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CASIO fx-ES -- 3.3v tolerant?


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#1 sleirsgoevy

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Posted 07 April 2020 - 08:53 PM

There is a document that claims that the chipset used in CASIO fx-ES series of calculators supports input voltages of up to 3.6 volts. Does anybody have any evidense that the calc will actually run off 3.3v instead of 1.5v?

Why I need it is simple: I basically want to interface the calc to an external 3.3v device, and having the same logical level on both devices would greatly simplify the schematic.



#2 Hlib2

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Posted 14 April 2020 - 04:25 PM

You can use logic level converters from TI of the AVCxT 1.2 ... 3.6 V family.




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