??? 06/24/10 13:52 Read: times |
#176893 - ARM 'MCUs' have their limitations too! Responding to: ???'s previous message |
Andy Neil said:
Oliver Sedlacek said:
The programmer isn't burdened with the having to worry about limited iram, xram, register banks and stack space. Indeed. It's when you're fighting these specific limitations that you should be thinking about changing architecture - unless there's other specific advantages of the 8051 that outweigh these limitations. Agreed. Now it's all very well (and in many cases even desirable) to have access to very large linear memory spaces, but what about the low pin-count ARM variants i.e. with limited internal RAM/ROM and no means of external code memory expansion? You do still have to keep track of things like available flash code and variable data RAM spaces for your given application - especially if you are stuck with a given package style with little or no code memory upgrade path.. Of course, this is all part of the design process and the above would probably hold equally true for just about any low pin-count device, be it 8051, PIC or ARM etc.. Regards, Valentin |