ESP32-DevKitC-1๏ƒ

The ESP32-DevKitC-1 development board is one of Espressifโ€™s official boards. This board is based on the ESP32-WROVER-E module, with the ESP32 as the core.

Specifications๏ƒ

  • Wi-Fi 802.11b/g/n (802.11n up to 150 Mbps)

  • Bluetooth v4.2 BR/EDR and BLE specification

  • Built around ESP32 series of SoCs

  • Integrated 4 MB SPI flash

  • Integrated 8 MB PSRAM

  • Peripherals

    • SD card

    • UART

    • SPI

    • SDIO

    • I2C

    • LED PWM

    • Motor PWM

    • I2S

    • IR

    • Pulse Counter

    • GPIO

    • Capacitive Touch Sensor

    • ADC

    • DAC

    • Two-Wire Automotive Interface (TWAIยฎ, compatible with ISO11898-1)

  • PCB antenna or external antenna connector

Header Block๏ƒ

Note

Not all of the chip pins are exposed to the pin headers.

J1๏ƒ

No.

Name

Type

Function

1

3V3

P

3.3 V power supply

2

EN

I

CHIP_PU, Reset

3

IO36

I

GPIO36, ADC1_CH0, S_VP

4

IO39

I

GPIO39, ADC1_CH3, S_VN

5

IO34

I

GPIO34, ADC1_CH6, VDET_1

6

IO35

I

GPIO35, ADC1_CH7, VDET_2

7

IO32

I/O

GPIO32, ADC1_CH4, TOUCH_CH9, XTAL_32K_P

8

IO33

I/O

GPIO33, ADC1_CH5, TOUCH_CH8, XTAL_32K_N

9

IO25

I/O

GPIO25, ADC1_CH8, DAC_1

10

IO26

I/O

GPIO26, ADC2_CH9, DAC_2

11

IO27

I/O

GPIO27, ADC2_CH7, TOUCH_CH7

12

IO14

I/O

GPIO14, ADC2_CH6, TOUCH_CH6, MTMS

13

IO12

I/O

GPIO12, ADC2_CH5, TOUCH_CH5, MTDI

14

GND

G

Ground

15

IO13

I/O

GPIO13, ADC2_CH4, TOUCH_CH4, MTCK

16

IO9

I/O

GPIO9, D2

17

IO10

I/O

GPIO10, D3

18

IO11

I/O

GPIO11, CMD

19

5V0

P

5 V power supply

J3๏ƒ

No.

Name

Type

Function

1

GND

G

Ground

2

IO23

I/O

GPIO23

3

IO22

I/O

GPIO22

4

IO1

I/O

GPIO1, U0TXD

5

IO3

I/O

GPIO3, U0RXD

6

IO21

I/O

GPIO21

7

GND

G

Ground

8

IO19

I/O

GPIO19

9

IO18

I/O

GPIO18

10

IO5

I/O

GPIO5

11

IO17

I/O

GPIO17

12

IO16

I/O

GPIO16

13

IO4

I/O

GPIO4, ADC2_CH0, TOUCH_CH0

14

IO0

I/O

GPIO0, ADC2_CH1, TOUCH_CH1, Boot

16

IO2

I/O

GPIO2, ADC2_CH2, TOUCH_CH2

17

IO15

I/O

GPIO15, ADC2_CH3, TOUCH_CH3, MTDO

17

IO8

I/O

GPIO8, D1

18

IO7

I/O

GPIO7, D0

19

IO6

I/O

GPIO6, SCK

P: Power supply; I: Input; O: Output; T: High impedance.

Pin Layout๏ƒ

ESP32-DevKitC-1 (click to enlarge)

Strapping Pins๏ƒ

Some of the GPIOโ€™s have important features during the booting process. Here is the list of the strapping pins on the ESP32.

GPIO

Default

Function

Pull-up

Pull-down

IO12

Pull-down

Voltage of Internal LDO (VDD_SDIO)

1.8 V

3.3 V

IO0

Pull-up

Booting Mode

SPI Boot

Download Boot

IO2

Pull-down

Booting Mode

Donโ€™t Care

Download Boot

IO15

Pull-up

Enabling/Disabling Log Print During Booting and Timing of SDIO Slave

U0TXD Active

U0TXD Silent

IO5

Pull-up

Timing of SDIO Slave

See ESP32

See ESP32

Be aware when choosing which pins to use.

Restricted Usage GPIOโ€™s๏ƒ

Some of the GPIOโ€™s are used for the external flash and PSRAM. These GPIOโ€™s cannot be used:

GPIO

Shared Function

IO6

External SPI Flash

IO7

External SPI Flash

IO8

External SPI Flash

IO9

External SPI Flash

IO10

External SPI Flash

IO11

External SPI Flash

Other GPIOโ€™s are INPUT ONLY and cannot be used as output pin:

GPIO

Function

IO34

GPIO34, ADC1_CH6, VDET_1

IO35

GPIO35, ADC1_CH7, VDET_2

IO36

GPIO36, ADC1_CH0, S_VP

IO39

GPIO39, ADC1_CH3, S_VN

Resources๏ƒ