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Jim Granville
03/09/11 12:10
Read: 964 times


 
#181514 - Wide Vcc is growing trend
Responding to: Erik Malund's previous message
Erik Malund said:

Moving to NXP-M0 is more wishful thinking, as they do not have 5V parts.


you are a bit slow, I left the "must be 5V club" 5 years ago.
There REALLY is no problem with 3V3
Erik


haha - then you do not use PowerMOSFETs.
The decision for 5V is not made by me as a fashion choice; as a designer I use the technology best suited to the task.

For directly driving power Mosfets (without wasteful pull up resistors and Multiple supplies), then a 5V part is the cleanest solution.

This used to be put in the 'too hard' box by chip designers, but a combination of customer demand, and more skill at mixing Analog & Digital, means many vendors now include the voltage regulators.

This makes perfect sense : My system design does not care what core voltage they choose, and I get to directly drive power FETS, with clean edges and low power. - and Analog IPs have wider dynamic range, and better noise tolerance.

Everyone wins.

There really is no excuse now for NOT supplying a Wide Vcc part.
Vendors want the widest possible available market, so they are doing this, in increasing numbers.

Besides the new Nuvoton chips in my example, Atmel have a wide Vcc AT32UC, and 5V ARMs are becoming MORE common, not less.

SiLabs newest Automotive parts, are all 5V operation, as is the PSoC from Cypress.

Freescale's newest wide Vcc small parts are quite impressive: they have buried regulators with no external decoupling pins.

So stick with a 3V3 ceiling if you want, I'll remain free to choose 3.3 OR 5V, depending on what best suits my design.



List of 65 messages in thread
TopicAuthorDate
NXP suggests 32-bit ARM Cortex-M0 family for 8-bit replaceme        Jan Waclawek      02/21/11 04:03      
   Funny indeed!      Andy Neil      02/21/11 05:15      
      Rest of NXP's 8051 line to follow..?      Valentin Angelovski      02/21/11 05:37      
         comments      Erik Malund      02/22/11 08:23      
            I've been watching them for 20 years now ...      Richard Erlacher      02/22/11 08:40      
               So, what to do?      David Good      02/22/11 09:58      
                  Biting the ARM bullet      Andy Neil      02/22/11 10:27      
                  SST89E58      Jan Waclawek      02/22/11 11:15      
                  Well, if I had to do something ...      Richard Erlacher      02/22/11 21:32      
                     Linux?      Per Westermark      02/22/11 22:34      
                        Just a thought ...      Richard Erlacher      02/24/11 07:15      
                     Leaping to Linux would be ludicrous!      Andy Neil      02/23/11 00:17      
                        Unless...      Andy Neil      02/23/11 01:07      
                           The target wouldn't necessarily be the host      Richard Erlacher      02/24/11 07:26      
                              I don't ever build on target hardware unless target is a PC      Per Westermark      02/24/11 07:54      
                        Supplement - not replace      Andy Neil      02/23/11 01:21      
                           I can't disagree      Richard Erlacher      02/24/11 07:29      
                              Competition always needed      Per Westermark      02/24/11 08:05      
                              not everyone wants the 805x to survive      Andy Neil      02/24/11 08:29      
                                 newer '51 releases      Erik Malund      02/24/11 08:44      
                        It depends on your ultimate goal ...      Richard Erlacher      02/24/11 07:18      
                     Real cheap ARM eval boards      Oliver Sedlacek      02/23/11 02:19      
                        ADuC ARM      Jan Waclawek      02/23/11 02:23      
                           Nearly, ADuC702X      Oliver Sedlacek      02/23/11 04:11      
                        Yes! Lots of Real cheap ARM eval boards!!      Andy Neil      02/23/11 02:36      
                           Why go cheap ...      Christoph Franck      02/23/11 03:19      
                              Prototyping can interfere with extras        Per Westermark      02/23/11 03:30      
                                 "nfity" != "useful" or "helpful" (necessarily)      Andy Neil      02/23/11 03:59      
                                 That's often a problem with EvK's      Richard Erlacher      02/24/11 07:36      
                                    50/50 Agree/Disagree      Andy Neil      02/24/11 08:21      
                                       Perhaps you're right about the second point      Richard Erlacher      02/25/11 02:05      
      Cortex-M0s      Christoph Franck      02/21/11 06:00      
         "low end"      Andy Neil      02/21/11 06:18      
            How low is "low" ?      Andy Neil      02/21/11 06:22      
            money      Jan Waclawek      02/21/11 06:30      
               Depends on view      Per Westermark      02/21/11 07:07      
                  the small embedded view      Jan Waclawek      02/21/11 07:38      
                     yes      Per Westermark      02/21/11 08:22      
                        applications of low pin count      Jan Waclawek      02/21/11 08:35      
                           Either help with real-time or with wire count/length      Per Westermark      02/21/11 08:47      
               Money and technology      Oliver Sedlacek      02/22/11 01:23      
                  ARM core already tiny enough that you gain no more      Per Westermark      02/22/11 02:24      
                     Fab costs      Oliver Sedlacek      02/22/11 03:58      
                        Old fabs or old fab equipment      Per Westermark      02/22/11 04:57      
               Other Meanings      Andrew Ayre      02/24/11 03:14      
   Colonial English      Andy Neil      02/21/11 14:32      
      No new models      Per Westermark      02/21/11 15:07      
         End of the roadmap      Andy Neil      02/21/11 15:49      
   Anachronism      Andy Neil      02/21/11 15:50      
      Quite common to extend meaning of old terms      Per Westermark      02/21/11 16:35      
   a bit related      Erik Malund      02/24/11 09:23      
      Doesn't add any advantage so totally cornered      Per Westermark      02/24/11 09:34      
         16-bitters      Jan Waclawek      02/24/11 11:11      
            I think you missed the point      Per Westermark      02/24/11 12:28      
   NXP 8051s      Jim Granville      03/08/11 20:33      
      you are a bit slow      Erik Malund      03/09/11 06:23      
         you are a bit slow      Andy Neil      03/09/11 09:14      
            lots of power needed to swing 5V devices      Per Westermark      03/09/11 11:06      
               not just the swing      Erik Malund      03/09/11 11:58      
                  The area myth gets busted      Jim Granville      03/09/11 13:28      
                     Long time since chips started to get different scaling      Per Westermark      03/09/11 13:48      
         Wide Vcc is growing trend      Jim Granville      03/09/11 12:10      
            no such ceiling, just no avoidance      Erik Malund      03/09/11 12:49      
      3V3 or 5V      Per Westermark      03/09/11 06:41      
         Oxide thickness      Jim Granville      03/09/11 13:39      

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