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Does the openMSP430 support memory size higher than 64kb?
by dabujin3 on Sep 1, 2015
dabujin3
Posts: 3
Joined: Apr 2, 2012
Last seen: Nov 11, 2015
I'm trying to use openMSP430.
But I expect sum of program memory and data memory would be more than 64kB.
In the manual, sum of program memory and data memory could't exceed 64kB.
But after that, In advanced configuration, expert could change the size.

I'm really not sure about what it means.

Please reply above questions, if you guys knows anything.

Thanks
RE: Does the openMSP430 support memory size higher than 64kb?
by olivier.girard on Sep 1, 2015
olivier.girard
Posts: 21
Joined: Jan 9, 2009
Last seen: Aug 29, 2023
Hi Dabujin,

As the R0/PC register (i.e. Program Counter) of the openMSP430 is a 16 bit register, it can only address 64kB of memory� thus the limitation.

So what the manual means is that whenever you configure the program, data and peripheral memory sizes, you should make sure that the sum doesn�t exceed 64kB� otherwise the core won�t work properly.

Also note that the custom sizes that can be set in the "expert" section are meant to be used if the available sizes in the "Basic" and "Advanced" do not satisfy your requirements.

Hope this helps,
Oliv'
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