About zener diode

by monterojcs on Sat Jun 06, 2009 1:23 pm

I have seen that on the SD you use a pair of resistor for SCLK and DATA IN pins, but there are two resistor and a zener on CS pin. Why the difference?
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Re: About zener diode

by adafruit on Wed Jun 10, 2009 10:06 am

the zener helps pulls the CS line high
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