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???
11/16/12 08:28
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 		 #188837 - 5V can be surprisingly useful
Responding to: ???'s previous message
I've just been working on an automotive design and I'm faced with the choice of an underpowered 5V micro, a more powerful 3.3V micro with level shifters to interfacae with 5V peripherals, or replacing all the peripherals with 3.3V alternatives. A suitable 5V micro would occasionally make my life easier.

The ARM chips regulate the supply down internally to 1.2-1.8V to power the core and presumably have level shifters for the IO, so you would have thought it wouldn't be that hard to do 5V.

List of 37 messages in thread
TopicAuthorDate
NXP stated aim, "to make 8-bit architectures obsolete"            01/01/70 00:00      
   Available in DIP!            01/01/70 00:00      
      no continuity            01/01/70 00:00      
         It gets worse.            01/01/70 00:00      
            We need a small package            01/01/70 00:00      
               Not small enough            01/01/70 00:00      
                  Funny, that!            01/01/70 00:00      
                     Nice size, shame about price            01/01/70 00:00      
            Poor NXP, XMC1000 series announced            01/01/70 00:00      
   No 5V option            01/01/70 00:00      
      just curious            01/01/70 00:00      
         Because it is useful.            01/01/70 00:00      
         RE: why the 5V fascination?             01/01/70 00:00      
            well, you will have to redesign anyhow.            01/01/70 00:00      
         Power MOSFET drive and 5V ADC            01/01/70 00:00      
         5V can be surprisingly useful            01/01/70 00:00      
            Most Automotive parts DO use 5V            01/01/70 00:00      
            why?            01/01/70 00:00      
               Close, but no Cigar...            01/01/70 00:00      
                  MOSFET driver            01/01/70 00:00      
                     Silabs 6V ports for Class D audio            01/01/70 00:00      
                     which means they were thinking about logic-level MOSFET driv            01/01/70 00:00      
                        I was looking for something like this            01/01/70 00:00      
                           isn't it a pity ..            01/01/70 00:00      
                              this            01/01/70 00:00      
                                 but that is ~15 bucks :)            01/01/70 00:00      
                                    for one off            01/01/70 00:00      
                                       four bucks!            01/01/70 00:00      
                                 Not 8051            01/01/70 00:00      
                                    HUH?            01/01/70 00:00      
                                       What??? Which SiLabs clocks at >168E6?            01/01/70 00:00      
                                          he means higher than 80Mhz            01/01/70 00:00      
                           just wait            01/01/70 00:00      
                        MOSFET drive            01/01/70 00:00      
               More than 5V tolerant inputs            01/01/70 00:00      
   yeah and your problem is?            01/01/70 00:00      
   You ask me Andy            01/01/70 00:00      

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