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Discussion Groups | LPC900 | Re: Digest Number 49
Find help, specifications and source code for the LPC900. The LPC900 challenges Microchip and AVR based on the worlds most popular 8-bit architecture the 80C51. With a 2-clock core the LPC900 series is a high performance, very flexible and low cost 8-bit microcontroller family. Designers using or interested in these devices are encouraged to share their know-how and ask questions.
Re: Digest Number 49 - Pragnesh Sheth - Feb 18 0:27:00 2005
If you use brownout to generate reset this problem can be sorted out
Pragnesh.
----- Original Message -----
From: <lpc900_users@lpc9...>
To: <lpc900_users@lpc9...>
Sent: Friday, February 18, 2005 7:17 AM
Subject: [lpc900_users] Digest Number 49 >
> There is 1 message in this issue.
>
> Topics in this digest:
>
> 1. Re: Re: LPC932-Hangs During Startup
> From: Dot m <dot2cell@dot2... > ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 1
> Date: Thu, 17 Feb 2005 05:29:14 -0800 (PST)
> From: Dot m <dot2cell@dot2...>
> Subject: Re: Re: LPC932-Hangs During Startup
>
> Hi Bob,
> Thanks for the support. I'll try to get LPC932A and
> try again. Unfortunately I got 30 nos of TSSOP stuff
> with me. Here in Chennai (India), I could not get PLCC
> version.
> Once again Thanks for the mail.
> Dot Bala
>
> --- lpc2100_fan <lpc2100_fan@lpc2...> wrote:
>
> >
> > Hi Dot,
> >
> > please get a LPC932-A1, which has been the current
> > version for about
> > 6-9 months now. If it still happens , post again.
> >
> > Background: the original LPC932 had a problem if the
> > voltage goes
> > below let's saw 1V but stays above 0.2V before it
> > comes back on.
> > Usually you have some caps on your board and if you
> > turn of the power,
> > it will remain for quite a while above 0.2V. In this
> > case the LPC932
> > does not see a Power On reset and can behave rather
> > strangly. Worst
> > case it can overwrite a part of the internal flash.
> > We did not have any of these problems since we
> > switched to the
> > LPC932-A1, so please try that.
> >
> > hth, Bob
> >
> > --- In lpc900_users@lpc9..., "dot2cell"
> > <dot2cell@y...> wrote:
> > >
> > > Hi
> > > I had a problem during startup.
> > > LPC932 Hangs during startup whenever there is a
> > Mains power failure or
> > > while switch on the device. This happens 2 out of
> > 10 occations.
> > > I am new to this embedded field.
> > > I hope I will get support from the group.
> > > Thanks for reading my mail.
> > > With Best regards.
> > > Dot Bala
> >
> >
> >
> >
>
> __________________________________ > ________________________________________________________________________
> ________________________________________________________________________ >
> ------------------------------------------------------------------------
> Yahoo! Groups Links >
>
> ------------------------------------------------------------------------
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )
Pragnesh.
----- Original Message -----
From: <lpc900_users@lpc9...>
To: <lpc900_users@lpc9...>
Sent: Friday, February 18, 2005 7:17 AM
Subject: [lpc900_users] Digest Number 49 >
> There is 1 message in this issue.
>
> Topics in this digest:
>
> 1. Re: Re: LPC932-Hangs During Startup
> From: Dot m <dot2cell@dot2... > ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 1
> Date: Thu, 17 Feb 2005 05:29:14 -0800 (PST)
> From: Dot m <dot2cell@dot2...>
> Subject: Re: Re: LPC932-Hangs During Startup
>
> Hi Bob,
> Thanks for the support. I'll try to get LPC932A and
> try again. Unfortunately I got 30 nos of TSSOP stuff
> with me. Here in Chennai (India), I could not get PLCC
> version.
> Once again Thanks for the mail.
> Dot Bala
>
> --- lpc2100_fan <lpc2100_fan@lpc2...> wrote:
>
> >
> > Hi Dot,
> >
> > please get a LPC932-A1, which has been the current
> > version for about
> > 6-9 months now. If it still happens , post again.
> >
> > Background: the original LPC932 had a problem if the
> > voltage goes
> > below let's saw 1V but stays above 0.2V before it
> > comes back on.
> > Usually you have some caps on your board and if you
> > turn of the power,
> > it will remain for quite a while above 0.2V. In this
> > case the LPC932
> > does not see a Power On reset and can behave rather
> > strangly. Worst
> > case it can overwrite a part of the internal flash.
> > We did not have any of these problems since we
> > switched to the
> > LPC932-A1, so please try that.
> >
> > hth, Bob
> >
> > --- In lpc900_users@lpc9..., "dot2cell"
> > <dot2cell@y...> wrote:
> > >
> > > Hi
> > > I had a problem during startup.
> > > LPC932 Hangs during startup whenever there is a
> > Mains power failure or
> > > while switch on the device. This happens 2 out of
> > 10 occations.
> > > I am new to this embedded field.
> > > I hope I will get support from the group.
> > > Thanks for reading my mail.
> > > With Best regards.
> > > Dot Bala
> >
> >
> >
> >
>
> __________________________________ > ________________________________________________________________________
> ________________________________________________________________________ >
> ------------------------------------------------------------------------
> Yahoo! Groups Links >
>
> ------------------------------------------------------------------------
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )