Jinkalinx wrote:
>> Check the archives. I think it's been determined that there
>> really aren't any of any appreciable size. I've ended up
>> going with byte wide SRAM and using latches to latch the
>> addresses off 8 data lines leaving the PIC.
>>
>> Harold
>
>I remember that topic and had a little discussion off-list. The
>best the two of us could come up with was a module that had
>a 12C508 as the I2C interface (including an ID function),
>address drivers, and an SRAM or NVRAM to suit. Functionally
>it would look like an I2C peripheral but would be slower because
>of the decoding process of the 12C508 and drivers
>

I designed a couple of my own boards to handle the
PIC = lack_of_available_RAM problem.

One is a full-blown SBC for 40-pin PICs which holds a 32-512KB
SRAM chip, and the other is a small pcb about 2" x 2.25" which
holds a 44-pin PLCC PIC74/etc plus 2 32K SRAM chips. The 2nd
one would allow I2C accesses - provided someone wrote the
firmware - which I never got around to doing. I have a few
of the pcbs around if anyone wants to grind their own code.

- dan michaels
www.oricomtech.com
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