ESP32-WROOM-32D and ESP32-WROOM-32U are powerful, generic Wi-Fi + Bluetooth + Bluetooth LE MCU modules that target a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding. ESP32-WROOM-32U is different from ESP32-WROOM-32D in that ESP32-WROOM-32U integrates a connector to connect an external antenna. For detailed information of the connector please see Chapter 10. Note that the information in this data sheet is applicable to both modules. Any differences between them will be clearly specified in the course of this document. Table 1 lists the difference between ESP32-WROOM-32D and ESP32-WROOM-32U.
|SPI flash||32 Mbits, 3.3 V||32 Mbits, 3.3 V|
|Crystal||40 MHz||40 MHz|
|Antenna||on-board PCB antenna||external antenna connector (which needs to be
connected to an external antenna)
|Dimensions (Unit: mm)||18 × 25.5 × 3.1||18 × 19.2 × 3.2|
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