25MHz MSP430?

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Greetings:

A few months ago at a TI seminar on the MSP430, they mentioned in about
a year they would release 25MHz parts.  I'm drooling to get my hands on
these.

Any other rumors about these yet?


Good day!

--
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Christopher R. Carlen
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Re: 25MHz MSP430?



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No, but I've heard of someone running a standard 8 MHz part at 16 MHz. 8-)

Leon


Re: 25MHz MSP430?

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I've run these at 11.059MHZ at 3.3v
without any problem for the last year.
speed's not my issue.. RAM is..
can't wait for the larger ram versions...



Re: 25MHz MSP430?
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Hi,
I am absolutely sure it is no problem for TI to generate a 25 MHz
version of the MSP430. The challenge is to do this without
compromising the power consumption. You can engineer a device for
minimum power (that's where the MSP 430 shines!!) OR for high speed.
Well 25 MHz is not exactly high speed but it is probably high enough
to increase power consumption in the ultra low power modes. It is
similar to an engine and mileage. A 300hp engine will have a tough
time giving you 30 miles/gallon while the Prius would be similar to
the MSP430, providing reasonable speed and very good mileage. (no, I
am NOT a car salesman ;-)
In an nutshell, having a low power microcontroller in itself is
doable, having a fast one too, having the combination that is where
the laws of physics start to get really annoying.
Cheers, Schwob

Re: 25MHz MSP430?
snipped-for-privacy@aol.com (Schwob) writes:

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I'd like to disagree -- at least at this speed/power level. Quite
often you can get a very low power consumption by running a fast
processor at a low speed. For example, the Atmel ARM processors
run with very little power when run at a few megahertz, even though
the nominal maximum is 66 MHz.

The same applies to TI DSPs, so TI should have the technology
to produce a low-voltage high-speed device. Narrow gate width
technology both reduces the power consumption (per MHz) and
increases the maximum speed. (However, there may be some
difficulties in combining the fast processor and flash memory.)

Of course, the current consumption of a static CMOS core is
directly proportional to the voltage and clock frequency. So,
a processor cannot be fast and consume little power at the same
time. But increasing the maximum clock frequency does not
necessarily increase the power consumption per megahertz.

- Ville

--
Ville Voipio, Dr.Tech., M.Sc. (EE)

Re: 25MHz MSP430?
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 This is true for a given FAB process - that speed/power has a trade off,
and that smaller processes have lower uA/MHz.
 Where the problems arise, is when the FAB process is tuned for SPEED,
and/or agressively shrunk.
 FPGAs ( & Pentiums) are a good example : They are 'speed paranoid'
in process, and their static Iccs have gone up to tens or hundreds of mA.

 Still, for the uC space where IDLE Icc is quite important, look at the
Philips LPC21xx / Cygnal C8051F  for indications of where the speed.Idle
can go.
 Cygnal get to 100MHz peak and Philips to 60MHz, both by using wider
FLASH fetch.

-jg



Re: 25MHz MSP430?

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I do agree. But if we talk about s 25 MHz uC, this scenario is not very
near. In the case of PC processors, power efficiency of the core has
not played an important role.

- Ville

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Ville Voipio, Dr.Tech., M.Sc. (EE)

Re: 25MHz MSP430?

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If only they'd do one with an external bus option...

Paul Burke




Re: 25MHz MSP430?
snipped-for-privacy@scazon.com says...
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Do you want to implement memory-mapped peripherals?

As it is now, you can get versions where the flash and RAM
fill all the address space not use by registers and peripherals.

It would be nice to have at least an 8-bit external data bus
and about 8 bits of address and chip selects to connect more
efficiently to devices such as  CF cards, network interfaces,
etc.

AFAIK, it would take major architectural changes to expand the
memory addressing past the current 64K.

Mark Borgerson


Re: 25MHz MSP430?

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Yes, but most versions have a few spare K in the 64, and there are
several projects where I want the thing to run faster than I can get
with a manually manipulated external bus. Experimenting with the
Z80-Acclaim thingies at the moment, anyone else tried these out, any
comments?

Paul Burke


Re: 25MHz MSP430?
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I have not tried any Zilog stuff in the last 20 years or so since I quit
working with Z80s.  But I looked very hard at using the MSP430 in my
current design and decided to instead use an OKI ARM chip.  It may not
be sub mW, but it can run at low mW power levels or can run at 60 MHz
with a 32 bit CPU.  It has lots of internal RAM and Flash along with a
fairly good assortment of IO.  ML67Q5003 is the flagship chip and is
under $10 in 100's.  Not bad for a 32 bit chip.  

Oh yeah, and it has an external bus :)

--

Rick "rickman" Collins

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Re: 25MHz MSP430?
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I have heard that this is in the works.  But don't ask me where I heard
it, I can't remember.  

--

Rick "rickman" Collins

snipped-for-privacy@XYarius.com
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Re: 25MHz MSP430?
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They can't address more than 64K though and everyone who worked with
PICs hates banking for sure ;)

Best regards
Tsvetan
---
PCB prototypes for $26 at http://run.to/pcb
(http://www.olimex.com/pcb )
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Re: 25MHz MSP430?
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At least code-space banking can be done elegantly: See HCS12.

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42Bastian
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Re: 25MHz MSP430?
snipped-for-privacy@yahoo.com (42Bastian Schick) writes:
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You call that elegant?!?  How do you spell klooj?

Re: 25MHz MSP430?

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As I've said, I don't want more than 64k total, just to make the holes
available (say the 12k spare in F148), just so I can hang bus oriented
peripherals on.

Paul Burke


Re: 25MHz MSP430?
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it would be cool if they manage to keep the 200 uA consumption at this
speed
actually in all our apps we did with MSP430 (mostly battery powered
stuff) never happend to need more than 1MHz clock to perform
everything we had to do, in matter of fact most of the time we put
MSP430 in 2uA LPM3 sleep mode  ;)

Best regards
Tsvetan
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PCB prototypes for $26 at http://run.to/pcb
(http://www.olimex.com/pcb )
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