Espressif Systems ESP32-S2-WROOM User Manual page 6

2. Pin Definitions
Name No.
GND 1
3V3 2
IO0 3
IO1 4
IO2 5
IO3 6
IO4 7
IO5 8
IO6 9
IO7 10
IO8 11
IO9 12
IO10 13
IO11 14
IO12 15
IO13 16
IO14 17
IO15 18
IO16 19
IO17 20
IO18 21
IO19 22
IO20 23
IO21 24
IO26 25
GND 26
IO33 27
IO34 28
IO35 29
IO36 30
IO37 31
IO38 32
IO39 33
IO40 34
IO41 35
IO42 36
TXD0 37
RXD0 38
IO45 39
IO46 40
Espressif Systems
Table 2: Pin Definitions
Type Function
P Ground
P Power supply
I/O/T RTC_GPIO0, GPIO0
I/O/T RTC_GPIO1, GPIO1, TOUCH1, ADC1_CH0
I/O/T RTC_GPIO2, GPIO2, TOUCH2, ADC1_CH1
I/O/T RTC_GPIO3, GPIO3, TOUCH3, ADC1_CH2
I/O/T RTC_GPIO4, GPIO4, TOUCH4, ADC1_CH3
I/O/T RTC_GPIO5, GPIO5, TOUCH5, ADC1_CH4
I/O/T RTC_GPIO6, GPIO6, TOUCH6, ADC1_CH5
I/O/T RTC_GPIO7, GPIO7, TOUCH7, ADC1_CH6
I/O/T RTC_GPIO8, GPIO8, TOUCH8, ADC1_CH7
I/O/T RTC_GPIO9, GPIO9, TOUCH9, ADC1_CH8, FSPIHD
I/O/T RTC_GPIO10, GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4
I/O/T RTC_GPIO11, GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5
I/O/T RTC_GPIO12, GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6
I/O/T RTC_GPIO13, GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7
I/O/T RTC_GPIO14, GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS
I/O/T RTC_GPIO15, GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P
I/O/T RTC_GPIO16, GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N
I/O/T RTC_GPIO17, GPIO17, U1TXD, ADC2_CH6, DAC_1
I/O/T RTC_GPIO18, GPIO18, U1RXD, ADC2_CH7, DAC_2, CLK_OUT3
I/O/T RTC_GPIO19, GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D-
I/O/T RTC_GPIO20, GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+
I/O/T RTC_GPIO21, GPIO21
I/O/T SPICS1, GPIO26
P Ground
I/O/T SPIIO4, GPIO33, FSPIHD
I/O/T SPIIO5, GPIO34, FSPICS0
I/O/T SPIIO6, GPIO35, FSPID
I/O/T SPIIO7, GPIO36, FSPICLK
I/O/T SPIDQS, GPIO37, FSPIQ
I/O/T GPIO38, FSPIWP
I/O/T MTCK, GPIO39, CLK_OUT3
I/O/T MTDO, GPIO40, CLK_OUT2
I/O/T MTDI, GPIO41, CLK_OUT1
I/O/T MTMS, GPIO42
I/O/T U0TXD, GPIO43, CLK_OUT1
I/O/T U0RXD, GPIO44, CLK_OUT2
I/O/T GPIO45
I GPIO46
Submit Documentation Feedback
5
ESP32-S2-WROOM & ESP32-S2-WROOM-I User Manual V0.5