Hello all

I have problem with i2c serial communication

I have written some code to send data to serial device

I am using pin 6 on 12c508 as clock,and pin 5 as data

The code only works if I have my oscilloscope on pin 5 (data)

if I take it of the pin the code wont work anymore.

the device I am communicating with uses standard i2c protocol

I have used the same code to talk to other devices on the same bus with no problems

but on this device I have this problem any one no why??

I think I can solve the problem with resistor or capacitor on pin 6 to earth

But dont want to use anymore components

any help will be greatly appreciated