> What pullups are you using? Sounds like you might be using pullups that are > too strong for the chips in question. Check the spec for the I2C chips you > are using for the recommended pullups. You don't check the specs of the IIC chips. The IIC specification explicitly states the maximum current sink required to get to logic 0 level. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu