Lpc2000

--- In lpc2000@yahoogroups.com, "lpc2100_fan" <lpc2100_fan@...> wrote:
>
> --- In lpc2000@yahoogroups.com, "Leon Heller" <leon.heller@> wrote:
> >
> > ----- Original Message ----- 
> > From: "K B Shah-lascaux" <kbshah@>
> > To: <lpc2000@yahoogroups.com>
> > Sent: Wednesday, March 15, 2006 5:02 PM
> > Subject: Re: [lpc2000] ARM Thruput expectations
> > 
> > 
> > > Running from Flash is also fast...
> > > Look at pipeline architecture....
> > > LPC series  from Philips semi. has memory accelerator module 
(MAM)
>  that 
> > > allows instruction and data fetch in advance ...
> > >
> > > k b
> > >  ----- Original Message ----- 
> > >  From: raweaver06
> > >  To: lpc2000@yahoogroups.com
> > >  Sent: Wednesday, March 15, 2006 11:36 AM
> > >  Subject: [lpc2000] ARM Thruput expectations
> > >
> > >
> > >  I'm looking into using ARM so I'm a newbie.  I currently use a
> > >  processor that is 16 bits 30MIPS capable.  So seeing that ARM 
is 32
> > >  bits and 60 MIPS capable has me wanting.  I've read that real
> world is
> > >  actually 52 MIPS (still above my baseline 30 MIPS).  But then
> I've seen
> > >  where you have to run 1/4 speed out of FLASH.  So is the 52 
MIPS
> number
> > >  just running out of RAM?  I'll need most of my RAM for
> application so I
> > >  want the program to stay in FLASH.  Does running out of FLASH
> mean 52/4
> > >  for only 13 MIPS thruput.  I might as well stay with my current
> > >  processor if so.  I might as well stop reading all of this ARM
> > >  documentation if this is true.
> > 
> > The Philips ARM chips can run at full speed from flash, it has 
a128 bit 
> > interface which speeds it up. They can't toggle outputs very fast,
> the newer 
> > chips have faster I/O but it's still nothing like the instruction 
rate.
> > 
> > Leon
> >
> 
> Hi Leon,
> 
> the newer versions with fast I/O can not toggle as fast as the
> instruction rate, true, but half as fast!  So you can get a pin
> toggled every other clock cycle resulting in a possible outpur
> frequency of e.g. 60/4 = 15.
> 
> I happen to know that many people compare this to the AVR ;-) You
> would need a 30 MHz AVR to do this.
> 
> Bob
>
Newer AVRs can toggle a pin in 1 cycle ;-) Aren't comparisons 
wonderful.

Jim