Re: PIC and EEPROM modules

On a sunny day (Wed, 9 Jan 2008 05:45:19 -0800 (PST)) it happened
coetzee.evert@xxxxxxxxx wrote in
<0b5e9417-d9ab-4bde-b93f-2e96f2d89bfc@xxxxxxxxxxxxxxxxxxxxxxxxxxx>:

Hi guys

I'm currently using a PIC16F84 for a project. I need to use more
EEPROM than I have on the chip. So I'm considering adding a memory
module to store the additional data. I have no idea what my options
are, which will be the easiest to implement etc.

I dont even need the PIC to write the data to the EEPROM. I would like
to use my computer to program the EEPROM (max 1Mb) and then just use
the PIC to read it (I do the same currently with the PIC. Write EEPROM
data with the pic programmer and then read the data with the PIC).

Here is a small program in C to write via the part port to a 24C16
EEPROM.
It can also do bigger EEPROMs, scroll down to 'eeprog'.
http://panteltje.com/panteltje/satellite/index.html

This needs only 3 external components (2 resistors, 1 diode).
Been 6 years since I wrote that, dont't remember anything more,
but at least once I also had PIC 16F84 asm code to read that EEPROM.

.

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