Chengdu Ebyte Electronic Technology Co.,Ltd.
ESP32-WROOM-32UE User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co.,Ltd.
6
1 P：power supply；I：Input；O：Output；T：can be set to high impedance.
Chart 3- 2 Pin definition list
NC
20
-
See note 1 below the table
NC
21
-
See note 1 below the table
NC
22
-
See note 1 below 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
NC
32
-
-
IO21
33
I/O
GPIO21, VSPIHD, EMAC_TX_EN
RXD0
34
I/O
GPIO3, U0RXD, CLK_OUT2
TXD0
35
I/O
GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2
IO22
36
I/O
GPIO22, VSPIWP, U0RTS, EMAC_TXD1
IO23
37
I/O
GPIO23, VSPID, HS1_STROBE
GND
38
P
Grounded
