Overview
The ESP32-WROOM-32E-N4, developed by Espressif Systems, is a powerful and versatile Wi-Fi + Bluetooth + Bluetooth LE MCU module. It is designed to target a wide variety of applications, ranging from low-power sensor networks to more demanding tasks such as voice encoding, music streaming, and MP3 decoding. This module integrates advanced features and peripherals, making it a robust solution for IoT connectivity and various other use cases.
Key Specifications
| Parameter | Description |
|---|---|
| CPU and On-Chip Memory | ESP32-D0WD-V3 or ESP32-D0WDR2-V3 embedded, Xtensa dual-core 32-bit LX6 microprocessor, up to 240 MHz; 448 KB ROM; 520 KB SRAM; 16 KB SRAM in RTC; 2 MB PSRAM (for ESP32-D0WDR2-V3) |
| WiFi | 802.11b/g/n; Bit rate: 802.11n up to 150 Mbps; A-MPDU and A-MSDU aggregation; 0.4 µs guard interval support; Center frequency range of operating channel: 2412 ~ 2484 MHz |
| Bluetooth | Bluetooth V4.2 BR/EDR and Bluetooth LE specification; Class-1, class-2 and class-3 transmitter; AFH; CVSD and SBC |
| Peripherals | SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR, pulse counter, GPIO, capacitive touch sensor, ADC, DAC, TWAI® (compatible with ISO 11898-1, i.e. CAN Specification 2.0) |
| Integrated Components on Module | 40 MHz crystal oscillator; 4 MB SPI flash (expandable to 8 MB or 16 MB for custom orders) |
| Antenna Options | On-board PCB antenna |
| Operating Conditions | Operating voltage/Power supply: 3.0 ~ 3.6 V; Operating ambient temperature: –40 ~ 85 °C |
| Certification | Bluetooth certification: BQB; RF certification: FCC/CE-RED/SRRC; Green certification: REACH/RoHS |
Key Features
- Dual-core 32-bit LX6 microprocessor with up to 240 MHz clock speed
- Integrated Wi-Fi and Bluetooth capabilities with advanced protocols
- Rich set of peripherals including SD card, UART, SPI, I2C, and more
- Support for low-power sensor networks and demanding tasks like voice encoding and music streaming
- On-board PCB antenna for Wi-Fi connectivity
- Compliance with various certifications including Bluetooth, RF, and green certifications
Applications
The ESP32-WROOM-32E-N4 is versatile and can be used in a wide range of applications, including:
- Low-power sensor networks
- IoT devices and smart home systems
- Voice encoding and music streaming devices
- MP3 decoding and other audio applications
- Industrial automation and control systems
- Wearable technology and health monitoring devices
Q & A
- What is the CPU specification of the ESP32-WROOM-32E-N4?
The module features an ESP32-D0WD-V3 or ESP32-D0WDR2-V3 embedded, Xtensa dual-core 32-bit LX6 microprocessor, up to 240 MHz.
- What are the Wi-Fi capabilities of the ESP32-WROOM-32E-N4?
The module supports 802.11b/g/n Wi-Fi with a bit rate of up to 150 Mbps and features A-MPDU and A-MSDU aggregation.
- What Bluetooth specifications does the ESP32-WROOM-32E-N4 support?
The module supports Bluetooth V4.2 BR/EDR and Bluetooth LE specification.
- What peripherals are available on the ESP32-WROOM-32E-N4?
The module includes peripherals such as SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR, pulse counter, GPIO, capacitive touch sensor, ADC, DAC, and TWAI®.
- What is the operating voltage range of the ESP32-WROOM-32E-N4?
The operating voltage range is 3.0 ~ 3.6 V.
- What is the operating temperature range of the ESP32-WROOM-32E-N4?
The operating ambient temperature range is –40 ~ 85 °C.
- What certifications does the ESP32-WROOM-32E-N4 hold?
The module holds Bluetooth certification (BQB), RF certification (FCC/CE-RED/SRRC), and green certification (REACH/RoHS).
- Can the ESP32-WROOM-32E-N4 be used in low-power applications?
Yes, the module is suitable for low-power sensor networks and other low-power applications.
- What type of antenna does the ESP32-WROOM-32E-N4 come with?
The module comes with an on-board PCB antenna.
- Is the ESP32-WROOM-32E-N4 compatible with industrial automation systems?
Yes, the module is compatible with industrial automation and control systems due to its rich set of peripherals and communication capabilities.
