PDA

View Full Version : Sharing CLOCK and DATA Lines



Mikerocontroller
12-03-2009, 02:01 AM
I'm using a DS1620 Temperature chip and DS1302 Timekeeping chip in the same circuit. I understand the CLOCK lines can be shared. Can I also share the DATA lines?

Tracy Allen
12-03-2009, 02:17 AM
Yes, so long as you have separate chip select lines for the '1302 and the '1620. Its always a good idea to include a resistor of 220 to 1000 ohms in each data line, to avoid the possibility of contention.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Tracy Allen
www.emesystems.com (http://www.emesystems.com)

Mikerocontroller
12-03-2009, 12:32 PM
Thank you Mr. Allen. P.S. Your Stamp Math info should be required reading!