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EEPROM hookup


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5 replies to this topic

#1 RogerWilco

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Posted 13 January 2014 - 12:05 AM

Hello!

 

I'm a long time lurker but this is my first post. There are plenty of hookup diagrams for Arduino with the 24LC256 EEPROM chip but few for Netduino.

 

Just wondering if I need the any resistors? Arduino doesn't seem to mind.

http://dayzlab.wordp...rom-on-arduino/



#2 Chris Walker

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Posted 13 January 2014 - 12:07 AM

Hi RogerWilco, Generally speaking, you should always use external pull-ups for I2C. Some micros have pull-ups which are strong enough for some speeds on some devices--but I'd start out with pull-ups. Welcome to the Netduino community, Chris

#3 RogerWilco

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Posted 13 January 2014 - 12:08 AM

Wow, that was quick. Thanks Chris.

 

Cheers for that.



#4 RogerWilco

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Posted 15 January 2014 - 02:37 AM

What size would anybody recommend?



#5 CW2

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Posted 15 January 2014 - 07:42 AM

What size would anybody recommend?

 

Anything in range ~1 k? to 47 k? should work, 10 k? is popular value.



#6 RogerWilco

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Posted 15 January 2014 - 11:19 PM

Thanks CW2. Cheers.

 

These for 3.3V operation or 5V?






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