Lpc2000

Em Seg 26 Set 2005 23:48, Rick escreveu:
>  I was pleased to see the announcement of the 2101/2/3. What it means to
> me is that there is little reason to use an 8-bitter in a new design any
> more. I've been watching the ARM uC field develop for the last few years
> I've recently decided that the LPC2xxx will do nicely as my next
> bread-n-butter processor. However, on the low end the need for an
> external 1.8V regulator, external reset, and clock add another buck to
> the BOM. If you look at the low end 8-pin AVRs and PICs 8-bitters they
> have all three built in. IMHO, that's half of their charm.
>

You are right, but they have different uses. 
For example, I developed a complete car alarm system using a PIC 12F629, wich 
is a 8 pin microcontroller with 6 I/Os, 1k of ROM, 256 bytes of RAM and a 
very good price. My alarm is very very cheap and the sales is going well.
Of course, in such a product, I dont need highspeed, memory, etc.
But when you need highspeed, you cant count with a internal oscilator. For 
example, with internal oscillator it becomes a big problem to use a USART at 
115200 kps. You cant make a internal clock, so it is better to have a 
external cristal.
The power supply, I think is so low because of the high speed of the 
processor. 
And the reset, well, I think is a good idea to have a pin exclusive for this.
When you think in a 6 IOs MCU, using a cristal and external reset, makes you 
lost 50% os the pins (you will have only 3 IOs). But when you have more than 
32 IOs, losing 3 pins is not a big problem.

> philips_apps wrote:
> >Hi Michel,
> >
> >why am I not surprised that questions about planned devices are some
> >of the first comments when announcing new ones ;-)
> >
> >Some answers some question will remain unanswered.
> >- More internal Flash, well, have a look at the LPC214x which is
> >rather similar in features but goes up to 512 KB Flash.
> >- Philips and Cortex?  Let's discuss that one sometime in 2006
> >- Older LPC members will get fixed, expect fixed devices in Q1/06
> >for LPC211x, LPC212x, LPC22xx, and Q2 for the LPC2104/5/6
> >- Intro LPC3000 as high performance number cruncher with Floating
> >Point later this year.
> >
> >Hope this helps,