The ESP32-S3-WROOM-2 is a versatile Wi-Fi + Bluetooth Low Energy (BLE) MCU module with extensive peripheral interfaces and powerful neural network processing and signal processing capabilities. It is specifically designed for the AI and AIoT markets, making it suitable for various application scenarios such as wake word detection and voice command recognition, facial detection and recognition, smart home devices, smart appliances, smart control panels, and smart speakers.
The ESP32-S3-WROOM-2 features a PCB onboard antenna and is equipped with the ESP32-S3R8V chip, with options for 16 MB or 32 MB flash and 8 MB PSRAM.
Note: For the R8 series modules (which come with built-in Octal SPI PSRAM), if the PSRAM ECC (Error Correction Code) feature is enabled, the maximum operating temperature of the module can be increased to 85°C. However, enabling ECC will reduce the available PSRAM capacity by 1/16.
Features
CPU and On-chip Memory
- Built-in ESP32-S3R8V chip, Xtensa® dual-core 32-bit LX7 microprocessor (supports single-precision floating-point unit), with clock frequency up to 240 MHz
- 384 KB ROM
- 512 KB SRAM
- 16 KB RTC SRAM
- 8 MB PSRAM
Wi-Fi
- 802.11 b/g/n
- Data rates up to 150 Mbps in 802.11n mode
- Frame aggregation (TX/RX A-MPDU, TX/RX A-MSDU)
- 0.4 µs guard interval
- Operating channel center frequency range: 2412 ~ 2484 MHz
Bluetooth
- Bluetooth Low Energy (Bluetooth LE): Bluetooth 5, Bluetooth mesh
- Supported data rates: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps
- Advertising Extensions
- Multiple Advertisement Sets
- Channel Selection Algorithm #2
- Coexistence of Wi-Fi and Bluetooth, sharing the same antenna
Peripherals
- GPIO, SPI, LCD interface, Camera interface, UART, I2C, I2S, IR remote, pulse counter, LED PWM, full-speed USB 2.0 OTG, USB Serial/JTAG controller, MCPWM, SDIO host interface, GDMA, TWAI® controller (ISO 11898-1 compliant), ADC, touch sensor, temperature sensor, timers, and watchdog
Module Integrated Components
- 40 MHz integrated crystal oscillator
- Up to 32 MB Octal SPI flash
Antenna Options
- Onboard PCB antenna
Operating Conditions
- Operating voltage/power supply voltage: 3.0 ~ 3.6 V
- Operating temperature: –40 ~ 65°C
Testing
- HTOL, HTSL, uHAST, TCT, ESD
ESP32-S3-WROOM-2 Series Model Comparison
| Model Number | Flash | PSRAM | Operating Temperature (°C) | Dimensions (mm) |
|---|---|---|---|---|
| ESP32-S3-WROOM-2-N16R8V | 16 MB (Octal SPI) | 8 MB (Octal SPI) | -40 ~ 65 | 18.0 × 25.5 × 3.1 |
| ESP32-S3-WROOM-2-N32R8V | 32 MB (Octal SPI) | 8 MB (Octal SPI) | -40 ~ 65 | 18.0 × 25.5 × 3.1 |
Applications
- General low-power IoT sensor hub
- General low-power IoT data logger
- Camera video streaming
- OTT TV box/set-top box devices
- USB devices
- Voice recognition
- Image recognition
- Mesh networks
- Home automation
- Industrial automation
- Smart agriculture
- Audio equipment
- Health/medical/caregiving
- Wi-Fi toys
- Wearable electronics
- Retail & Catering
- Smart buildings