Dear All,
I currently developing AFE4490 with arduino for pulse oximetre using NJL5501r.
I have a question regarding the SPI communication in AFE4490.
How much voltage is it required to power up the SPI?
I have a arduino Mega 2560, that its SPI pins have 5 volt,
So i wonder if it is too much to power the SPI of AFE4490? Otherwise I put a logic level converter between my arduino and AFE4490 chip.
Best Regards,
Stella
