ESP32-S2 Pinout Guide

Complete reference for the ESP32-S2 — USB OTG, single-core, no Bluetooth.

The ESP32-S2 is a single-core Xtensa LX7 chip at 240 MHz with 43 GPIO pins and native USB OTG. Unlike the classic ESP32, it has no Bluetooth but adds native USB support and enhanced security features.

Key Specs

ArchitectureXtensa LX7, single-core, 240 MHz
GPIO Pins43
ADC20 channels, 12-bit
Wi-Fi✅ 2.4 GHz
Bluetooth❌ Not available
USB✅ Native USB OTG
DAC❌ Not available

Strapping Pins

ESP32-S2 strapping pins: GPIO0, GPIO1, GPIO2, GPIO3. These control boot mode and flash voltage.

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