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Gabriel
Joined: 03 Aug 2009 Posts: 1067 Location: Panama
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OT - PIC choice - [closed] |
Posted: Tue Oct 21, 2014 6:35 am |
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Hi,
Anyone know of a pic with integrated eeprom?
Im not talking about the usual 256bytes, but rather like an integrated 25lc512.
Thanks
g. _________________ CCS PCM 5.078 & CCS PCH 5.093
Last edited by Gabriel on Tue Oct 21, 2014 12:43 pm; edited 1 time in total |
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gaugeguy
Joined: 05 Apr 2011 Posts: 296
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Posted: Tue Oct 21, 2014 6:59 am |
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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. |
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Gabriel
Joined: 03 Aug 2009 Posts: 1067 Location: Panama
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Posted: Tue Oct 21, 2014 8:50 am |
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Thats the "concept" im looking for but with at least 256kbit and hopefully 512kbit
thanks. _________________ CCS PCM 5.078 & CCS PCH 5.093 |
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asmallri
Joined: 12 Aug 2004 Posts: 1634 Location: Perth, Australia
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Posted: Tue Oct 21, 2014 9:12 am |
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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. _________________ Regards, Andrew
http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!! |
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Ttelmah
Joined: 11 Mar 2010 Posts: 19369
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Posted: Tue Oct 21, 2014 9:26 am |
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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. |
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Gabriel
Joined: 03 Aug 2009 Posts: 1067 Location: Panama
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Posted: Tue Oct 21, 2014 12:36 pm |
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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. _________________ CCS PCM 5.078 & CCS PCH 5.093 |
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