MSP430 Memory
MSP430 Memory
Memory Map
We present the MSP430F5529 memory map as an example of what you find on most MSP430’s.
It’s certainly what we’ll see as we work though the lab exercises in this workshop.
A couple of important – and beneficial – points about MSP430’s memory map:
• The MSP430 defines a unified memory map. This means that, technically speaking, data
and program code can be located anywhere in the available memory space. (This doesn’t
mean it’s practical to locate global variables in flash memory, but the architecture does not
prevent you from doing so.)
• The MSP430, as stated earlier (see page 1-13), is implemented using 20-bit addressing;
therefore, the MSP430 can directly address the full 1M memory map without resorting to
paging schemes. (If you have ever had to deal with paging, we expect you might be cheering
at this point.)
Flash
Like most MCU’s nowadays, the processor is dominated by non-volatile memory. In this case,
Flash technology provides us with the means to store information into the device – which retains
its contents, even when power is removed. (As we’ll see next, some of the latest MSP430 devices
use FRAM technology rather than Flash.)
MSP430 Workshop - Introduction to MSP430 1 - 17
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