Lpc2000

--- In lpc2000@yahoogroups.com, "croquettegnu" <croquettegnu@...> wrote:
>
> Thanks a lot !
> Got it !
> 
> In fact, for sequential read code, we can reach 0 wait state at full
> speed but for non sequential operations, when MAMTIM=3, we will add 2
> wait states for each read ... Am I correct ?
> 
> And to be able to reach 0 wait state at 60MHz, according to the
> errata, we must have MAMTIM=3 and have the MAM enabled, does it mean
> that we must in ll cases use the MAM ?
> 

I believe the only reason not to use MAM is if you want fully 
deterministic speed of access to the on-board flash. However, this is 
rare enough requirement on processors such as ARM, where using speed of 
execution as a method of acurate timing is a poor choice (due to 
variable length of instructions, pipeline issues etc.).

Apart from the speed improvement, I believe there's also a current 
consumption reduction if you use MAM as well.