Backup RAM

Started by jjbro1 May 23, 2007
Hi All,

I am using the Phillips LPC2368 micro controller with the GNU
Compiler. The LPC23XX series of controllers have 2kB of battery
backed RAM on chip. I have used the GNU debugger and it appears to me
that the backup RAM is 32bit word addressable. I can confirm that the
main memory is 8bit byte addressable. I have thoroughly read all of
the documentation and it does not mention anything about accessing the
backup memory. Can anybody confirm this?

This being the case does anybody know if I can configure GCC to access
two different memory types?

Has anybody used the backup memory on the LPC23XX series or other
Phillips controllers? Did you have a similar experience and how do
you get around it?

Regards, James Brown

An Engineer's Guide to the LPC2100 Series

Mr. Can you send me your files of start up and config of this processor?
Just to me make a blink led sample with them .... thanks a lot for your help.

leomecma
----- Original Message -----
From: jjbro1
To: l...
Sent: Wednesday, May 23, 2007 12:56 AM
Subject: [lpc2000] Backup RAM
Hi All,

I am using the Phillips LPC2368 micro controller with the GNU
Compiler. The LPC23XX series of controllers have 2kB of battery
backed RAM on chip. I have used the GNU debugger and it appears to me
that the backup RAM is 32bit word addressable. I can confirm that the
main memory is 8bit byte addressable. I have thoroughly read all of
the documentation and it does not mention anything about accessing the
backup memory. Can anybody confirm this?

This being the case does anybody know if I can configure GCC to access
two different memory types?

Has anybody used the backup memory on the LPC23XX series or other
Phillips controllers? Did you have a similar experience and how do
you get around it?

Regards, James Brown