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ESP32-S2-Saola-1
Espressif · ESP32-S2
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Showing 42 of 42 pins
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
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Mapped source · ESP32-S2-Saola-1 header pinout (Espressif)Official- Official Espressif J2/J3 header tables for the ESP32-S2-Saola-1 v1.2.
- GPIO is 3.3 V; GPIO26 and GPIO32-GPIO37 are used for SPI flash/PSRAM on common WROVER module variants.
- GPIO0, GPIO45, and GPIO46 are strapping pins; GPIO19/GPIO20 carry native USB D-/D+; GPIO18 drives the onboard RGB LED.
All 42 pins
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| 1 | Power | 3V3 | ||
| 2 | System | BOOT / Strapping | ||
| 3 | ADC | ADC1_CH0 / TOUCH1 | ||
| 4 | ADC | ADC1_CH1 / TOUCH2 | ||
| 5 | ADC | ADC1_CH2 / TOUCH3 | ||
| 6 | ADC | ADC1_CH3 / TOUCH4 | ||
| 7 | ADC | ADC1_CH4 / TOUCH5 | ||
| 8 | ADC | ADC1_CH5 / TOUCH6 | ||
| 9 | ADC | ADC1_CH6 / TOUCH7 | ||
| 10 | ADC | ADC1_CH7 / TOUCH8 | ||
| 11 | ADC | ADC1_CH8 / TOUCH9 | ||
| 12 | ADC | ADC1_CH9 / TOUCH10 | ||
| 13 | ADC | ADC2_CH0 / TOUCH11 | ||
| 14 | ADC | ADC2_CH1 / TOUCH12 | ||
| 15 | ADC | ADC2_CH2 / TOUCH13 | ||
| 16 | ADC | ADC2_CH3 / TOUCH14 | ||
| 17 | ADC | ADC2_CH4 / XTAL_32K_P | ||
| 18 | ADC | ADC2_CH5 / XTAL_32K_N | ||
| 19 | DAC | DAC1 / ADC2_CH6 | ||
| 20 | Power | 5V | ||
| 21 | Ground | GND | ||
| 22 | Ground | GND | ||
| 23 | System | CHIP_PU | ||
| 24 | System | Strapping | ||
| 25 | System | Strapping | ||
| 26 | UART | UART | U0RXD | |
| 27 | UART | UART | U0TXD | |
| 28 | Debug | JTAG | MTMS | |
| 29 | Debug | JTAG | MTDI | |
| 30 | Debug | JTAG | MTDO | |
| 31 | Debug | JTAG | MTCK | |
| 32 | GPIO | |||
| 33 | GPIO | |||
| 34 | GPIO | |||
| 35 | GPIO | |||
| 36 | GPIO | |||
| 37 | GPIO | |||
| 38 | GPIO | |||
| 39 | GPIO | |||
| 40 | Alt | USB_D+ / ADC2_CH9 | ||
| 41 | Alt | USB_D- / ADC2_CH8 | ||
| 42 | Alt | RGB LED / DAC2 / ADC2_CH7 |