[sdiy] dspic 30F and 33F

Eric Brombaugh ebrombaugh1 at cox.net
Thu Jan 14 01:04:13 CET 2010


On 01/13/2010 04:30 PM, karl dalen wrote:
> Are there any other major differences besides
> +5V and 30 mips between dspic 30f and 33f?
>
> The core and dsp capability seams the same?

Yep - Instruction set is identical. Main differences are:

* 33F has no EEPROM
* 33F Flash endurance is rated lower (only 1000 cycles)
* 33F has much lower power dissipation
* 33F runs 40MIPS vs 30MIPS max for 30F
* 33F uses 2 clock cycles per machine cycle, 30F uses 4 (I think)
* 33F has peripherals not available on 30F
   - Audio DAC
   - Pin Mux for peripheral I/O routing
   - PMP parallel port
   - others?
* 33F has more complex memory protection mechanisms

Those are the main ones I'm aware of.

Eric



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