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'[EE] Dual Core MCUs'
2007\11\22@020920 by Xiaofan Chen

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www.esemagazine.com/index.php?option=com_content&task=view&id=422&Itemid=0

In paticulat the TMS570 seems to be interesting, it uses two
identical ARM(R) Limited Cortex™ R4 cores for functional
safety (IEC61508) SIL3 application.
http://focus.ti.com/docs/pr/pressrelease.jhtml?prelId=sc06199

Atmel CAP is also kind of interesting.


Xiaofan

2007\11\22@045704 by Alan B. Pearce

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>In paticulat the TMS570 seems to be interesting, it uses two
>identical ARM(R) Limited Cortex™ R4 cores for functional
>safety (IEC61508) SIL3 application.

How long before there is a dual or quad core PIC32 ... ???

2007\11\22@083008 by Xiaofan Chen

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On Nov 22, 2007 5:56 PM, Alan B. Pearce <spam_OUTA.B.PearceTakeThisOuTspamrl.ac.uk> wrote:
> >In paticulat the TMS570 seems to be interesting, it uses two
> >identical ARM(R) Limited Cortex™ R4 cores for functional
> >safety (IEC61508) SIL3 application.
>
> How long before there is a dual or quad core PIC32 ... ???
>

Do not count on Microchip. PIC32 is not even available commercially.
Normally Microchip is a follower. PIC32 might be an exception.

Actually I think Microchip still gets most of the revenue from
OTP and Flash PIC12/16/18. Just found out my old design
in the previous job using 16C72A now reaches about 200kpcs
per year (16C72A). The OTP parts just start to decline due
to the replacement to Flash from some big automotive customers.

And to me many 18F costs too high. 18J and PIC24 are more
reasonably priced.

Xiaofan

2007\11\22@160931 by Lucas Korytkowski

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A lighter-weight version of this chip maybe?
http://www.linuxdevices.com/news/NS4743838569.html

- drop 3 of the ethernet ports
- x1 PCI express should suffice
- add USB 3.0 (won't really need PCI-E at that point)
- on-board 1MB flash
- on-board 16MB DDR2 SDRAM
- and all of the other "PIC peripherals" that we're used to...

Then port FreeBSD and go from there. :D

-----Original Message-----
From: .....piclist-bouncesKILLspamspam@spam@mit.edu [piclist-bouncesspamKILLspammit.edu] On Behalf Of
Alan B. Pearce
Sent: November 22, 2007 4:57 AM
To: Microcontroller discussion list - Public.
Subject: Re: [EE] Dual Core MCUs

>In paticulat the TMS570 seems to be interesting, it uses two identical
>ARM(R) Limited CortexT R4 cores for functional safety (IEC61508) SIL3
>application.

How long before there is a dual or quad core PIC32 ... ???

2007\11\23@034517 by Vasile Surducan

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On 11/22/07, Alan B. Pearce <.....A.B.PearceKILLspamspam.....rl.ac.uk> wrote:
> >In paticulat the TMS570 seems to be interesting, it uses two
> >identical ARM(R) Limited Cortex™ R4 cores for functional
> >safety (IEC61508) SIL3 application.
>
> How long before there is a dual or quad core PIC32 ... ???

PIC32 is so lazy will never count if it's dual or four core.

2007\11\24@010652 by William \Chops\ Westfield

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>> How long before there is a dual or quad core PIC32

Never, I would think.  You don't add more cores to a 72MHz ARM
except for very specialized applications, you just go to a faster
core.  The whole idea of a 32bit "microcontroller" is to address
the non-specialized applications.

I think we did a 4x4 array of ARM cores in a prototype packet
switching ASIC (The production version used a proprietary CPU.)
A fine example of a very SPECIALIZED application.  This is very
much different than something that's supposed to compete with
8-bit microcontrollers...

BillW


2007\11\24@070927 by Xiaofan Chen

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On Nov 24, 2007 2:06 PM, William Chops Westfield <EraseMEwestfwspam_OUTspamTakeThisOuTmac.com> wrote:
>
> >> How long before there is a dual or quad core PIC32
>
> Never, I would think.  You don't add more cores to a 72MHz ARM
> except for very specialized applications, you just go to a faster
> core.  The whole idea of a 32bit "microcontroller" is to address
> the non-specialized applications.

True. But TI is quite right to come out a dual core MCU
for IEC61508 SIL3 application.
http://focus.ti.com/docs/pr/pressrelease.jhtml?prelId=sc06199

Cortex R4 is not really designed to compete with high-end
8-bit though. Maybe TI should come out a lower-end
dual core ARM7/Cortex M3 MCU for other SIL3 applications.

Xiaofan

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