Sorry - maybe I missed the orginal post. Thought 555 referred to
Signetics' NE555 - a linear circuit, a timer only. When I left there in
the early 80's my designs only used OT programming (Zener zapping) at
the wafer level. Have they changed that to eeprom bits for in-circuit
trim or function changes?
-Wayne

> ----------
> From:         Mike Keitz[SMTP:mkeitz@JUNO.COM]
> Sent:         Wednesday, October 22, 1997 10:23 PM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      Re: PIC Development Tools
>
> On Wed, 22 Oct 1997 13:12:31 -0400 Wayne Foletta
> <wayne@ELECTROTEK.COM>
> writes:
> >I know the 555 and others that I helped design at Signetics.
> >The 84 is no 555! The 84 is a lot of power for less than $4 now and
> >going down.
>
> Interesting, since I just wired up a 555 to generate test pulses for a
> pulse amplifer which will eventually be driven by an '84.  The PIC
> will
> be doing much more than just generating pulses though.
>
> I'm using a proto-board to fully exploit the 555's total in-circuit
> reprogrammability.  It costs much less than $4, and has a supply
> voltage
> range and output current capability that no microcontroller can touch.
> No ICE is available though.
>