This product is discontinued and no longer available.

ESP32-S2 - 7x7mm Wi-Fi Chip

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Manufacturer: Discontinued

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Product Information

Product Description

Minimum Quantity Required: 10 chips.

Authorized North America Distributor Stamp

The ESP32-S2 is a low-power, Wi-Fi SoC solution for Internet of Things (IoT). The chip is a single-core Xtensa® 32-bit LX7 CPU with a full-speed USB OTG and touch sensor pins.

This SoC is ideal for IoT applications that do not require Bluetooth. It is fully compliant with IEEE 802.11 b/g/n protocol and offers state-of-the-art RF performance.

Common Applications Include:

  • Wearable electronics
  • Smart home products
  • Lights
  • Wi-Fi bridges
  • Medical and environmental monitoring

Compare ESP32 chip series.


  • IEEE 802.11 b/g/n-compliant
  • Supports 20 MHz, 40 MHz bandwidth in 2.4 GHz band
  • Single-core 32-bit LX7 microprocessor
  • 16 KB SRAM in RTC
  • Secure boot and flash encryption

Documents and Drivers


ESP32-S2 Datasheet

ESP32-S2 Technical Reference Manual

ESP32-S2 Hardware Design Guidelines


Chip Package

QFN56 7x7 mm


  • Infrared Remote Controller
  • DMA controllers
  • PID Controller
  • Efuse Controller
  • Media Access Controller (MAC)
  • Pulse Width Modulation (PWM) controller


Single core


Xtensa® 32-bit LX7 microprocessors


7.0 x 7.0 mm


  • 4 x SPI, 1 x I2S, 2 x I2C, 2 x UART, RMT (TX/RX)
  • LED PWM (up to 8 channels)
  • 2 x 12-bit SAR ADC (up to 20 channels), 2 x 8-bit DAC
  • 14 x touch sensing IOs


  • 128 KByte ROM
  • 320 KByte SRAM
  • 16 KB SRAM in RTC
  • SPI/QSPI/OSPI supports multiple flash & external RAM chips




QFN56 package

Power Supply

2.8 V to 3.6 V


  • Wi-Fi: 802.11 b/g/n/d/e/i/k/r (802.11n up to 150 Mbps)
  • Wi-Fi: A-MPDU and A-MSDU aggregation and 0.4 guard interval support
  • Network: IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT


  • 1x Temperature Sensor
  • 1x Touch Sensor

Temperature Range

  • Sensor: -20°C to +110°C (-4º to 230ºF)
  • Operating: -40°C to +125°C (-40º to 257ºF)
  • Storage: -40ºC to 150ºC (-40º to 302ºF)


4 General-Purpose Timers

Watchdog Timers


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