1
Overview
Table 2 – cont’d from previous page
Name
No.
Type
Function
2
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
NC
10
—
—
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
NC
15
—
—
GND
16
P
Ground
IO13
17
I/O
GPIO13, ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID,
HS2_DATA3, SD_DATA3, EMAC_RX_ER
NC
18
—
—
NC
19
—
—
NC
20
—
—
NC
21
—
—
NC
22
—
—
NC
23
—
—
IO15
24
I/O
GPIO15, ADC2_CH3, TOUCH3, MTDO, HSPICS0, RTC_GPIO13,
HS2_CMD, SD_CMD, EMAC_RXD3
NC
25
—
—
NC
26
—
—
IO0
27
I/O
GPIO0, ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1,
EMAC_TX_CLK
IO4
28
I/O
GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1,
SD_DATA1, EMAC_TX_ER
IO16
29
I/O
GPIO16, HS1_DATA4, U2RXD, EMAC_CLK_OUT
IO17
30
I/O
GPIO17, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180
IO5
31
I/O
GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK
IO18
32
I/O
GPIO18, VSPICLK, HS1_DATA7
IO19
33
I/O
GPIO19, VSPIQ, U0CTS, EMAC_TXD0
NC
34
—
—
IO21
35
I/O
GPIO21, VSPIHD, EMAC_TX_EN
U0RXD
36
I/O
GPIO3, U0RXD, CLK_OUT2
U0TXD
37
I/O
GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2
IO22
38
I/O
GPIO22, VSPIWP, U0RTS, EMAC_TXD1
IO23
39
I/O
GPIO23, VSPID, HS1_STROBE
GND
40
P
Ground
NC
3
41
—
—
Cont’d on next page
Espressif Systems
6
ESP32-WROOM-DA User Manual v0.5