About zener diode

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monterojcs
 
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About zener diode

Post by monterojcs »

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?

adafruit
 
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Re: About zener diode

Post by adafruit »

the zener helps pulls the CS line high

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