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???
06/10/13 23:17
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#189912 - Silabs
Responding to: ???'s previous message
Maarten Brock said:
Have you looked at the C8051F99x which comes in QSOP-24 package?
It has the lowest power consumption SiLabs can deliver (downto 10nA deep sleep).
It is programmed through the 2 wire C2 interface (3 if you include GND).
But you will need level converters for 5V.

It looks fine, except the last bit, which is a deal breaker. There's no space for an extra 3V regulator and a level converter. How about something like the C8051F537A? It's a more or less random Mouser pick, but it looks suitable.

Mikkel

List of 44 messages in thread
TopicAuthorDate
Low-power MCU needed            01/01/70 00:00      
   OK, but wrong            01/01/70 00:00      
      Wrong how?            01/01/70 00:00      
         Silabs options            01/01/70 00:00      
            C8051F99x            01/01/70 00:00      
               Silabs            01/01/70 00:00      
                  look it up            01/01/70 00:00      
                     Looked up            01/01/70 00:00      
                        f53, no            01/01/70 00:00      
                        C8051F537A is OK            01/01/70 00:00      
         the current in active mode is not the issue            01/01/70 00:00      
            Inactive current            01/01/70 00:00      
         re: wrong            01/01/70 00:00      
            Consumers            01/01/70 00:00      
   Zilog Z51F0410             01/01/70 00:00      
      Zilog            01/01/70 00:00      
   Check you are entering idle ?            01/01/70 00:00      
   idle current            01/01/70 00:00      
      Idle test            01/01/70 00:00      
         re:            01/01/70 00:00      
            It floats! It floats!            01/01/70 00:00      
               re:floats            01/01/70 00:00      
               re:floats            01/01/70 00:00      
                  Timers            01/01/70 00:00      
         More idle tests            01/01/70 00:00      
            Better regulator?            01/01/70 00:00      
               LR8K4 450V regulator             01/01/70 00:00      
         also try CLKREG            01/01/70 00:00      
            Clk Dividers are a good idea            01/01/70 00:00      
               No dividers            01/01/70 00:00      
                  LP52 is cheaper too...            01/01/70 00:00      
                     LP52            01/01/70 00:00      
                        No GND pin?            01/01/70 00:00      
         re:idle            01/01/70 00:00      
         Totally idle            01/01/70 00:00      
            Checks            01/01/70 00:00      
               More checks            01/01/70 00:00      
                  Power Down ?            01/01/70 00:00      
                  test setup            01/01/70 00:00      
   STC            01/01/70 00:00      
      C8051F86x/85x ?            01/01/70 00:00      
      Maybe not such a good choice, after all?            01/01/70 00:00      
         Support?            01/01/70 00:00      
            '51 support            01/01/70 00:00      

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