I'd say that most of the time at least one JW is really useful to have around- there are things like power consumption and noise that you can't effectively test on an ICE. Microchip's JWs are a bit pricy but I wouldn't be without one - if you take care of them they last almost forever, and you don't have the problem of running out of OTPs just as you're on a tight deadline, trying to find out where that few hundred microamps of SLEEP mode power is leaking to....=20 =20 On Wed, 20 Nov 2002 11:49:10 -0500, you wrote: >At 07:20 AM 11/20/02 -0500, you wrote: >> > 12c508 is "one shot one kill" and i burned out 2 micros >> >>That's why the make the JW package version. There are UV eraseable. > >I could argue convincingly that if you have a good ICE, the >UV erasables are not required, it's easier to throw a few $1 plastic >12C508s away than to worry about whether the chip is still okay. > >Did development for years for Moto MC68HC705xx with no erasables, >and wasted maybe a rail or two total (10 or 15 chips). >Utterly negligible cost, and I never had to worry about whether the >part was still okay or whether the pin count had been decremented since >the last test. > >Best regards, > >Spehro Pefhany --"it's the network..." "The Journey is the = reward" >speff@interlog.com Info for manufacturers: = http://www.trexon.com >Embedded software/hardware/analog Info for designers: = http://www.speff.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.