One of the great things of these technical forums is that eventually you can get very helpful answers, however unfortunately very often one has to put up with a fair few thoughtless replies in the process, many on the lines of read the f... manual... which obviously is a very enlightened hint... it's a shame when we do not give people the benefit of the doubt and assume they are stupid and/or lazy... and at the same time we don't bother to try to understand the question...
On the other hand Kudos to those that have kept the thread positive and useful, much appreciated, this is what makes forums worth while...
Anyway, moving on..
I don't have a particular MSP430 in mind, in fact i suspect that the start up times are probably much the same for all the members of the family... so if anyone is familiar with a particular model and can share the startup up times i'd be happy to hear about it.
I had established from the datasheet that the startup times when using DCO was in the order of us, and what i was hoping to find out was what the startup times were when using other clock sources.
Again, the purpose of my question is not to find out what clock sources are available for the MSP430, but to know the relationship between wakeup times (after being sent into the different sleep modes) and clock sources.
Accuracy and startup times are not really related, the startup time is dependent on how long it takes for the oscillator to stabilise, that's why in principle one would expect an RC oscillator to be much faster starting up than a crystal... but maybe the MSP430 has some tricks up its sleeve and somehow accelerates the process... which is what I'm hoping to establish.
OCY, could let me know in what datasheet or application note you've found that information please? i think it could be a very useful starting point.
Again, thanks to those that have given positive feedback