ESP32-WROOM-32D and ESP32-WROOM-32U are powerful, generic Wi-Fi+BT+BLE 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 U.FL connector. For detailed information on the U.FL connector please see Chapter 10 in the datasheet attached. 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 the document in the attachment.
SPI Flash: 32 Mbit
Operating Voltage: 3.3V
Antenna: U.FL carrier, need to be equipped with IPEX antenna
WiFi frequency: 2.4GHZ~2.5GHZ
Interface: SD card, UART. SPI. SDIO. I2C.LED PWM, Motor PWM. I2C, IR, pulse counter, GPIO, capacitive touch sensor, ADC.DAC
On-chip crystal: 40MHZ crystal
Integrated SPI flash: 4 MB
Working voltage / supply voltage: 2.7V ~ 3.6V
Working current: average: 80mA
Supply current: minimum: 500mA
1 x ESP32-WROOM-32U Chipset Module