I have implemented a subset up I2C to provide an interface to the 24LC64 Serial
EEProm.

Mail me if you would like the code for the 16F84. (Ian@Allanon.Demon.co.uk)

The high level interface is provided via four Macros

Firstly to move four bytes of data
MOV4FE  <8 bit FileRegeister Address>,<16 bit EEProm Address>
MOV4EF  <16 bit EEProm Address>,<8 bit FileRegeister Address>

and secondly to move 8 bytes of data
MOV8FE  <8 bit FileRegeister Address>,<16 bit EEProm Address>
MOV8EF  <16 bit EEProm Address>,<8 bit FileRegeister Address>

I think they are reasonably well optimised!

----------
From:   James Cameron[SMTP:cameron@STL.DEC.COM]
Reply To:       pic microcontroller discussion list
Sent:   12 October 1998 00:22
To:     PICLIST@MITVMA.MIT.EDU
Subject:        Re: EEPROM To 16F84

birko@HOME.COM wrote:
> Can somebody tell me what would be the EEPROM number to buy for first
> time user of EEPROM chips?  Also, if there is anything to make this job
> easier would certainly like to hear it.

What do you want the EEPROM to do?  Hold data?  Hold code?  Be a part of
a microcontroller itself or be spoken to by a 16F84?

I'd suggest you browse the EEPROM parts that are available, mention a
few here, and some of us could say "Yes, used that one," or "Not
available here."

Depends on whether this is a once-off or production run.

--
James Cameron                                    (cameron@stl.dec.com)
Digital Equipment Corporation (Australia) Pty. Ltd. A.C.N. 000 446 800
! Courtesy of Anarksoft Ltd. !