Hi,

the pull-up should not exceed 4k7, for high-speed connection even 1k.
Regards,
Imre


On Fri, 22 Oct 1999, Harry Febianto wrote:

> Hi,
> I am trying to write and read eeprom 24C16. However it does not work.
> Did you ever did it ? I am using 16F84, 4MHz oscillator, SDA to RB7, SCL
> to RB6. Using Resistor pull-up to Vcc, 22k in, in SDA and SCL. I think
> the circuit is correct. I checked the voltage too.
>
> I followed the instruction in Application Notes AN567 and others,
> modified it to run at  16F84. I just write and read 1 byte. However, my
> 16F84 just read FF.
>
> Do you have any advises about it ? Is the algorithm wrong ? or Should I
> buy the new eeprom?
>
> Thanks a lot for your help.
>
> Regards,
> Harry
>
>