ESP32-WROOM-32U Overview
8 2.3 Strapping Pins 10 3 Functional Description 12 3.1 CPU and Internal Memory 12 3.2 External Flash and SRAM 12 3.3 Crystal Oscillators 12 3.4 RTC and Low-Power Management 13 4 Peripherals and Sensors 14 5 15 5.1 Ratings 15 5.2 Remended Operating Conditions.