on 28/12/01 1:18 AM, Byron A Jeff at byron@CC.GATECH.EDU wrote:

Hi Baj,

> Nope. They don't.

Thanks for that.

> Didn't you check the data sheet?

Yes. I did. From cover to cover. Couldn't find any mention. Assumed they did
not have them, but just wanted to check with some more experienced folks.

> There are a couple of other issues involved. Each of the parts that you names
> use only the parallel programming algorithm. Programming may be an issue.

Our production programmer can do them.

> If the packaging isn't a dealbreaker, then you may want to take a look at the
> 16C505. Under $2 US in quantity, it's packaged in a 14 pin package. The PORTB
> implements weak pullups on 4 of the 6 abailable pins. It also comes with
> builtin osillator and reset circuitry so that up to 12 I/O pins are available.

This is the best suggestion I have had for this project - thanks! The 16C505
sounds ideal! I will have to use an external oscillator though. Want to run
at 32.768 kHz in LP mode to minimise current. But that should still leave me
with 10 I/O - perfect!

Just depends on cost in quantity. I can buy a PIC16C54C-04E/P for only 68c -
which is fine if I only have to add 4 resistors for pullups.

> Other than that, the 16F62X series is probably your best bet.

OK, Thanks.

Regards,

Sean

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