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?
monterojcs
 
Posts: 1
Joined: Sat Jun 06, 2009 1:21 pm

Re: About zener diode

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

the zener helps pulls the CS line high
User avatar
adafruit
 
Posts: 11666
Joined: Thu Apr 06, 2006 3:21 pm
Location: nyc