Electronics > FPGA

SD card/SDIO 3.0 level translation solution

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--- Quote from: mroberto on April 07, 2024, 05:20:10 pm ---Isn't 1.95 V a little bit too low on the microcontroller side?

--- End quote ---
No, that's perfect for 1.8 V logic level.

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.


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