RE: [avr-gcc-list] atmega16 vs. atmega32

[James . Harris]

Another (very subtle) difference is the MCUCR used for power management:
The positions of the SE and CM2 bits are swapped between Mega16 and Mega32.

/James Harris



                                                                                
                                                      
                    "Dave Hansen"                                               
                                                      
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                    avr-gcc-list-bounce        Subject:     RE: [avr-gcc-list] 
atmega16 vs. atmega32                                  
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                    05/08/2004 07:31 AM                                         
                                                      
                                                                                
                                                      
                                                                                
                                                      



From: Reza Naima <address@hidden>

>
>I ran out of flash on the atmega16, and the atmega32 seems identical but
>with more memory.  I just wanted to ask if this was the case.  The pin

We went the other way (existing product used mega32, prototype new product
on mega32,  eventual product uses mega16).

The differences are slight, but they're enough to prevent binary
compatibility.  The biggest difference I remember is that the location (and

thus the priority) of some of the interrupt vectors changed.  So a
recompile
will be necessary, but source code should be identical (or nearly so).

HTH,
   -=Dave

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