Espressif ESP32-S2 Programming Manual page 30

Chapter 1. Get Started
J3
No. Name
1 G
2 TX
3 RX
4 1
5 2
6 42
7 41
8 40
9 39
10 38
11 37
12 36
13 35
14 0
15 45
16 34
17 33
18 21
19 20
20 19
21 G
22 G
Pin Layout
Espressif Systems
Type Function
G Ground
I/O/T U0TXD, GPIO43, CLK_OUT1
I/O/T U0RXD, GPIO44, CLK_OUT2
I/O/T RTC_GPIO1, GPIO1, TOUCH1, ADC1_CH0
I/O/T RTC_GPIO2, GPIO2, TOUCH2, ADC1_CH1
I/O/T MTMS, GPIO42
I/O/T MTDI, GPIO41, CLK_OUT1
I/O/T MTDO, GPIO40, CLK_OUT2
I/O/T MTCK, GPIO39, CLK_OUT3
I/O/T GPIO38, FSPIWP
I/O/T SPIDQS, GPIO37, FSPIQ
I/O/T SPIIO7, GPIO36, FSPICLK
I/O/T SPIIO6, GPIO35, FSPID
I/O/T RTC_GPIO0, GPIO0
I/O/T GPIO45
I/O/T SPIIO5, GPIO34, FSPICS0
I/O/T SPIIO4, GPIO33, FSPIHD
I/O/T RTC_GPIO21, GPIO21
I/O/T RTC_GPIO20, GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+
I/O/T RTC_GPIO19, GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D-
G Ground
G Ground
Fig. 13: ESP32-S2-DevKitC-1 Pin Layout (click to enlarge)
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