menuconfig option: VDDSDIO LDO voltage

zliudr
Posts: 204
Joined: Thu Oct 03, 2019 5:15 am

menuconfig option: VDDSDIO LDO voltage

Postby zliudr » Sat Dec 07, 2019 7:13 am

Could someone explain this option please? I thought VDDSDIO is either 1.8V or 3.3V. What is the 1.9V here? I've been using WROOM with this setting untouched until I saw it today and don't know what it does. I've just upgraded to WROVER-B module that seems to not connect a resistor to enable 1.8V VDDSDIO. How is this option related to WROOM, WROVER, and WROVER-B?

I'm using ESP-IDF V3.3

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zliudr
Posts: 204
Joined: Thu Oct 03, 2019 5:15 am

Re: menuconfig option: VDDSDIO LDO voltage

Postby zliudr » Sun Dec 08, 2019 4:39 am

So no effect for 3.3V SPI FLASH. Thanks.

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