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The ESP32-WROOM-32D is a powerful WiFi, Bluetooth and BLE module aimed at a wide variety of applications, from low-power sensor networks to demanding tasks such as voice encoding, music streaming and MP3 decoding. Espressif built it around two low-power Xtensa 32-bit LX6 microprocessors.
WiFi support covers 802.11 b/g/n/d/e/i/k/r, with 802.11n reaching up to 150 Mbps, and security includes WPA, WPA2, WPA2-Enterprise and WPS.
Flash is 8 MB as named in the title. On-chip memory includes 520 KB of SRAM, plus 8 KB in RTC slow memory and 8 KB in RTC fast memory, and 448 KB of ROM for booting and core functions. There is 1 kbit of eFuse storage, including a 256-bit MAC address. Operating voltage is 2.2 to 3.6 V, typical consumption is about 80 mA and the operating temperature range is -40 to +85 C.
The peripheral list is extensive: SD-card, UART, SPI, SDIO, I2C, LED PWM, motor PWM, I2S, IR, GPIO, capacitive touch sensing, ADC, DAC, a Hall sensor and a temperature sensor. Power the module from a clean, adequately rated supply, since radio modules draw current in short bursts that a weak supply cannot follow. Keep the antenna clear of metal and ground planes, and start with the maker's example code before writing your own.
Product developers who need a capable ESP32 module with generous flash for larger applications, audio work or complex IoT firmware.
Because this is a bare module rather than a development board, you will need to design a small carrier PCB or use a breakout, provide a clean regulated 3.3 V supply capable of handling brief current spikes during WiFi transmission, and follow Espressif's reference layout for the antenna area. Reserve the strapping pins according to the datasheet so that the module boots correctly.
8 MB.
Two low-power Xtensa 32-bit LX6 cores.
2.2 to 3.6 V.
About 80 mA.
WPA, WPA2, WPA2-Enterprise and WPS.
| Brand | Espressif |
|---|---|
| Chipset | ESP32 |
| Selling unit | PCS |
