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Multiple EEPROMs and pull up resistors?

 
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Joined: 17 May 2005
Posts: 213

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Multiple EEPROMs and pull up resistors?
PostPosted: Wed Jul 06, 2005 9:54 am     Reply with quote
Hi

If I have four EEPROMS communicating to a PIC using i2c. Do I need a 2kOhm pull up resistor for each each EEPROM on the SCL and SDA lines?
Or can I use just one set of pull up resistors (2 in number)?

Thank you in advance
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rnielsen



Joined: 23 Sep 2003
Posts: 852
Location: Utah

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PostPosted: Wed Jul 06, 2005 10:34 am     Reply with quote
You only need one resistor on each bus line (2 resistors total). The resistors are not for each eeprom but for the bus line itself. Try using between 2k - 4k first.

Ronald
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