ESP32-S2-MINI-1

Name: ESP32-S2-MINI-1
Brand: Espressif

EspressifESP32-S2 series

This is a generic Wi-Fi MCU module built around the ESP32-S2 SoC, offering a rich set of peripherals for various IoT applications like smart home and wearable electronics.

Manufacturer guide / datasheet

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Specifications

Operating Voltage: 3.0 ~ 3.6 V
Logic Level: 3.3 V
Clock Speed: 240 MHz
Flash Memory: 4 MB
Psram Memory: 2 MB
Rom Memory: 128 KB
Sram Memory: 320 KB
Rtc Sram Memory: 16 KB
Gpio Count: 37
Wifi Standard: 802.11 b/g/n
Dimensions: 15.4 x 20.0 x 2.4 mm
Antenna Type: On-board PCB antenna
Usb Interface: Full-speed USB OTG
Crystal Oscillator Frequency: 40 MHz
Operating Temperature Range: -40 ~ 85 °C

Pinout

Pin	Name	Functions	Notes
1	GND	GND
2	GND	GND
3	3V3	POWER
4	IO0	GPIO	RTC_GPIO0
5	IO1	GPIOADC	RTC_GPIO1, TOUCH1, ADC1_CH0
6	IO2	GPIOADC	RTC_GPIO2, TOUCH2, ADC1_CH1
7	IO3	GPIOADC	RTC_GPIO3, TOUCH3, ADC1_CH2
8	IO4	GPIOADC	RTC_GPIO4, TOUCH4, ADC1_CH3
9	IO5	GPIOADC	RTC_GPIO5, TOUCH5, ADC1_CH4
10	IO6	GPIOADC	RTC_GPIO6, TOUCH6, ADC1_CH5
11	IO7	GPIOADC	RTC_GPIO7, TOUCH7, ADC1_CH6
12	IO8	GPIOADC	RTC_GPIO8, TOUCH8, ADC1_CH7
13	IO9	GPIOADCSPI	RTC_GPIO9, TOUCH9, ADC1_CH8, FSPIHD
14	IO10	GPIOADCSPI	RTC_GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4
15	IO11	GPIOADCSPI	RTC_GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5
16	IO12	GPIOADCSPI	RTC_GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6
17	IO13	GPIOADCSPI	RTC_GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7
18	IO14	GPIOADCSPI	RTC_GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS
19	IO15	GPIOUARTADC	RTC_GPIO15, U0RTS, ADC2_CH4, XTAL_32K_P
20	IO16	GPIOUARTADC	RTC_GPIO16, U0CTS, ADC2_CH5, XTAL_32K_N
21	IO17	GPIOUARTADC	RTC_GPIO17, U1TXD, ADC2_CH6, DAC_1
22	IO18	GPIOUARTADC	RTC_GPIO18, U1RXD, ADC2_CH7, DAC_2, CLK_OUT3
23	IO19	GPIOUARTADC	RTC_GPIO19, U1RTS, ADC2_CH8, CLK_OUT2, USB_D-
24	IO20	GPIOUARTADC	RTC_GPIO20, U1CTS, ADC2_CH9, CLK_OUT1, USB_D+
25	IO21	GPIO	RTC_GPIO21
26	IO26	GPIOSPI	SPICS1. Used by embedded PSRAM on N4R2/1U-N4R2 modules, cannot be used for other purposes.
27	NC	—	No Connect
28	IO33	GPIOSPI	SPIIO4, FSPIHD
29	IO34	GPIOSPI	SPIIO5, FSPICS0
30	GND	GND
31	IO35	GPIOSPI	SPIIO6, FSPID
32	IO36	GPIOSPI	SPIIO7, FSPICLK
33	IO37	GPIOSPI	SPIDQS, FSPIQ
34	IO38	GPIOSPI	FSPIWP
35	IO39	GPIO	MTCK, CLK_OUT3
36	IO40	GPIO	MTDO, CLK_OUT2
37	IO41	GPIO	MTDI, CLK_OUT1
38	IO42	GPIO	MTMS
39	TXD0	GPIOUART	U0TXD, CLK_OUT1
40	RXD0	GPIOUART	U0RXD, CLK_OUT2
41	IO45	GPIO
42	GND	GND
43	GND	GND
44	IO46	GPIO
45	EN	POWER	Chip enable, active high. Do not leave floating.
46	GND	GND
47	GND	GND
48	GND	GND
49	GND	GND
50	GND	GND
51	GND	GND
52	GND	GND
53	GND	GND
54	GND	GND
55	GND	GND
56	GND	GND
57	GND	GND
58	GND	GND
59	GND	GND
60	GND	GND
61	EPAD	GND	Exposed Pad, typically connected to ground for thermal performance.
62	GND	GND
63	GND	GND
64	GND	GND
65	GND	GND

Interactive pinout

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ESP32-S2 series

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