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OT - PIC choice - [closed]

 
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Gabriel



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OT - PIC choice - [closed]
PostPosted: Tue Oct 21, 2014 6:35 am     Reply with quote

Hi,

Anyone know of a pic with integrated eeprom?
Im not talking about the usual 256bytes, but rather like an integrated 25lc512.

Thanks
g.
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Last edited by Gabriel on Tue Oct 21, 2014 12:43 pm; edited 1 time in total
gaugeguy



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PostPosted: Tue Oct 21, 2014 6:59 am     Reply with quote

Long ago Microchip had an 8 pin processor with two dies inside. An 8 bit processor and a 16 byte EEPROM. There were connected with a pair of I/O pins that were not brought outside the chip and used software I2C communication. PIC12CE673. This was before they started integrating the data EEPROM on-chip.
Probably not what you are looking for.
Gabriel



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PostPosted: Tue Oct 21, 2014 8:50 am     Reply with quote

Thats the "concept" im looking for but with at least 256kbit and hopefully 512kbit

thanks.
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asmallri



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PostPosted: Tue Oct 21, 2014 9:12 am     Reply with quote

Gabriel wrote:
Thats the "concept" im looking for but with at least 256kbit and hopefully 512kbit

thanks.


You have the PIC18F97J60 in your signature. This has a large amount of program memory 128K. It is straight forward to emulate an EEPROM in program memory. You could use the top 64K (512K bits) for am emulated EEPROM. Naturally you could use the same technique with other PICs.
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Ttelmah



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PostPosted: Tue Oct 21, 2014 9:26 am     Reply with quote

But (of course) remember this is flash memory, not "EEPROM", so no single byte erase. Just page based operations.

If you want a traditional EEPROM, I'm afraid you need to connect it externally.
Gabriel



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PostPosted: Tue Oct 21, 2014 12:36 pm     Reply with quote

Im working on a very specific use dataloger.
so far ive reduced it to a single 16F1825 and a 25LC512 and 1 sensor.
i think PIC18F97J60 is an extreme overkill... but its worth looking at pics with large flash..

i was thinking it would be awesome if i could do a complete single chip solution.

Thanks anyways.

g.
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