Overview
The ESP32-WROOM-32D is a powerful and versatile Wi-Fi, Bluetooth, and BLE (Bluetooth Low Energy) module developed by Espressif Systems. This module is based on the ESP32-D0WD chip, which features a dual-core Xtensa 32-bit LX6 MCU. It is designed to target a wide range of applications, from low-power sensor networks to demanding tasks such as voice encoding, music streaming, and MP3 decoding. The module integrates a wealth of peripherals, including Wi-Fi, Bluetooth, and various interfaces, making it highly adaptable for different use cases.
Key Specifications
| Category | Specification |
|---|---|
| Core | ESP32-D0WD, Dual-core Xtensa 32-bit LX6 MCU |
| Frequency Range | 2.4 GHz ~ 2.5 GHz |
| Wi-Fi Protocols | 802.11 b/g/n (802.11n up to 150 Mbps), A-MPDU and A-MSDU aggregation, 0.4 μs guard interval support |
| Bluetooth Protocols | Bluetooth v4.2 BR/EDR and BLE specification |
| Radio | NZIF receiver with –97 dBm sensitivity, Class-1, class-2 and class-3 transmitter AFH |
| Audio | CVSD and SBC |
| Module Interfaces | SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR, GPIO, capacitive touch sensor, ADC, DAC |
| On-chip Sensor | Hall sensor |
| Integrated Crystal | 40 MHz crystal |
| Integrated SPI Flash | 4 MB |
| Operating Voltage/Power Supply | 2.7 V ~ 3.6 V |
| Operating Current (Average) | 80 mA |
| Minimum Current Delivered by Power Supply | 500 mA |
| Recommended Operating Temperature Range | –40 °C ~ +85 °C |
| Dimensions | (18.00±0.10) × (25.50±0.10) × (3.10±0.10) mm |
Key Features
- Dual-Core MCU: The ESP32-D0WD chip features a dual-core Xtensa 32-bit LX6 MCU, allowing for efficient processing and multitasking.
- Wi-Fi and Bluetooth Integration: Supports Wi-Fi (802.11 b/g/n) and Bluetooth (v4.2 BR/EDR and BLE), enabling a wide range of wireless connectivity options.
- Low Power Consumption: The module has a sleep current of less than 5 μA, making it suitable for battery-powered and wearable electronics applications.
- Rich Peripherals: Includes SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, IR, GPIO, capacitive touch sensor, ADC, and DAC interfaces.
- High-Speed Data Transfer: Supports data rates up to 150 Mbps and has 20 dBm output power at the antenna for a wide physical range.
- Certifications: Compliant with FCC, CE-RED, IC, TELEC, KCC, SRRC, NCC, Wi-Fi Alliance, BQB, REACH, and RoHS standards.
Applications
- IoT Devices: Ideal for Internet of Things (IoT) applications requiring Wi-Fi and Bluetooth connectivity.
- Wearable Electronics: Suitable for wearable devices due to its low power consumption.
- Smart Home Devices: Can be used in smart home devices for automation and control.
- Industrial Automation: Applicable in industrial settings for monitoring and control systems.
- Audio and Voice Applications: Supports voice encoding, music streaming, and MP3 decoding.
Q & A
- What is the core chip used in the ESP32-WROOM-32D module?
The core chip used is the ESP32-D0WD, which is a dual-core Xtensa 32-bit LX6 MCU.
- What are the supported Wi-Fi protocols?
The module supports 802.11 b/g/n (802.11n up to 150 Mbps), A-MPDU and A-MSDU aggregation, and 0.4 μs guard interval support.
- What Bluetooth protocols are supported?
The module supports Bluetooth v4.2 BR/EDR and BLE specification.
- What is the operating voltage range of the ESP32-WROOM-32D?
The operating voltage range is 2.7 V ~ 3.6 V.
- What is the average operating current of the module?
The average operating current is 80 mA.
- What are the dimensions of the ESP32-WROOM-32D module?
The dimensions are (18.00±0.10) × (25.50±0.10) × (3.10±0.10) mm.
- Does the module support external flash and SRAM?
Yes, it supports up to 16 MB of external QSPI flash and SRAM.
- What certifications does the ESP32-WROOM-32D comply with?
The module complies with FCC, CE-RED, IC, TELEC, KCC, SRRC, NCC, Wi-Fi Alliance, BQB, REACH, and RoHS standards.
- What is the recommended operating temperature range?
The recommended operating temperature range is –40 °C ~ +85 °C.
- Does the module have any on-chip sensors?
Yes, it includes a Hall sensor.
