Doug

I have had two community repeater controllers (two-way radio) go down
because of EPROMS loosing data and when I contacted the company they didnt
have the exact version that was in my EPROM. They had made many changes over
the years(1974 vintage) and some changes were not documented or files
kept(so they say). They want $250 to have me send it back in now and rewrite
and update the unit. I think I am going to just redesign it myself using a
pic. I have since started to put EPROM data on CD when I find them.

Bill N8HKI

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Doug Butler
Sent: Sunday, April 06, 2003 12:19 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: [EE]:EPROMs on older test gear


Now that some digital test gear is passing its 25th birthday or more, has
anyone had problems with EPROM life?  EPROM datasheets from the mid 1970's
give a data retention life of 25 years.  I have a HP1631 logic analyser that
is currently running fine but is over 20 years old.  Should I worry about it
losing its program?  Would it be worth removing the EPROMS and making
archive copies of their contents?

Doug Butler
Sherpa Engineering

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads