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'[PIC] Upgrade Path?'
2007\07\27@125734 by Harold Hallikainen

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I'm currently using the PIC24H in new designs with external USB (FT245R),
Ethernet (Lantronix xPort), external graphic LCD drive (CPLD and RAM), and
external flash to hold Unicode character bitmaps. Even with the 40MIPS of
the 24H, the processor is having a hard time keeping up. I'm also
concerned that moving some of these resources on chip will use too many
MIPS, leaving me even shorter. So... where should I head when looking for
higher performance and more integration than the 24H? People here are
suggesting an ARM based device, which I know little about. Is this a good
direction? Does anyone have any idea where Microchip is going? Any chance
of 80MIPS or more on the 24H?

THANKS!

Harold


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2007\07\27@141719 by John Chung

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ARM does have some running at much higher speeds. You
can check on NXP which is one of the market leaders.
So far there are quite a few other offering besides
the
ARM but the problem is that none of them are that
commited with it. I wouldn't want to design a product
around them. ARM is a good step to higher end uC.

John


--- Harold Hallikainen <spam_OUTharoldTakeThisOuTspamhallikainen.org> wrote:

{Quote hidden}

> --

2007\07\28@000548 by Chetan Bhargava

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If you need higher throughput go with ARM7TDMI, or maybe higher to
ARM9 depending on your needs. You can take a look at NXP LPC2000
series micros. These are low pin count (48 pins or more) general
purpose devices with flash. GNU toolchain is available for ARM with
good support.

Regards


On 7/27/07, Harold Hallikainen <.....haroldKILLspamspam@spam@hallikainen.org> wrote:
{Quote hidden}

--
Chetan Bhargava
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2007\07\28@000648 by Chetan Bhargava

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Forgot to send the link. Here it is.
http://www.nxp.com/#/pip/cb=[type=product,path=50809/45993/45994,final=LPC2104_2105_2106_6]|pip=[pip=LPC2104_2105_2106_6][0]

On 7/27/07, Chetan Bhargava <cbhargavaspamKILLspamgmail.com> wrote:
{Quote hidden}

--
Chetan Bhargava
Web: http://www.bhargavaz.net
Blog: http://microz.blogspot.com

2007\07\28@001102 by Xiaofan Chen

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On 7/27/07, Harold Hallikainen <EraseMEharoldspam_OUTspamTakeThisOuThallikainen.org> wrote:
> I'm currently using the PIC24H in new designs with external USB (FT245R),
> Ethernet (Lantronix xPort), external graphic LCD drive (CPLD and RAM), and
> external flash to hold Unicode character bitmaps. Even with the 40MIPS of
> the 24H, the processor is having a hard time keeping up. I'm also
> concerned that moving some of these resources on chip will use too many
> MIPS, leaving me even shorter. So... where should I head when looking for
> higher performance and more integration than the 24H? People here are
> suggesting an ARM based device, which I know little about. Is this a good
> direction? Does anyone have any idea where Microchip is going? Any chance
> of 80MIPS or more on the 24H?
>

Wow that is a lot! Perhaps an ARM9 or similar class of  MCU will be
better choice. Atmel/NXP/ST/etc have quite some parts. Maybe
even an RTOS is warranteed in this case. Freescale ColdFire
might be a good choice (some of them with built-in Ethernet
and maybe LCD).

According to some rumors, Microchip will soon come out 32bit PIC32. Not
so sure what is the core based. Not ARM according to the rumor.

Xiaofan

2007\07\30@082059 by Alan B. Pearce

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> Does anyone have any idea where Microchip is going? Any chance
> of 80MIPS or more on the 24H?
>

I thought the 30F devices were capable of 120MIPS, isn't the 24 series
capable of the same?

2007\07\30@101554 by Xiaofan Chen

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On 7/30/07, Alan B. Pearce <A.B.Pearcespamspam_OUTrl.ac.uk> wrote:
> > Does anyone have any idea where Microchip is going? Any chance
> > of 80MIPS or more on the 24H?
> >
> I thought the 30F devices were capable of 120MIPS, isn't the 24 series
> capable of the same?
>

No dsPIC30F tops at 30MIPS. dsPIC33F and PIC24H top at 40MIPS currently.

Xiaofan

2007\07\30@120236 by Alan B. Pearce

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>No dsPIC30F tops at 30MIPS. dsPIC33F and PIC24H top at 40MIPS currently.

Ah, I must be thinking MHz then ...

2007\07\30@141753 by James Newtons Massmind

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> >No dsPIC30F tops at 30MIPS. dsPIC33F and PIC24H top at
> 40MIPS currently.
>
> Ah, I must be thinking MHz then ...

The little SX chips from Parallax are about the only thing that can do more
and be code compatible with the smaller PICs.

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2007\07\30@162435 by Xiaofan Chen

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On 7/30/07, James Newtons Massmind <KILLspamjamesnewtonKILLspamspammassmind.org> wrote:
> > >No dsPIC30F tops at 30MIPS. dsPIC33F and PIC24H top at
> > 40MIPS currently.
> >
> > Ah, I must be thinking MHz then ...
>
> The little SX chips from Parallax are about the only thing that can do more
> and be code compatible with the smaller PICs.

Unfortunately they are not compatible with dsPIC/PIC24 which is very
different than PIC18C/18F, let alone the 16C5x/16F5x.a different.

The other high speed 8-bit is Silabs which can do 100MIPS. If they
comes with more DIP packages, I do not see the reason of the
need for the SX.

Regards,
Xiaofan

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