Author Topic: SD card/SDIO 3.0 level translation solution  (Read 16856 times)

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Offline asmiTopic starter

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Re: SD card/SDIO 3.0 level translation solution
« Reply #25 on: April 07, 2024, 05:52:18 pm »
Isn't 1.95 V a little bit too low on the microcontroller side?
No, that's perfect for 1.8 V logic level.

Offline antercreeper

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Re: SD card/SDIO 3.0 level translation solution
« Reply #26 on: April 11, 2024, 03:36:39 am »
The worst things is those level shift chips are really hard to obtain and very expensive...... :-DD
I choose ti TXB0104 and TPS62743, or an adjustable LDO is ok.(From datasheets, you can change TPS62743's voltage during running by changing vsel pins.)
of course you can make a power switch if your system has both 1.8V and 3.3V rails, for example mp5095)
These chips are really really common and very cheap.

« Last Edit: April 11, 2024, 03:38:28 am by antercreeper »
 


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