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problem with 24lc512

 
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curt2go



Joined: 21 Nov 2003
Posts: 200

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problem with 24lc512
PostPosted: Tue Mar 23, 2004 11:31 am     Reply with quote
The problem I am having is I asm not able to get to the top half of the eeprom. I am using the 24lc256 driver but have made the size 65536. Let me know if you can help or have a better driver that will work.. Thanx in advance.. TTY

PS I have done a search but to no avail...
Ttelmah
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Re: problem with 24lc512
PostPosted: Tue Mar 23, 2004 11:44 am     Reply with quote
curt2go wrote:
The problem I am having is I asm not able to get to the top half of the eeprom. I am using the 24lc256 driver but have made the size 65536. Let me know if you can help or have a better driver that will work.. Thanx in advance.. TTY

PS I have done a search but to no avail...

I think you will find, that you need to mask the extra 'address' bit, and add it to the control words sent in the read/write operations.
You'll need to check the chips data sheet, but I think it has one bit of the control word used as the extra address.

Best Wishes
curt2go



Joined: 21 Nov 2003
Posts: 200

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PostPosted: Tue Mar 23, 2004 11:53 am     Reply with quote
Got it . It was not the driver. In my reading and writing loop I was only using a long which is not a big enough numer.. TTY
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