On Wed, 14 Aug 2002 13:07:30 +0100 info writes: > Hello gang > Have a pic 18f452 that is talking to some i2c periphials. The > devices > are ack'ing but only pulling the line to about .3 of vcc on one > device > and .6 on the other 12c device. I know that this is an ack because > if I > change the address the poor attempt at acknowlegement dissapears. > > Should the line be pulled to 0 v and if not how low would you expect > the > data line to go during an ack. > Any suggestions appreciated as the pic won't see the .6 of vcc ack > as an > ack! > Mike > What's your I2C pull up resistor? I'm using 2k and stuff seems to work fine. I think maybe the pull up is too small. Harold FCC Rules Online at http://hallikainen.com/FccRules Lighting control for theatre and television at http://www.dovesystems.com Reach broadcasters, engineers, manufacturers, compliance labs, and attorneys. Advertise at http://www.hallikainen.com/FccRules/ . ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu