DFRobot ESP32-S2 Wi-Fi® Modules (PCB Antenna)

DFRobot ESP32-S2 Wi-Fi^® Modules (PCB Antenna) are generic Wi-Fi MCU modules that feature rich peripherals and high performance. These modules feature an ESP32-S2 chip that is based on the Xtensa^® 32-bit LX7 CPU and can operate at up to 240MHz. The ULP co-processor can run while the chip is in sleep mode (CPU powered down). This allows these modules to be used to monitor the state change of peripheral devices or detect if an analog quantity exceeds the preset threshold. The ESP32-S2 modules feature peripheral interfaces including SPI, I²S, UART, I²C, LED, PWM, LCD interface, camera interface, ADC, DAC, touch sensor, temperature sensor, and 43 GPIOs.

The ESP32-S2 includes a Wi-Fi subsystem that integrates a Wi-Fi MAC, Wi-Fi radio and baseband, RF switch, RF balun, power amplifier, and Low Noise Amplifier (LNA). These chips also include a full-speed USB On-The-Go (OTG) interface to enable USB communication. The ESP32-S2 integrates advanced calibration circuitries that allow it to dynamically adjust itself to remove external circuit imperfections or adjust to changes in external conditions. This chip is fully compliant with the IEEE 802.11b/g/n protocol and offers a complete Wi-Fi solution.

The ESP32-S2 modules operate at the 3V to 3.6V voltage range and –40°C to 85°C operating temperature range. Typical applications include the Internet of Things (IoT), wearable electronics, and smart homes.

Features

MCU:
- Built-in ESP32-S2 chip, Xtensa^® single-core 32bit LX7 microcontroller, and up to 240MHz
- Support multiple low-power modes:
  - Fine-grained clock gating, dynamic voltage, and frequency scaling
- Security:
  - eFuse, secure boot, flash encryption, digital signature, integrated AES, SHA, and RSA algorithms
- 128KB ROM
- 320KB SRAM
- 16KB RTC SRAM
Wi-Fi:
- 802.11 b/g/n
- Up to 150Mbps data rate
- TX/RX A-MPDU and RX A-MSDU
- 0.4µs guard interval
- 2412MHz to 2484MHz center frequency range of the operating channel

Hardware:
- Port:
  - GPIO, SPI, UART, I²C, I²S, LCD interface, camera interface, IR, pulse counter, LED, PWM, USB1.1, ADC, DAC, capacitive touch sensor, and temperature sensor
Certification:
- RoHS/REACH
- RF certification:
  - FCC/CE-RED/SRRC
Test
- HTOL/HTSL/uHAST/TCT/ESD

Specifications

40MHz oscillator
4MB SPI flash
3V to 3.6V operating voltage range
–40°C to 85°C operating temperature range
ESP32-S2 SOLO:
- 38 pins
- 18mm x 25.5mm x 3.1mm dimensions

ESP32-S2 WROOM and ESP32-S2 WROVER:
- 42 pins
- 18mm x 31mm x 3.3mm dimensions

Applications

Internet of Things (IoT)
Wearable electronics
Smart home
ESP32-S2 WROOM and ESP32-S2 WROVER:
- Generic pow-power IoT sensor hub
- Generic low-power IoT data loggers
- Cameras for video streaming
- Over-The-Top (OTT) devices
- USB devices
- Speech recognition
- Image recognition
- Mesh network
- Smart building
- Industrial automation
- Smart agriculture
- Audio applications
- Health care applications
- Wi-Fi-enabled toys
- Wearable electronics
- Retail and catering applications
- Smart POS machines