I2C problem (16F877A with DS1844)

[lissajous]

Thanks for the post

Unfortunately that way nor functionate. Already I've tried with one other DS1844 also , but nothing change. Already everything run-through on several occasions , but nothing make mistake not I had found.

[BobK]

Hello,

Do you have 4.7K pull up resistors on SCL and SDA?

BobK

[T_J_W]

You may have a trace problem or breadboard problem. Check with a meter.

Tim

[lissajous]

Thanks

Yes, I have 4,7k pull-up resistors

Already I've tried check, but I hadn't found nothing mistake.
Yet I will to try