25 Mar
2006
25 Mar
'06
12:50 p.m.
Fellow Techies,
I have a device (a GPS-referenced clock) that uses an Intel N80C188-16 microprocessor, in
a 68-lead PLCC package. Odd as it may sound, I suspect this chip of being defective, and
I've been attempting to locate a match for it so I can prove or disprove that theory.
The original part is, of course, no longer manufactured as far as I can tell. Hunting
around on the 'net turned up a couple of modern equivalents, one of which is an Intel
TN80C188EA20. As near as I can tell, the only difference with this chip is that it can be
clocked a bit faster (20MHz instead of 16), and that it has an extended operating
temperature range.
There are two other possible candidates available, though not in stock at the moment.
Both are made by Intel. One is the N80C188XL20, and the other is the other is the
TN80C188XL20.
I know just enough about these chips to be wary of differences in prefix and suffix
letters. With that in mind, I have two questions for the group.
(1) Of the above replacements I've mentioned, which one is most likely to be a direct
plug-in replacement for the suspect chip?
(2) Failing that -- Does anyone happen to have a known-good N80C188-16 that they could be
convinced to part with?
In this same instrument is a Motorola MC68HC11A0FNC11W in a PLCC-52 package. I need to
find a viable replacement for it as well. I've had a harder time tracking down
possible replacements for it. The only ones I've come across so far, that are
available without an enormous minimum purchase, are the MC68HC11E0CFN2, the
MC68HC11E1CFN2, and the MC68HC11E1CFN3.
Once again, I'm very leery of mixing/matching suffix codes due to lack of knowledge.
I do know this much: The Motorola part is operating with an external EPROM, so the chip
itself is ROMless.
Assistance with this mess would be much appreciated. Thanks in advance.
-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
kyrrin (at) bluefeathertech do/t c=o=m
"If Salvador Dali had owned a computer, would it have been equipped with surreal
ports?"
25 Mar
25 Mar
1:15 p.m.
On 3/25/06, Bruce Lane <kyrrin at bluefeathertech.com> wrote:
Fellow Techies,
I have a device (a GPS-referenced clock) that uses an Intel
N80C188-16 microprocessor, in a 68-lead PLCC package. Odd as it may sound, I
suspect this chip of being defective, and I've been attempting to locate a
match for it so I can prove or disprove that theory.
The original part is, of course, no longer manufactured as far as
I can tell. Hunting around on the 'net turned up a couple of modern
equivalents, one of which is an Intel TN80C188EA20. As near as I can tell,
the only difference with this chip is that it can be clocked a bit faster
(20MHz instead of 16), and that it has an extended operating temperature
range.
There are two other possible candidates available, though not in
stock at the moment. Both are made by Intel. One is the N80C188XL20, and the
other is the other is the TN80C188XL20.
I know just enough about these chips to be wary of differences in
prefix and suffix letters. With that in mind, I have two questions for the
group.
(1) Of the above replacements I've mentioned, which one is most
likely to be a direct plug-in replacement for the suspect chip?
I happen to use 80C188XL. There is a document on line,
http://x86.ddj.com/ftp/manuals/186/2370.pdf that talks about how to upgrade
from 80C188 to 80C188XL.
-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
kyrrin (at) bluefeathertech do/t c=o=m
"If Salvador Dali had owned a computer, would it have been equipped with
surreal ports?"
2:18 p.m.
On 3/25/2006 at 1:15 PM 9000 VAX wrote:
You can easily find a socketed 80c188 by digging around for someone with a
scrap USR Courier modem (the big black external ones). There have to be
thousands of those still out there.
Cheers,
Chuck
26 Mar
26 Mar
12:03 a.m.
On 3/26/06, Bruce Lane <kyrrin at bluefeathertech.com> wrote:
In this same instrument is a Motorola
MC68HC11A0FNC11W in a PLCC-52 package. I need to find a viable replacement for it as well.
I've had a harder time tracking down possible replacements for it. The only ones
I've come across so far, that are available without an enormous minimum purchase, are
the MC68HC11E0CFN2, the MC68HC11E1CFN2, and the MC68HC11E1CFN3.
I have a couple of spare MC68HC11A1CFN3 in a PLCC-52 package.
Would this work?
5 Apr
5 Apr
8:58 a.m.
Good day,
*********** REPLY SEPARATOR ***********
On 26-Mar-06 at 13:03 Wai-Sun Chia wrote:
On 3/26/06, Bruce Lane <kyrrin at
bluefeathertech.com> wrote:
I have a couple of spare MC68HC11A1CFN3 in a PLCC-52 package.
Would this work?
Regrettably not. The HC11 series are, as it turns out, far more picky about suffixes than
the 80C188. In this case, the A0 sports 256 bytes of on-chip RAM, whereas the A1 sports
512. Although pin-compatible, the microcode in the unit I have is written to support an
A0.
I have since located a couple of HC11A0 series from Newark, so that issue is solved for
now. I've also located some 80C188XL's, so all is well for the moment.
Thanks much.
-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
kyrrin (at) bluefeathertech do/t c=o=m
"If Salvador Dali had owned a computer, would it have been equipped with surreal
ports?"
In this same instrument is a Motorola
MC68HC11A0FNC11W in a
PLCC-52 package. I need to find a viable replacement for it as
well. I've
had a harder time tracking down possible replacements for it. The only
ones I've come across so far, that are available without an enormous
minimum purchase, are the MC68HC11E0CFN2, the MC68HC11E1CFN2, and the
MC68HC11E1CFN3.
27 Mar
27 Mar
3:28 a.m.
(Would it be too much to ask that you not use one-long-line paragraphs?)
In this same instrument is a Motorola MC68HC11A0FNC11W
in a PLCC-52
package. I need to find a viable replacement for it as well. I've
had a harder time tracking down possible replacements for it. The
only ones I've come across so far, that are available without an
enormous minimum purchase, are the MC68HC11E0CFN2, the
MC68HC11E1CFN2, and the MC68HC11E1CFN3.
I believe I have a 68HC11 doc book somewhere; in case you don't find
what you need, tell me and I can try to dig it out and see if it
explains the suffixes in enough detail to tell whether any of those
should be workable replacements.
I do know this much: The Motorola part is operating
with an external
EPROM, so the chip itself is ROMless.
...or running with the ROM disabled; memory (from when I last read that
book) says that a 68HC11 with ROM can be configured to run as if it
were ROMless.
/~\ The ASCII der Mouse
\ / Ribbon Campaign
X Against HTML mouse at rodents.montreal.qc.ca
/ \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B
5 Apr
5 Apr
7:44 p.m.
New subject: OFFLIST ---------- Re: Replacing 80C188 and 68HC11
I can't swear to it, but I think Digi-Key has some
versions of the 188/186's still in stock. Good luck.
--- Bruce Lane <kyrrin at bluefeathertech.com> wrote:
Fellow Techies,
I have a device (a GPS-referenced clock) that uses
an Intel N80C188-16 microprocessor, in a 68-lead
PLCC package. Odd as it may sound, I suspect this
chip of being defective, and I've been attempting to
locate a match for it so I can prove or disprove
that theory.
The original part is, of course, no longer
manufactured as far as I can tell. Hunting around on
the 'net turned up a couple of modern equivalents,
one of which is an Intel TN80C188EA20. As near as I
can tell, the only difference with this chip is that
it can be clocked a bit faster (20MHz instead of
16), and that it has an extended operating
temperature range.
There are two other possible candidates available,
though not in stock at the moment. Both are made by
Intel. One is the N80C188XL20, and the other is the
other is the TN80C188XL20.
I know just enough about these chips to be wary of
differences in prefix and suffix letters. With that
in mind, I have two questions for the group.
(1) Of the above replacements I've mentioned, which
one is most likely to be a direct plug-in
replacement for the suspect chip?
(2) Failing that -- Does anyone happen to have a
known-good N80C188-16 that they could be convinced
to part with?
In this same instrument is a Motorola
MC68HC11A0FNC11W in a PLCC-52 package. I need to
find a viable replacement for it as well. I've had a
harder time tracking down possible replacements for
it. The only ones I've come across so far, that are
available without an enormous minimum purchase, are
the MC68HC11E0CFN2, the MC68HC11E1CFN2, and the
MC68HC11E1CFN3.
Once again, I'm very leery of mixing/matching
suffix codes due to lack of knowledge. I do know
this much: The Motorola part is operating with an
external EPROM, so the chip itself is ROMless.
Assistance with this mess would be much
appreciated. Thanks in advance.
-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies --
http://www.bluefeathertech.com
kyrrin (at) bluefeathertech do/t c=o=m
"If Salvador Dali had owned a computer, would it
have been equipped with surreal ports?"
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