> Why not use an external AD connected via SPI interface on LPC2106?! Surely
> there is a 8-pin device available on the market.
>
> - Henry
>
>
> <Schau auch mal auf meine Homepage www.ehydra.dyndns.info>
> <u.a. Versand von Wasserflohzuchtansatz, Wasserpflanzen/-schnecken,
> Futteralge Chlorella, brasilianischer Sauerklee, Natron zum Backen/Baden,
> Chemikalien u.a.>
> <Alternativ \ufffdber http://people.freenet.de/algenkocher>
>
>
> -----Urspr\ufffdngliche Nachricht-----
> Von: lpc2100_fan <lpc2100_fan@...>
> An: lpc2000@yahoogroups.com <lpc2000@yahoogroups.com>
> Datum: Donnerstag, 16. Dezember 2004 18:21
> Betreff: [lpc2000] Re: Compatibility
>
>
> >
> >
> >Hi Al,
> >
> >from what you are describing you might want to have a look at Silicon
> >Labs. They have fast 8-bit micros with high resolution ADCs. The
> >problem might be that you pay as much for an 8-bit micro as you pay
> >for the low end ARM micros.
> >I don't know why you mentioned that you have to go to the high end ARM
> >offerings with Philils to find an ADC. The LPC2131, the entry level
> >for ARM from Philips has a 10-bit 8 channel ADC. You are right that it
> >also has many communication ports.
> >Let me give you some background information (I am involved in chip
> >design) about the reason why there are so many serial channels while
> >the ADC is, let's say OK but not great.
> >1. In advanced technologies, serial channels are very small and
> >getting smaller every day. This is very different with ADCs, they do
> >not get smaller, actually for many processes they even have to be
> >bigger using most advanced processes. So, one good 10-bit ADC might be
> >as big as 2 UARTs + 2 I2Cs + 2 SPIs!?
> >2. Different user, different serial interface. You like a UART (so do
> >I) but many engineers use SPI or some I2C. Missing one of them might
> >disqualify the micro for a large range of applications.
> >3. The most appealing part of the new generation of ARM micros is the
> >price performance ratio. You are in need for speed, so are many
> >others. A package of 8x8mm providing you 32k Flash, 8k RAM, 8 channels
> >10-bit ADC running 60 MHz (almost) 0 Wait states from Flash.
> >
> >Summary:
> >Your needs are probably best met by the AD devices (although they are
> >much slower from Flash and have a miserable Interrupt controller. The
> >AD device is a great ADC with a not so great microcontroller attached
> >to it ;-)
> >
> >Hope you find the best device for you.
> >
> >Cheers Bob
> >
> >--- In lpc2000@yahoogroups.com, onestone <onestone@b...> wrote:
> >> Hi Bill, thanks. The problem is that, according to the AD website their
> >> ARM7 offering isn't available yet, It looks the part, still has more
> >> memory than I want, and more peripherals, but a far better mix for my
> >> needs (actually all I want is an eight pin part with 2 * A/D, 2 * DACs,
> >> stable clock, internal timers, at 50mA the current is a bit high, and I
> >> assume that is core only, not all peripheals running, but I can live
> >> with that, it still figure I'll get a week between recharges. I'll keep
> >> my eyes open for parts becoming available, in the meantime it will be
> >> worth while using the LPC to try and ARMour myself.
> >>
> >> Cheers
> >>
> >> Al
> >>
> >> Bill Knight wrote:
> >>
> >> > Al
> >> > You might want to take a look at the Analog Devices ADuC700 series
> >> > ARM offerings. They may be more in line with what you are seeking.
> >> >
> >> >
> >http://www.analog.com/en/content/0%2C2886%2C117%255F%255F31068%2C00.html
> >> >
> >> > Regards
> >> > -Bill Knight
> >> >
> >> > PS - welcome to the ARM side of things
> >> >
> >> >
> >> > On Thu, 16 Dec 2004 11:00:48 +1030, onestone wrote:
> >> >
> >> >
> >> > Hi Kris, I'm not even sure the ARM is what I want. It seems
> >underdone -
> >> > overkill if you see what I mean. Not as bad as some other ARM devices,
> >> > but still too much of some things and not enough of others.
> >> >
> >> > The smallest part has 8k RAM, and 32k flash IIRC. Even the tiniest
> >parts
> >> > have more comms interfaces than NASA, But you have to get to
> >really big
> >> > parts to get an ADC, and even then it's only 10 bits. To me it's
> >XA'ish.
> >> > A good idea done badly. Philips rationale for low res ADC is that on
> >> > chip noise makes anything more useless. Its odd that most other
> >vendors
> >> > don't have problems here, By the time I get an ADC I've got 2 UARTs, 2
> >> > SPI's IIC, a CAN of worms, and who knows what other comms interfaces
> >> > eating up the silicon. I don't want comms. I want to process sensor
> >> > data. maybe 1 UART would be fine. An SPUI or IIC as well. Sure it's 32
> >> > bit, that doesn't mean it has to be a mammoth. The only reason I'm
> >> > looking at the ARM is it's flash base and higher execution speeds.
> >> > Couple that with 32 bit processing (which I could live without)
> >for fast
> >> > calcs. It also is quite low current for what it can do. So I don't see
> >> > it as anything more than an 8 bitter that has faster bigger number
> >> > crunching. Every one of the top micro suppliers, in terms of volume,
> >> > makes a large part of their market through small devices, low pin
> >count.
> >> > basically that's what I want. a 20 pin device that is damned fast, and
> >> > which eats numbers, without sucking the sort of juice that a DSP does.
> >> > So I'd be happy with 8K of flash, 2k of RAM, 4 A/D channels at 12 bits
> >> > or better, 8 capture compares, 1 UART, 1 SPI/IIC. 60MHz, slower I/O is
> >> > fine. I just want the built in multiplier. Philips don't even come
> >close
> >> > on their road map.
> >> >
> >> > So, although I'm having a look I don't see much of a future in it for
> >> > me. There are better, lower cost options on the horizon, that approach
> >> > the same processing speeds, at lower currents, with a more
> >rational (for
> >> > me) peripheral/memory mix.
> >> >
> >> > Al
> >> >
> >> > microbit wrote:
> >> >
> >> > > Hey Al,
> >> > >
> >> > > Nice to meet here :-)
> >> > > The J-link outputs onto the standard 20 pin JTAG, and should just
> >> > > drop into the 20 pin JTAG on MCB2100.
> >> > >
> >> > > -- Kris
> >> > >
> >> > > > Can anyone tell me if the J-Link unit that comes with the
> >IAR tools is
> >> > > > compatible with the MCB2100 board from Keil, please.
> >> > > >
> >> > > > Cheers
> >> > > >
> >> > > > Al
> >> >
> >> >
> >> >
> >> >
> >> > Yahoo! Groups Sponsor
> >> > ADVERTISEMENT
> >> >
> ><http://us.ard.yahoo.com/SIG=1290pot13/M=295196.4901138.6071305.3001176/D=g
> roups/S=1706554205:HM/EXP=1103245757/A=2128215/R=0/SIG=10se96mf6/*http://com
> panion.yahoo.com>
> >> >
> >> >
> >> >
> >------------------------------------------------------------------------
> >> > Yahoo! Groups Links
> >> >
> >> > * To visit your group on the web, go to:
> >> > http://groups.yahoo.com/group/lpc2000/
> >> >
> >> > * To unsubscribe from this group, send an email to:
> >> > lpc2000-unsubscribe@yahoogroups.com
> >> > <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe>
> >> >
> >> > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> >> > Service <http://docs.yahoo.com/info/terms/>.
> >> >
> >> >
> >
> >
> >
> >
> >
> >
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
>
> Yahoo! Groups Sponsor
> ADVERTISEMENT
> <http://us.ard.yahoo.com/SIG=129r4n7fp/M=295196.4901138.6071305.3001176/D=groups/S=1706554205:HM/EXP=1103635257/A=2128215/R=0/SIG=10se96mf6/*http://companion.yahoo.com>
>
>
> ------------------------------------------------------------------------
> Yahoo! Groups Links
>
> * To visit your group on the web, go to:
> http://groups.yahoo.com/group/lpc2000/
>
> * To unsubscribe from this group, send an email to:
> lpc2000-unsubscribe@yahoogroups.com
> <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe>
>
> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service <http://docs.yahoo.com/info/terms/>.
>
>