Data Sheet

2. PIN DEFINITIONS
Timing of SDIO Slave
Pin Default
Falling-edge Input
Falling-edge Output
Falling-edge Input
Rising-edge Output
Rising-edge Input
Falling-edge Output
Rising-edge Input
Rising-edge Output
MTDO Pull-up 0 0 1 1
GPIO5 Pull-up 0 1 0 1
Note:
• Firmware can configure register bits to change the settings of ”Voltage of Internal LDO (VDD_SDIO)” and ”Timing
of SDIO Slave” after booting.
• The MTDI is internally pulled high in the module, as the flash and SRAM in ESP32-WROVER only support a power
voltage of 1.8V (output by VDD_SDIO).
Espressif Systems 6 ESP32-WROVER Datasheet V1.2