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24AA1025 EEPROM

 
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sublime



Joined: 24 Mar 2007
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24AA1025 EEPROM
PostPosted: Sat Mar 24, 2007 6:17 pm     Reply with quote

Does anyone know if the 1Mbit 24AA1025 EEPROM chip is compatible with the 24256.C driver? I ask because I have the 24AA1025 chip, but no driver (if someone has a 241025.C driver please contact me).

As well, the data sheet for the 24AA1025 says that pin A2 should always bet tied high (5V in my case). The smaller chips 24LC64/128/256 I have always connected pin A2 to ground. Honestly I never knew why I did it, I was told to do that long ago, and have never had to return to the issue.

Thanks,
Sublime
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Sat Mar 24, 2007 11:36 pm     Reply with quote

CCS has a driver for it. It's called 241025.c and it's in this directory:

c:\Program Files\Picc\Drivers

If you don't have it, send an email to CCS support and ask if they
will send it to you. If you ever bought the compiler, I think they will
send it. Give them your user Reference Number.
sublime



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PostPosted: Sun Mar 25, 2007 3:33 pm     Reply with quote

Im using a compiler at university...

dont know the reference number... ive picked up a 256kb chip, and am using that for the time being...
PCM programmer



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PostPosted: Sun Mar 25, 2007 3:49 pm     Reply with quote

The 24LC1025 driver that's posted near the end of this thread by gs
looks very similar to the CCS driver file:
http://www.ccsinfo.com/forum/viewtopic.php?t=27861

There is also driver for the 25AA1025 posted in the Code Library forum:
http://www.ccsinfo.com/forum/viewtopic.php?t=28530
sublime



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PostPosted: Sun Mar 25, 2007 6:20 pm     Reply with quote

i cant help but ask why the 24AA1025 and 24LC1025 would have different drivers?


I ended up making my own driver... Still using the 256kb chip for now... i have A2 on the EEPROM soldered low. the 24xx1025 data sheet says the device will not operate unless A2 IS high. Blah... im think i should get a little bit high.
PCM programmer



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PostPosted: Sun Mar 25, 2007 6:32 pm     Reply with quote

The driver in the Code Library is for 4 of the 128KB 24AA1025 chips
used together, to create a combined eeprom memory array of 512 KB.

You don't need it.

Use the other driver in the link that I provided.

Or use your own driver.
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