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Re: [lpc2000] ARM chips to replace an MC68HC908AB32?

2004-10-04 by David Willmore

> Robert said:
> How about the ADUC7021 or ADUC7024 from Analog devices?  Biggest issue 
> would be I/O pins, they do have variant that go up to 40 I/O pins.  Maybe 
> add SPI expansion on the I/O?
> 
> They are not an exact match but are probably worth a gander (12bit A/D with 
> some family members having up to 16 channels)
> 
> I'm playing around a bit with one of the family members now.

I can't believe I'm saying it in a uC context, but those ARM chips looks
too small. :)  All of the I/O can be replaced by external chips over SPI
or I2C *except* the GPIO.  You never know when someone will design a
motherboard that will need *this* pin bit banged as fast as possible.
If that's not a real GPIO on the uC, everything goes south.

So, I do like those chips, but they don't fit this use well.  Wow, those
are some small ARMs.

Any idea what they're going to sell for?  It looks like they're a little
premature right now.

Cheers,
David

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