But Xeon has millions of transistors. How many transistors are
there in a dsPIC? How big is the die area for a dsPIC?

If a SX28 consumes 100mA at 75MHz, then I think it is reasonable
that dsPICs will consume 140mA at 32MIPS (128MHz internally) since
it will be more complex than a SX28. I have not yet try to run
any logic ICs at 75Mhz. Maybe it will be interesting to do it.

Regards,
Xiaofan

-----Original Message-----
From: William "Chops" Westfield [mailto:westfw@mac.com]
Sent: Friday, July 01, 2005 4:21 PM
To: Microcontroller discussion list - Public.
Subject: Re: [PIC] dsPIC current consumption at 30MIPS

A 3.2GHz Intel Xeon dissipates upwards of 90W.
1.8Ghz Pentium-M (mobile) are down below 30W and have similar
performance.  :-)

More relevantly, a scenix (ubicom) SX28 (similar to 16F57, but
does instructions in one clock at 75MHz) is spec'ed at about 100mA
at 75Mhz (about 75MIPS, but some methods of counting.)  That seems
to be a common consumption for CMOS chips operating in that clock
range (GALS and even 74xxx login for that sort of frequency also
seem to run 100mA per chip...)

BillW
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