ESP32-DevKitC V4 pinout
All 38 pins of the ESP32-DevKitC V4, each mapped to the ESP32-D0WD-V pad it routes to, with its functions and — for 33 pins — the electrical limits from the chip datasheet. Every number cites its page and table.
38 pins documented33 with electrical limits1 power out1 control32 gpio3 ground1 power incomplete pinout
Pin table
Markdown · JSONESP32-DevKitC V4 pins, functions and electrical limits
| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant | Abs max | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3V3 | J2 · 1 | power out | power_out | -0.3–3.6 V | p.41 table 41_2 | ||||||||
| EN | J2 · 2 | control | CHIP_PU | en | 2.475–3.6 V | ≤ 0.6 V | no | ESP32-D0WD-V3 datasheet p.52 table 52_1 | |||||
| VP | J2 · 3 | gpio | GPIO36 | GPIO36, ADC1_CH0, S_VP, RTC_GPIO0 | 2.475–3.6 V | -0.3–0.825 V | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.17 |
| VN | J2 · 4 | gpio | GPIO39 | GPIO39, ADC1_CH3, S_VN, RTC_GPIO3 | 2.475–3.6 V | -0.3–0.825 V | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.17 |
| IO34 | J2 · 5 | gpio | GPIO34 | GPIO34, ADC1_CH6, VDET_1, RTC_GPIO4 | 2.475–3.6 V | -0.3–0.825 V | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.17 |
| IO35 | J2 · 6 | gpio | GPIO35 | GPIO35, ADC1_CH7, VDET_2, RTC_GPIO5 | 2.475–3.6 V | -0.3–0.825 V | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | input-only pin (GPIO34–39 have no output driver) | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.17 |
| IO32 | J2 · 7 | gpio | GPIO32 | GPIO32, ADC1_CH4, TOUCH_CH9, XTAL_32K_P, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO9, TOUCH9, 32K_XP (32.768 kHz crystal oscillator input), GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO33 | J2 · 8 | gpio | GPIO33 | GPIO33, ADC1_CH5, TOUCH_CH8, XTAL_32K_N, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO8, TOUCH8, 32K_XN (32.768 kHz crystal oscillator output), GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO25 | J2 · 9 | gpio | GPIO25 | GPIO25, ADC2_CH8, DAC_1, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO6, EMAC_RXD0, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO26 | J2 · 10 | gpio | GPIO26 | GPIO26, ADC2_CH9, DAC_2, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO7, EMAC_RXD1, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO27 | J2 · 11 | gpio | GPIO27 | GPIO27, ADC2_CH7, TOUCH_CH7, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO17, TOUCH7, EMAC_RX_DV, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO14 | J2 · 12 | gpio | GPIO14 | GPIO14, ADC2_CH6, TOUCH_CH6, MTMS, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO16, TOUCH6, EMAC_TXD2, HSPICLK, HS2_CLK, SD_CLK, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO12 | J2 · 13 | gpio | GPIO12 | GPIO12, ADC2_CH5, TOUCH_CH5, MTDI, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO15, TOUCH5, EMAC_TXD3, HSPIQ, HS2_DATA2, SD_DATA2, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| GND | J2 · 14 | ground | ground | ||||||||||
| IO13 | J2 · 15 | gpio | GPIO13 | GPIO13, ADC2_CH4, TOUCH_CH4, MTCK, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO14, TOUCH4, EMAC_RX_ER, HSPID, HS2_DATA3, SD_DATA3, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| D2 | J2 · 16 | gpio | GPIO9 | GPIO9, D2, HS1_DATA2, U1RXD, SD_DATA2, SPIHD, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 20 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| D3 | J2 · 17 | gpio | GPIO10 | GPIO10, D3, HS1_DATA3, U1TXD, SD_DATA3, SPIWP, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 20 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| CMD | J2 · 18 | gpio | GPIO11 | GPIO11, CMD, HS1_CMD, U1RTS, SD_CMD, SPICS0, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 20 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| 5V | J2 · 19 | power in | power_in | p.7 table 7_1 | |||||||||
| GND | J3 · 1 | ground | ground | ||||||||||
| IO23 | J3 · 2 | gpio | GPIO23 | GPIO23, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, HS1_STROBE, VSPID, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO22 | J3 · 3 | gpio | GPIO22 | GPIO22, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, U0RTS, VSPIWP, EMAC_TXD1, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| TX | J3 · 4 | gpio | GPIO1 | GPIO1, U0TXD, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, CLK_OUT3, EMAC_RXD2, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| RX | J3 · 5 | gpio | GPIO3 | GPIO3, U0RXD, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, CLK_OUT2, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO21 | J3 · 6 | gpio | GPIO21 | GPIO21, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, VSPIHD, EMAC_TX_EN, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| GND | J3 · 7 | ground | ground | ||||||||||
| IO19 | J3 · 8 | gpio | GPIO19 | GPIO19, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, U0CTS, VSPIQ, EMAC_TXD0, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO18 | J3 · 9 | gpio | GPIO18 | GPIO18, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, HS1_DATA7, VSPICLK, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO5 | J3 · 10 | gpio | GPIO5 | GPIO5, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, HS1_DATA6, VSPICS0, EMAC_RX_CLK, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO17 | J3 · 11 | gpio | GPIO17 | GPIO17, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 20 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO16 | J3 · 12 | gpio | GPIO16 | GPIO16, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, HS1_DATA4, U2RXD, EMAC_CLK_OUT, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 20 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO4 | J3 · 13 | gpio | GPIO4 | GPIO4, ADC2_CH0, TOUCH_CH0, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO10, TOUCH0, EMAC_TX_ER, HSPIHD, HS2_DATA1, SD_DATA1, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO0 | J3 · 14 | gpio | GPIO0 | GPIO0, ADC2_CH1, TOUCH_CH1, Boot, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO11, TOUCH1, EMAC_TX_CLK, CLK_OUT1, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO2 | J3 · 15 | gpio | GPIO2 | GPIO2, ADC2_CH2, TOUCH_CH2, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO12, TOUCH2, HSPIWP, HS2_DATA0, SD_DATA0, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| IO15 | J3 · 16 | gpio | GPIO15 | GPIO15, ADC2_CH3, TOUCH_CH3, MTDO, PWM (LEDC / MCPWM via GPIO matrix), UART / I2C / SPI / I2S / RMT / PCNT / TWAI via GPIO matrix, RTC_GPIO13, TOUCH3, EMAC_RXD3, HSPICS0, HS2_CMD, SD_CMD, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 40 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| D1 | J3 · 17 | gpio | GPIO8 | GPIO8, D1, HS1_DATA1, U2CTS, SD_DATA1, SPID, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 20 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| D0 | J3 · 18 | gpio | GPIO7 | GPIO7, D0, HS1_DATA0, U2RTS, SD_DATA0, SPIQ, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 20 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
| CLK | J3 · 19 | gpio | GPIO6 | GPIO6, CLK, HS1_CLK, U1CTS, SD_CLK, SPICLK, GPIO matrix (UART/I2C/I2S/SPI/LEDC PWM/MCPWM/RMT/PCNT/TWAI routable) | 2.475–3.6 V | -0.3–0.825 V | ≥ 2.64 V | ≤ 0.33 V | 20 mA typ | 28 mA typ | no | -0.3–3.6 V | ESP32-D0WD-V3 datasheet p.52 table 52_1 |
Answers from the record
ESP32-DevKitC V4 pinout FAQ
What microcontroller does the ESP32-DevKitC V4 use?
The ESP32-DevKitC V4 is built around the ESP32-D0WD-V, alongside ESP32-WROOM-32E, CP2102N-A02-GQFN28, AMS1117-3.3, BAT760-7.
How many GPIO pins does the ESP32-DevKitC V4 have?
32 GPIO pins are exposed. Xirkit documents 38 board pins, 33 of them with pin-level electrical limits.
Are the ESP32-DevKitC V4 I/O pins 5 V tolerant?
No. The I/O pins are not 5 V tolerant — they run at 3.3 V logic; use a level shifter for 5 V signals. Input-high threshold: 2.475–3.6 V.
How much current can a ESP32-DevKitC V4 GPIO pin source?
Documented output-high current per pin: input-only pin (GPIO34–39 have no output driver). Values are traced to the chip datasheet; see the pinout table for per-pin limits and conditions.
What voltage powers the ESP32-DevKitC V4?
Supply range 5–5 V. Power inputs: 5V.
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