Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
03/09/11 20:39
Read: times


 		 #181517 - Oxide thickness
Responding to: ???'s previous message
Per Westermark said:
Note that the voltage span supported indirectly indicates the "quality" of the manufacturing plant.

People with newer plants supporting finer feature sizes normally sells 3V3-only chips that draws very little current. Production of 5V-supporting chips needs to either integrate voltage regulator support, or design the chip in a feature size that can handle 5V without too high electric field strength.


Close, but more accurate is that the oxide thickness is what determines voltage, and the newest FABs can commonly now handle more than one oxide thickness at a given lithography level.

That's how, by using both fine lithography, and multi-oxides, they are able to deliver Wide Vcc parts.

Toshiba claim this, about their new Cortex 5V series

["The TMPM380 MCU offers a 5V operation, which delivers better immunity to system noise than a comparable 3V MCU and easier interfacing with other 5V components."]



List of 65 messages in thread
TopicAuthorDate
NXP suggests 32-bit ARM Cortex-M0 family for 8-bit replaceme            01/01/70 00:00      
   Funny indeed!            01/01/70 00:00      
      Rest of NXP's 8051 line to follow..?            01/01/70 00:00      
         comments            01/01/70 00:00      
            I've been watching them for 20 years now ...            01/01/70 00:00      
               So, what to do?            01/01/70 00:00      
                  Biting the ARM bullet            01/01/70 00:00      
                  SST89E58            01/01/70 00:00      
                  Well, if I had to do something ...            01/01/70 00:00      
                     Linux?            01/01/70 00:00      
                        Just a thought ...            01/01/70 00:00      
                     Leaping to Linux would be ludicrous!            01/01/70 00:00      
                        Unless...            01/01/70 00:00      
                           The target wouldn't necessarily be the host            01/01/70 00:00      
                              I don't ever build on target hardware unless target is a PC            01/01/70 00:00      
                        Supplement - not replace            01/01/70 00:00      
                           I can't disagree            01/01/70 00:00      
                              Competition always needed            01/01/70 00:00      
                              not everyone wants the 805x to survive            01/01/70 00:00      
                                 newer '51 releases            01/01/70 00:00      
                        It depends on your ultimate goal ...            01/01/70 00:00      
                     Real cheap ARM eval boards            01/01/70 00:00      
                        ADuC ARM            01/01/70 00:00      
                           Nearly, ADuC702X            01/01/70 00:00      
                        Yes! Lots of Real cheap ARM eval boards!!            01/01/70 00:00      
                           Why go cheap ...            01/01/70 00:00      
                              Prototyping can interfere with extras            01/01/70 00:00      
                                 "nfity" != "useful" or "helpful" (necessarily)            01/01/70 00:00      
                                 That's often a problem with EvK's            01/01/70 00:00      
                                    50/50 Agree/Disagree            01/01/70 00:00      
                                       Perhaps you're right about the second point            01/01/70 00:00      
      Cortex-M0s            01/01/70 00:00      
         "low end"            01/01/70 00:00      
            How low is "low" ?            01/01/70 00:00      
            money            01/01/70 00:00      
               Depends on view            01/01/70 00:00      
                  the small embedded view            01/01/70 00:00      
                     yes            01/01/70 00:00      
                        applications of low pin count            01/01/70 00:00      
                           Either help with real-time or with wire count/length            01/01/70 00:00      
               Money and technology            01/01/70 00:00      
                  ARM core already tiny enough that you gain no more            01/01/70 00:00      
                     Fab costs            01/01/70 00:00      
                        Old fabs or old fab equipment            01/01/70 00:00      
               Other Meanings            01/01/70 00:00      
   Colonial English            01/01/70 00:00      
      No new models            01/01/70 00:00      
         End of the roadmap            01/01/70 00:00      
   Anachronism            01/01/70 00:00      
      Quite common to extend meaning of old terms            01/01/70 00:00      
   a bit related            01/01/70 00:00      
      Doesn't add any advantage so totally cornered            01/01/70 00:00      
         16-bitters            01/01/70 00:00      
            I think you missed the point            01/01/70 00:00      
   NXP 8051s            01/01/70 00:00      
      you are a bit slow            01/01/70 00:00      
         you are a bit slow            01/01/70 00:00      
            lots of power needed to swing 5V devices            01/01/70 00:00      
               not just the swing            01/01/70 00:00      
                  The area myth gets busted            01/01/70 00:00      
                     Long time since chips started to get different scaling            01/01/70 00:00      
         Wide Vcc is growing trend            01/01/70 00:00      
            no such ceiling, just no avoidance            01/01/70 00:00      
      3V3 or 5V            01/01/70 00:00      
         Oxide thickness            01/01/70 00:00      

Back to Subject List