ESP32 datasheet(16/64 Pages) ESPRESSIF

16 / 64 page

Name

No.

Type

Function

GPIO2

I/O

GPIO2,

ADC2_CH2,

RTC_GPIO12, TOUCH2,

HSPIWP,

HS2_DATA0, SD_DATA0

GPIO0

I/O

GPIO0,

ADC2_CH1,

RTC_GPIO11, TOUCH1,

EMAC_TX_CLK, CLK_OUT1,

GPIO4

I/O

GPIO4,

ADC2_CH0,

RTC_GPIO10, TOUCH0,

EMAC_TX_ER,

HSPIHD,

HS2_DATA1, SD_DATA1

VDD_SDIO

GPIO16

I/O

GPIO16, HS1_DATA4,

U2RXD,

EMAC_CLK_OUT

VDD_SDIO

Output power supply: 1.8 V or the same voltage as VDD3P3_RTC

GPIO17

I/O

GPIO17, HS1_DATA5,

U2TXD,

EMAC_CLK_OUT_180

SD_DATA_2

I/O

GPIO9,

HS1_DATA2,

U1RXD,

SD_DATA2,

SPIHD

SD_DATA_3

I/O

GPIO10, HS1_DATA3,

U1TXD,

SD_DATA3,

SPIWP

SD_CMD

I/O

GPIO11, HS1_CMD,

U1RTS,

SD_CMD,

SPICS0

SD_CLK

I/O

GPIO6,

HS1_CLK,

U1CTS,

SD_CLK,

SPICLK

SD_DATA_0

I/O

GPIO7,

HS1_DATA0,

U2RTS,

SD_DATA0,

SPIQ

SD_DATA_1

I/O

GPIO8,

HS1_DATA1,

U2CTS,

SD_DATA1,

SPID

VDD3P3_CPU

GPIO5

I/O

GPIO5,

HS1_DATA6,

VSPICS0,

EMAC_RX_CLK

GPIO18

I/O

GPIO18, HS1_DATA7,

VSPICLK

GPIO23

I/O

GPIO23, HS1_STROBE, VSPID

VDD3P3_CPU

Input power supply for CPU IO (1.8 V

∼ 3.6 V)

GPIO19

I/O

GPIO19, U0CTS,

VSPIQ,

EMAC_TXD0

GPIO22

I/O

GPIO22, U0RTS,

VSPIWP,

EMAC_TXD1

U0RXD

I/O

GPIO3,

U0RXD,

CLK_OUT2

U0TXD

I/O

GPIO1,

U0TXD,

CLK_OUT3,

EMAC_RXD2

GPIO21

I/O

GPIO21,

VSPIHD,

EMAC_TX_EN

Analog

VDDA

Analog power supply (2.3 V

∼ 3.6 V)

XTAL_N

External crystal output

XTAL_P

External crystal input

VDDA

Analog power supply (2.3 V

∼ 3.6 V)

CAP2

Connects to a 3 nF capacitor and 20 kΩ resistor in parallel to CAP1

ESP32 Datasheet(PDF) 16 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

ESP32 Datasheet(HTML) 16 Page - ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD.

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