next-generation PMU discussion / Memory 1.8V

joerg at joerg at
Mon Apr 21 14:00:24 CEST 2008

Very sure our RTC should move from PMU to MPU.
So is there any more need to have a backup battery for the PMU? Can we share 
the battery between 50366 and 430?

Andy: ts scanning won't keep the MPU awake, a touch is triggering a 
hw-interupt on the A/D-input of 430. So no touch, no op (not even NOP ;)

So anybody here who's unhappy with the MSP430FG4618?
Before I start to read the next 100 pages of manual to check if it meets our 

Am Fr  18. April 2008 schrieb Werner Almesberger:
> Andy Green wrote:
> > Lots of nice features in it.
> Indeed. But a bit large, about 100mm2 footprint. If this is an issue,
> there are also BGA options. E.g., the MSP430FG4619IZQWR in a 7x7mm BGA.
> It seems a bit pricy, though.

I'd suggest MSP430FG4618. More RAM (8K) than xx19. Price of this CPU (and all 
xx461x) 12.95$. 
Even MSP430F157 is 7.35$, and it got only 1k RAM. And the large footprint.


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