

RTC_GPIO0

SENSOR_CAPP

GPIO37, ADC1_CH1,

RTC_GPIO1

SENSOR_CAPN

GPIO38, ADC1_CH2,

RTC_GPIO2

SENSOR_VN

GPIO39, ADC1_CH3,

RTC_GPIO3

CHIP_PU

High: On; enables the chip

Low: Off; the chip powers off

Note: Do not leave the CHIP_PU pin floating.

VDET_1

GPIO34, ADC1_CH6,

RTC_GPIO4

VDET_2

GPIO35, ADC1_CH7,

RTC_GPIO5

32K_XP

I/O

GPIO32, ADC1_CH4,

RTC_GPIO9,

TOUCH9,

32K_XP (32.768 kHz crystal oscillator input)

32K_XN

I/O

GPIO33, ADC1_CH5,

RTC_GPIO8,

TOUCH8,

32K_XN (32.768 kHz crystal oscillator output)

GPIO25

I/O

GPIO25, ADC2_CH8,

RTC_GPIO6,

DAC_1,

EMAC_RXD0

GPIO26

I/O

GPIO26, ADC2_CH9,

RTC_GPIO7,

DAC_2,

EMAC_RXD1

GPIO27

I/O

GPIO27, ADC2_CH7,

RTC_GPIO17, TOUCH7,

EMAC_RX_DV

MTMS

I/O

GPIO14, ADC2_CH6,

RTC_GPIO16, TOUCH6,

EMAC_TXD2,

HSPICLK,

HS2_CLK,

SD_CLK,

MTMS

MTDI

I/O

GPIO12, ADC2_CH5,

RTC_GPIO15, TOUCH5,

EMAC_TXD3,

HSPIQ,

HS2_DATA2, SD_DATA2,

MTDI

VDD3P3_RTC

Input power supply for RTC IO (2.3 V

∼ 3.6 V)

MTCK

I/O

GPIO13, ADC2_CH4,

RTC_GPIO14, TOUCH4,

EMAC_RX_ER,

HSPID,

HS2_DATA3, SD_DATA3,

MTCK

MTDO

I/O

GPIO15, ADC2_CH3,

RTC_GPIO13, TOUCH3,

EMAC_RXD3,

HSPICS0,

HS2_CMD,

SD_CMD,

MTDO

ESP32 Datasheet(PDF) 15 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

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