>I got a X24C02 serial EEPROM,
...
> So I read several times the X24C02 datasheet, but
>something doesn't sound right. It says the device
>sends an acknowledge after every byte received. Fine.
>But the problem is "after sending 8 bits, the master
>releases the bus (SDA) and the slave will pull down
>the SDA line to acknowledge the byte received.".
>I'm not exactly sure about this.

Right, it is clear that you have no experience of the I2C bus. First step is
to rectify this. Go to
http://www.semiconductors.philips.com/buses/i2c/support/index.html and go to
the bottom of the page and download the I2C bus specification. This is the
definitive document on it.

Now go to http://www.piclist.com/techref/piclist/index.htm and follow the
links to the source code library. There is code in the library to allow
using I2C devices with 16F84 PICs.

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