Data Sheet

3 Pin Definitions
Table 2: Pin Definitions
Name No. Type Function
GND 1 P Ground
3V3 2 P Power supply
EN 3 I
High: On; enables the chip
Low: Off; the chip powers off
Note: Do not leave the pin floating.
SENSOR_VP 4 I GPIO36, ADC1_CH0, RTC_GPIO0
SENSOR_VN 5 I GPIO39, ADC1_CH3, RTC_GPIO3
IO34 6 I GPIO34, ADC1_CH6, RTC_GPIO4
IO35 7 I GPIO35, ADC1_CH7, RTC_GPIO5
IO32 8 I/O
GPIO32, XTAL_32K_P (32.768 kHz crystal oscillator input), ADC1_CH4,
TOUCH9, RTC_GPIO9
IO33 9 I/O
GPIO33, XTAL_32K_N (32.768 kHz crystal oscillator output),
ADC1_CH5, TOUCH8, RTC_GPIO8
IO25 10 I/O GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6, EMAC_RXD0
IO26 11 I/O GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1
IO27 12 I/O GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17, EMAC_RX_DV
IO14 13 I/O
GPIO14, ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS, HSPICLK,
HS2_CLK, SD_CLK, EMAC_TXD2
IO12 14 I/O
GPIO12, ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI, HSPIQ,
HS2_DATA2, SD_DATA2, EMAC_TXD3
GND 15 P Ground
IO13 16 I/O
GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID,
HS2_DATA3, SD_DATA3, EMAC_RX_ER
NC 17 - See note 1 under the table.
NC 18 - See note 1 under the table.
NC 19 - See note 1 under the table.
NC 20 - See note 1 under the table.
NC 21 - See note 1 under the table.
NC 22 - See note 1 under the table.
IO15 23 I/O
GPIO15, ADC2_CH3, TOUCH3, MTDO, HSPICS0, RTC_GPIO13,
HS2_CMD, SD_CMD, EMAC_RXD3
IO2 24 I/O
GPIO2, ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP, HS2_DATA0,
SD_DATA0
IO0 25 I/O
GPIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1,
EMAC_TX_CLK
IO4 26 I/O
GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1,
SD_DATA1, EMAC_TX_ER
IO16 27 I/O GPIO16, HS1_DATA4, U2RXD, EMAC_CLK_OUT
IO17 28 I/O GPIO17, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180
IO5 29 I/O GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK
IO18 30 I/O GPIO18, VSPICLK, HS1_DATA7
IO19 31 I/O GPIO19, VSPIQ, U0CTS, EMAC_TXD0
Espressif Systems 11
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ESP32-WROOM-32E & ESP32-WROOM-32UE Datasheet v1.2