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LPC2xxx vs STR71x heresy?

LPC2xxx vs STR71x heresy?

2004-12-09 by tkreyche

I've been lurking this group for 6 months trying to decide when to 
dump 8-bit controllers for ARM7. The expertise in the group finally 
pushed me to get moving so I got an IAR 2106 kickstart kit, which so 
far seems to be a good intro.

One of my first projects requires 3 or 4 UARTS, so the options are to 
graft a dual or quad UART onto a 2138 or look elsewhere.

The STMicroelectronics STR71x looks very good - some features are 
superior to the LPC2xxx, such as 4 UARTS and 12-bit ADC.

Is this group strictly Philips LPC2xxx? Should I go elsewhere if I 
decide to use the STR71x? Are there any considerations to expand the 
group's scope?

thanks, Tom

RE: [lpc2000] LPC2xxx vs STR71x heresy?

2004-12-09 by Paul Curtis

> The STMicroelectronics STR71x looks very good - some features 
> are superior to the LPC2xxx, such as 4 UARTS and 12-bit ADC.
> 
> Is this group strictly Philips LPC2xxx? Should I go elsewhere 
> if I decide to use the STR71x? Are there any considerations 
> to expand the group's scope?

As far as I can tell, there are three "small" ARMs of interest: SAM7,
LPC2000, and STR7xx.  This group should not change its charter--it's for
people who want to know about LPC2000.  *However* comparing LPC2000 to
any other small integrated-flash ARM is enlightening for all: compare
features, price, support and so on.  As Philips monitor this forum, they
will see what customers want and how they compare to other parts (as if
they're not doing this already).  And this is a forum to answer
questions about the LPC, not the others, use another forum for that.

So, I'd say no change in charter, but certainly compare LPC to the
newcomers.  But, it's for Leon to make the judgement call.  But don't
open a poll about it.

--
Paul Curtis, Rowley Associates Ltd  http://www.rowley.co.uk
CrossWorks for MSP430, ARM, and (soon) Atmel AVR processors

RE: [lpc2000] LPC2xxx vs STR71x heresy?

2004-12-09 by Robert Adsett

At 03:05 PM 12/9/04 +0000, you wrote:

>
> > The STMicroelectronics STR71x looks very good - some features
> > are superior to the LPC2xxx, such as 4 UARTS and 12-bit ADC.
> >
> > Is this group strictly Philips LPC2xxx? Should I go elsewhere
> > if I decide to use the STR71x? Are there any considerations
> > to expand the group's scope?
>
>As far as I can tell, there are three "small" ARMs of interest: SAM7,
>LPC2000, and STR7xx.

Four, there is the ADuC series from Analog Devices as well.

>This group should not change its charter--it's for
>people who want to know about LPC2000.  *However* comparing LPC2000 to
>any other small integrated-flash ARM is enlightening for all: compare
>features, price, support and so on.  As Philips monitor this forum, they
>will see what customers want and how they compare to other parts (as if
>they're not doing this already).  And this is a forum to answer
>questions about the LPC, not the others, use another forum for that.
>
>So, I'd say no change in charter, but certainly compare LPC to the
>newcomers.  But, it's for Leon to make the judgement call.  But don't
>open a poll about it.

Agree'd.  One note about the STR chips.  Unlike the others they do not 
support serial ISP.  They were apparently planning to originally but 
support for it appears to have been dropped.  Generally with these parts 
it's not so much one part being superior to another but each one having 
it's own strengths and weakness.  One area that appears to be quite 
different across manufacturers is the interupt support.  Each company seems 
to have taken a different approach.  At least they are different enough 
there is little chance of confusing two of them.

Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,
be they legal, genetic, or physical.  If you don't believe me, try to
chew a radio signal. "

                         Kelvin Throop, III

RE: [lpc2000] LPC2xxx vs STR71x heresy?

2004-12-09 by Leon Heller

>From: "Paul Curtis" <plc@...>
>Reply-To: lpc2000@yahoogroups.com
>To: <lpc2000@yahoogroups.com>
>Subject: RE: [lpc2000] LPC2xxx vs STR71x heresy?
>Date: Thu, 9 Dec 2004 15:05:01 -0000
>
>
>
> > The STMicroelectronics STR71x looks very good - some features
> > are superior to the LPC2xxx, such as 4 UARTS and 12-bit ADC.
> >
> > Is this group strictly Philips LPC2xxx? Should I go elsewhere
> > if I decide to use the STR71x? Are there any considerations
> > to expand the group's scope?
>
>As far as I can tell, there are three "small" ARMs of interest: SAM7,
>LPC2000, and STR7xx.  This group should not change its charter--it's for
>people who want to know about LPC2000.  *However* comparing LPC2000 to
>any other small integrated-flash ARM is enlightening for all: compare
>features, price, support and so on.  As Philips monitor this forum, they
>will see what customers want and how they compare to other parts (as if
>they're not doing this already).  And this is a forum to answer
>questions about the LPC, not the others, use another forum for that.
>
>So, I'd say no change in charter, but certainly compare LPC to the
>newcomers.  But, it's for Leon to make the judgement call.  But don't
>open a poll about it.

As founder and moderator of this group, I'd rather keep it specific to the 
LPC2000. I've nothing against discussing the pros and cons of the other 
devices, of course.

Leon

Re: [lpc2000] LPC2xxx vs STR71x heresy?

2004-12-09 by Alaric Snell-Pym

Robert Adsett wrote:
> At 03:05 PM 12/9/04 +0000, you wrote:
> 
> 
>>>The STMicroelectronics STR71x looks very good - some features
>>>are superior to the LPC2xxx, such as 4 UARTS and 12-bit ADC.
>>>
>>>Is this group strictly Philips LPC2xxx? Should I go elsewhere
>>>if I decide to use the STR71x? Are there any considerations
>>>to expand the group's scope?
>>
>>As far as I can tell, there are three "small" ARMs of interest: SAM7,
>>LPC2000, and STR7xx.
> 
> 
> Four, there is the ADuC series from Analog Devices as well.
> 

The Wiki I set up was designed to feature all device families, so people 
can compare 'em:

http://www.open-research.org.uk/ARMuC/

It definitely needs more details on the non-LPC chips, however. If 
anyone sets up mailing lists for other device families, please please 
please email me so I can put the links up on the wiki, and tell folks on 
those lists about the wiki - I'm only an LPC man myself, so I won't be 
able to cover the other chip families...

> 
> Robert
> 

ABS

-- 
Alaric Snell-Pym
Work: http://www.snell-systems.co.uk/
Play: http://www.snell-pym.org.uk/alaric/
Blog: http://www.snell-pym.org.uk/categories/alaric/

RE: [lpc2000] LPC2xxx vs STR71x heresy?

2004-12-17 by Anton Erasmus

On 9 Dec 2004 at 10:18, Robert Adsett wrote:

> 
> At 03:05 PM 12/9/04 +0000, you wrote:
> 
> >
> > > The STMicroelectronics STR71x looks very good - some features are
> > > superior to the LPC2xxx, such as 4 UARTS and 12-bit ADC.
> > >
> > > Is this group strictly Philips LPC2xxx? Should I go elsewhere if I
> > > decide to use the STR71x? Are there any considerations to expand
> > > the group's scope?
> >
> >As far as I can tell, there are three "small" ARMs of interest: SAM7,
> >LPC2000, and STR7xx.
> 
> Four, there is the ADuC series from Analog Devices as well.

Five, once the Freescale (Formerly Motorola) MAC7000 device becomes available
for other non automotive customers. These  device look very good as well. The 
Freescale peripherals tend to be sorted out. One can generally assume that one can 
use one feature AND another feature. On the LPC2xxx devices it often seems a case
of one feature OR another feature.  

 
[Stuff Snipped]

Regards
   Anton Erasmus
-- 
A J Erasmus

Non-LPC -> start another group (was Re: LPC2xxx vs STR71x heresy?)

2004-12-17 by lpc2100_fan

Hi,

I think Leon made it pretty clear that there are 
1. ARM groups not dedicated to an implementations
2. Options to start a dedicate group for a different device

The LPCgroup is 99% talking about available devices, the LPCs, we know
that many players intend to provide devices that compete with the LPCs
Motorola stating clearly on their website that these devices are only
available to tier one automotive customers (who are probably not very
active in this group), why bother and talk about it.

According to the moderator of this group, Leon it should be focused on
the LPC devices.

p.s. no offense , Bob

--- In lpc2000@yahoogroups.com, "Anton Erasmus" <antone@s...> wrote:
> On 9 Dec 2004 at 10:18, Robert Adsett wrote:
> 
> > 
> > At 03:05 PM 12/9/04 +0000, you wrote:
> > 
> > >
> > > > The STMicroelectronics STR71x looks very good - some features are
> > > > superior to the LPC2xxx, such as 4 UARTS and 12-bit ADC.
> > > >
> > > > Is this group strictly Philips LPC2xxx? Should I go elsewhere if I
> > > > decide to use the STR71x? Are there any considerations to expand
> > > > the group's scope?
> > >
> > >As far as I can tell, there are three "small" ARMs of interest: SAM7,
> > >LPC2000, and STR7xx.
> > 
> > Four, there is the ADuC series from Analog Devices as well.
> 
> Five, once the Freescale (Formerly Motorola) MAC7000 device becomes
available
> for other non automotive customers. These  device look very good as
well. The 
> Freescale peripherals tend to be sorted out. One can generally
assume that one can 
> use one feature AND another feature. On the LPC2xxx devices it often
seems a case
Show quoted textHide quoted text
> of one feature OR another feature.  
> 
>  
> [Stuff Snipped]
> 
> Regards
>    Anton Erasmus
> -- 
> A J Erasmus

RE: [lpc2000] Non-LPC -> start another group (was Re: LPC2xxx vs STR71x heresy?)

2004-12-17 by Paul Curtis

Hi, 

> I think Leon made it pretty clear that there are 1. ARM 
> groups not dedicated to an implementations 2. Options to 
> start a dedicate group for a different device
> 
> The LPCgroup is 99% talking about available devices, the 
> LPCs, we know that many players intend to provide devices 
> that compete with the LPCs Motorola stating clearly on their 
> website that these devices are only available to tier one 
> automotive customers (who are probably not very active in 
> this group), why bother and talk about it.
> 
> According to the moderator of this group, Leon it should be 
> focused on the LPC devices.
> 
> p.s. no offense , Bob

I, for one, am interested in new devices that come along and am grateful
for the Rob's exposition of the new Freescale part.  TI also have the
TMS470 becoming available through distribution, but we've yet to see one
of these parts.

--
Paul Curtis, Rowley Associates Ltd http://www.rowley.co.uk
CrossWorks for MSP430, ARM, and now AVR processors

RE: [lpc2000] LPC2xxx vs STR71x heresy?

2004-12-18 by Robert Adsett

At 10:14 PM 12/17/04 +0200, you wrote:

>On 9 Dec 2004 at 10:18, Robert Adsett wrote:
>
> >
> > At 03:05 PM 12/9/04 +0000, you wrote:
> >
> > >
> > > > The STMicroelectronics STR71x looks very good - some features are
> > > > superior to the LPC2xxx, such as 4 UARTS and 12-bit ADC.
> > > >
> > > > Is this group strictly Philips LPC2xxx? Should I go elsewhere if I
> > > > decide to use the STR71x? Are there any considerations to expand
> > > > the group's scope?
> > >
> > >As far as I can tell, there are three "small" ARMs of interest: SAM7,
> > >LPC2000, and STR7xx.
> >
> > Four, there is the ADuC series from Analog Devices as well.
>
>Five, once the Freescale (Formerly Motorola) MAC7000 device becomes available
>for other non automotive customers. These  device look very good as well. The
>Freescale peripherals tend to be sorted out. One can generally assume that 
>one can
>use one feature AND another feature. On the LPC2xxx devices it often seems 
>a case
>of one feature OR another feature.

This time when I went looking they actually appeared.  However the smallest 
I saw was in a 112 pin package.  Not exactly in the same league.  Did I 
miss some?

Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,
be they legal, genetic, or physical.  If you don't believe me, try to
chew a radio signal. "

                         Kelvin Throop, III

Non-LPC (was Re: LPC2xxx vs STR71x heresy?)

2004-12-18 by dalenkarl

--- In lpc2000@yahoogroups.com, "Paul Curtis" <plc@r...> wrote:
> Hi, 
> 
> > I think Leon made it pretty clear that there are 1. ARM 
> > groups not dedicated to an implementations 2. Options to 
> > start a dedicate group for a different device
> > 
> > The LPCgroup is 99% talking about available devices, the 
> > LPCs, we know that many players intend to provide devices 
> > that compete with the LPCs Motorola stating clearly on their 
> > website that these devices are only available to tier one 
> > automotive customers (who are probably not very active in 
> > this group), why bother and talk about it.
> > 
> > According to the moderator of this group, Leon it should be 
> > focused on the LPC devices.
> > 
> > p.s. no offense , Bob
> 
> I, for one, am interested in new devices that come along and am 
grateful
> for the Rob's exposition of the new Freescale part.  TI also have 
the
> TMS470 becoming available through distribution, but we've yet to 
see one
> of these parts.

Me to, what about the new ATMEL low pin count devices,
said to be alot cheaper then LPC and have more things in them!
http://www.atmel.com/dyn/products/product_card.asp?part_id=3522
Any users group, anyone got a test drive of these?

Reg
KD

RE: [lpc2000] LPC2xxx vs STR71x heresy?

2004-12-18 by Anton Erasmus

On 17 Dec 2004 at 22:34, Robert Adsett wrote:

> 
> At 10:14 PM 12/17/04 +0200, you wrote:
> 
> >On 9 Dec 2004 at 10:18, Robert Adsett wrote:
> >
> > >
> > > At 03:05 PM 12/9/04 +0000, you wrote:
> > >
> > > >
> > > > > The STMicroelectronics STR71x looks very good - some features
> > > > > are superior to the LPC2xxx, such as 4 UARTS and 12-bit ADC.
> > > > >
> > > > > Is this group strictly Philips LPC2xxx? Should I go elsewhere
> > > > > if I decide to use the STR71x? Are there any considerations to
> > > > > expand the group's scope?
> > > >
> > > >As far as I can tell, there are three "small" ARMs of interest:
> > > >SAM7, LPC2000, and STR7xx.
> > >
> > > Four, there is the ADuC series from Analog Devices as well.
> >
> >Five, once the Freescale (Formerly Motorola) MAC7000 device becomes
> >available for other non automotive customers. These  device look very
> >good as well. The Freescale peripherals tend to be sorted out. One
> >can generally assume that one can use one feature AND another
> >feature. On the LPC2xxx devices it often seems a case of one feature
> >OR another feature.
> 
> This time when I went looking they actually appeared.  However the
> smallest I saw was in a 112 pin package.  Not exactly in the same
> league.  Did I miss some?
> 

IMO devices based on an ARM core with built-in flash and RAM are all in the same 
category. The size of the package as such - within reason does not exclude a device
from this group. Even a 112 pin TQSOP is still quite small for essentially a complete
32-bit computer.

Regarding te matter whether these other ARMs should be discussed here. IMO 
announcing alternatives here is good. Discussing differences in implimentations is 
good. Especially pointing out gotchas that might be present in either the LPC2xxx 
device or the alternative (i.e. not present in the LPC2xxx). Discussing non LPC2xxx
devices outside this context should be done in an alternative list/group.


Regards
   Anton Erasmus

-- 
A J Erasmus

RE: [lpc2000] Non-LPC (was Re: LPC2xxx vs STR71x heresy?)

2004-12-18 by Paul Curtis

Hi,

> > I, for one, am interested in new devices that come along and am
> grateful
> > for the Rob's exposition of the new Freescale part.  TI also have
> the
> > TMS470 becoming available through distribution, but we've yet to
> see one
> > of these parts.
> 
> Me to, what about the new ATMEL low pin count devices, said 
> to be alot cheaper then LPC and have more things in them!
> http://www.atmel.com/dyn/products/product_card.asp?part_id=3522
> Any users group, anyone got a test drive of these?

Well, the SAM7 things exist as we have a board with a production device
on.

--
Paul Curtis, Rowley Associates Ltd  http://www.rowley.co.uk
CrossWorks for MSP430, ARM, and now AVR processors

RE: [lpc2000] Non-LPC (was Re: LPC2xxx vs STR71x heresy?)

2004-12-18 by Gazelle

Hi – I have also seen one SAM7 eval-board in hands of our local
distributor EBV – mid October.

            However – it is good to remain cautious about “non-reported
bugs”, I encountered

            this experience with “another” ARM core  (not Philips nor Atmel)
and as photomask cost are

expensive in 0.18µm (or below) – it can take some time before they will do a
2nd run – most likely

during their first run samples were available only in very limited quantity
and only for big target OEMs.

However I am sure that LPC2100 family is a modern, generic and speedy
version of

 the ARM7TDMI-S core with their PLL and VPB improvements – I like this chip
very much :-)

I hope that Philips will come soon out with ARM920T version with Flash, USB2
(OTG) and – w/o 10BT MAC.

 

Cheers,

 

Michel
Show quoted textHide quoted text
-----Original Message-----
From: Paul Curtis [mailto:plc@rowley.co.uk] 
Sent: zaterdag 18 december 2004 12:37
To: lpc2000@yahoogroups.com
Subject: RE: [lpc2000] Non-LPC (was Re: LPC2xxx vs STR71x heresy?)

 

Hi,

> > I, for one, am interested in new devices that come along and am
> grateful
> > for the Rob's exposition of the new Freescale part.  TI also have
> the
> > TMS470 becoming available through distribution, but we've yet to
> see one
> > of these parts.
> 
> Me to, what about the new ATMEL low pin count devices, said 
> to be alot cheaper then LPC and have more things in them!
> http://www.atmel.com/dyn/products/product_card.asp?part_id=3522
> Any users group, anyone got a test drive of these?

Well, the SAM7 things exist as we have a board with a production device
on.

--
Paul Curtis, Rowley Associates Ltd  http://www.rowley.co.uk
CrossWorks for MSP430, ARM, and now AVR processors  





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Re: [lpc2000] Non-LPC -> start another group (was Re: LPC2xxx vs STR71x heresy?)

2004-12-20 by otc_friend

>The LPCgroup is 99% talking about available devices, the LPCs, we know
>that many players intend to provide devices that compete with the LPCs
>Motorola stating clearly on their website that these devices are only
>available to tier one automotive customers (who are probably not very
>active in this group), why bother and talk about it.
BTW: TI even makes ARM7 devices entirely only for high-volume automobile
customers.

Happy christmas -
- Henry

<Schau auch mal auf meine Homepage www.ehydra.dyndns.info>
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Futteralge Chlorella, brasilianischer Sauerklee, Natron zum Backen/Baden,
Chemikalien u.a.>
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