I2C

[pohtai2020]

Hi,
I currently doing my final semester project with PIC16F877. I have problem with the 24C16. What should I change, if I am using your Tutorial 6.1 for my 24C16 chip. I try to change the line xorlw d'64' to xorlw d'512' but when I compile a warning stated that the argument is out of range and least significant bits is used.

 

[kentken]

Get the data sheets for both.
Compare the two, see what is different, and make the correct changes to the program.


Kent

 

[Nigel Goodwin]

Hi,
I currently doing my final semester project with PIC16F877. I have problem with the 24C16. What should I change, if I am using your Tutorial 6.1 for my 24C16 chip. I try to change the line xorlw d'64' to xorlw d'512' but when I compile a warning stated that the argument is out of range and least significant bits is used.

The error is because you are trying to use a ten bit value (512) in an 8 bit register.

You need to read the datasheet for the EEPROM to see how you address more than 256 bytes.

 

[StupidDum]

For I2C device with small memory, it uses only 1 byte of address
For large memory, each address location consist of 2 bytes