Lpc2000

Rick Collins wrote:

>
> --- In lpc2000@yahoogroups.com, Onestone <onestone@b...> wrote:
> > Anyone have any ideas when tools and samples of the ADuC70xx will be
> > available? I'm not overly happy with the need to go to higher end parts
> > with the LPC to get analog I/O, and would like to run the two head to
> > head first.
>
> I am getting samples right now.  I asked for 5 of the wide temperature
> range version ADuC7024BST62 which they are sending along with 3 of the
> standard temp versions that I didn't ask for.  They are even sending
> them by FedEx. 
>
> I don't understand your other comment.  What is higher end about the
> Philips parts vs. the ADI parts?


The comment was wrt philips parts. From the first seminar it struck me 
that even the smallest parts were overburdened with memory and comms 
peripherals, and severely lacking the sort of peripheral that I most 
use, ie precision timing and analog. To get analog peripherals you need 
to move up to the higher end of the philips range, with 32k RAM and 256k
Flash, plus a second helping of comm ports of every perusasion. price is 
largely irrelevant, but size isn't, nor is current consumption, so the 
40 pin ADuC7020 in a 6mmsq package with a 12 bit A/D and 12 bit DACs is 
a far better proposition than the LPc2138 with only 10 bit analog. Even 
the LPC2106 with 64k RAM and 128k flash is just way too much. I think I 
commented in the LPc2000 group that I felt they (Philips) had a very 
poorly planned family of parts. They are trying to move down to the 
middle and low ground, but still have the high end market fixation. I 
only want the extra processing grunt, I don't really need 32 bits, or 
bucket loads of memory, just a faster MSP430. ;@}

>   In fact, I think the Philips parts
> are a bit cheaper.  Typically ADI tries to focus on precision and
> charges a bit more.  In this case their ADC can do 1 MSPS at 12 bits
> or other vesions do a full 16 bit ADC.  I have been told that the
> lowest cost chip starts at $5 qty 1000.

Thats better than I get MSP430's for, so I'd be happy with that. I only 
need the very lowest end parts right now, and performance is more of an 
issue than price. Not necessarily raw processor speed, but peripherals, 
I/O etc.


>   I know Philips can get under
> that.  Am I mistaken in thinking all the Philips parts have ADC?  

I know that I had to go to the LPC213x to get ADC/DAC, and then only 
slow with juist 10 bits.

I raised my views on the family planning at the Philips seminar. 
Needless to say they were singularly unimpressed, but I'm sure I'm not 
alone in my opinions in this respect. Great part, badly executed wrt 
memory/peripheral options.

> It
> has been awhile since I have looked at their data sheets. 
>
> BTW, if this is useful to people here that's fine.  But this thread
> might be discussed better at the ADuC_ARM group.
>
> http://groups.yahoo.com/group/ADuC_ARM/


Whoops, sorry, thought I weas replying to that group, should read more 
closely.

Bye for now.

Al

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