Phil Keller wrote:
> What are groups thoughts on this series?

I love those little guys!

> I know that it has a limited number of I/O's and small program space
> but do you have some guidelines for its use?

It depends on what you want to do with them of course.  One thing to
consider is that ICSP must not be an afterthought since 5 of the 6 pins will
participate.  I find this to be this toughest challenge for designing with
the 10Fs, especially since the original 4 10Fs always have the internal
pullup on MCLR enabled when the MCLR pin is configured for that role.
Fortunately the new ones don't have that problem, but they are more
expensive and therefore less interesting.

I discuss ICSP issues in more detail at
http://www.embedinc.com/picprg/icsp.htm.

> Where would you recommend it?

Anyplace 4 I/O pins, 512 instructions, 24 bytes of RAM, and 4MHz are
sufficient.  They are particularly good for high volume applications.  The
price gets pretty low when you want to buy a few 100K to a few 1M of them.

> What type of apps?

I've used them a lot for simple switching power supply controllers.  In fact
I may be teaching a class at Masters on that subject this year.  I've also
used them in other applications.

My most complicated 10F application is a active RFID tag that runs from a
coin cell and every 10 seconds sends out a manchester encoded message
followed by an IR signature.  The IR modulation and the carrier itself are
all produced by the 10F202.  The IR LED goes on when a pin is high, and off
when low.  Everything else is firmware.  There is also a button on the tag
that is debounced.  A short press increases the button counter in the RF
packet and causes an immediate transmission.  A long open causes other
things to happen.

Another application was an intelligent reset controller and watchdog timer
all in one.

> Where would you be afraid of it?  Looks good but just doesn't cut it.

I don't understand the question.  Either it has enough resources to do the
job or it doesn't.  I don't see how fear is relevant.


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