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Discussion Groups | | HC11A variants


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HC11A variants - Mark Schultz - Jul 12 0:37:00 2004

--- In , "Bob Smith" <bobsmith5@v...> wrote:
> Mark, I _may_ have an old, used E1 laying around. I could get it
> out and test it and the BPROT register with JBUG11 if you could
> find a way of getting it to Angel Prints.
>
> Bob Smith

First, thanks to both Tony and Bob for clearing up the issue of just
what resource(s) are available on the various A-series parts. FWIW,
I agree with everything they said, esp. Bob's comments regarind the
screening process that Mot used/uses to designate A-series sub-part
numbers.

FWIW, I suspect a similar sort of screening process is used to
assign speed grades to HC11's that were, and are, in production.
Also, there have been a number of 'die shrink' mask/layout revisions
made in the HC11's production history which have undoubtedly
improved yields for the higher speed grade devices. But I digress.

Bob - I appreciate your offer to provide a E1 for "Angel Printer's"
use, but this is not necessary - I have quite a few HC11's in my
parts collection. I even managed to acquire some E2's not too long
from a seller on eBay (for a very good price), as well as a two
tubes worth of F1's. I also have about a dozen 711E9's (yes, the
rare EPROM devices!) and a few dozen originally-destined-for-
disposal pre-programmed OTP 711E20's. At one time in the past, I
even had an extremely rare 811A (8K EEPROM!) part, but alas, this
part was lost in a fire that took out my lab some years ago :(

I have been in direct contact with "Angel Printer" (via Yahoo IM)
and have conditionally offered to send her a few HC11's from my
collection, assuming one can ship to her location (in the
Phillipines) from the U.S. Left Coast without undue bureaucracy and
expense. I have also suggested that she consider redesigning her
hardware to use expanded bus mode, assuming the loss of ports B & C
is tolerable. Doing so would be sort of a waste though, since I am
given to understand that her application is very simple and would
easily fit within 512 bytes.





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Re: HC11A variants - Bob Smith - Jul 13 12:26:00 2004


--- Avoid computer viruses, Practice safe hex ---

-- Specializing in small, cost effective
embedded control systems --

http://www.smithmachineworks.com/embedprod.html Robert L. (Bob) Smith
Smith Machine Works, Inc.
9900 Lumlay Road
Richmond, VA 23236 804/745-2608
----- Original Message -----
From: "Mark Schultz" <>
To: <>
Sent: Monday, July 12, 2004 1:37 AM
Subject: [m68HC11] HC11A variants > --- In , "Bob Smith" <bobsmith5@v...> wrote:
> > Mark, I _may_ have an old, used E1 laying around. I could get it
> > out and test it and the BPROT register with JBUG11 if you could
> > find a way of getting it to Angel Prints.
> >
> > Bob Smith
>
> First, thanks to both Tony and Bob for clearing up the issue of just
> what resource(s) are available on the various A-series parts. FWIW,
> I agree with everything they said, esp. Bob's comments regarind the
> screening process that Mot used/uses to designate A-series sub-part
> numbers.
>
> FWIW, I suspect a similar sort of screening process is used to
> assign speed grades to HC11's that were, and are, in production.
> Also, there have been a number of 'die shrink' mask/layout revisions
> made in the HC11's production history which have undoubtedly
> improved yields for the higher speed grade devices. But I digress.
>
> Bob - I appreciate your offer to provide a E1 for "Angel Printer's"
> use, but this is not necessary - I have quite a few HC11's in my
> parts collection. I even managed to acquire some E2's not too long
> from a seller on eBay (for a very good price), as well as a two
> tubes worth of F1's. I also have about a dozen 711E9's (yes, the
> rare EPROM devices!) and a few dozen originally-destined-for-
> disposal pre-programmed OTP 711E20's. At one time in the past, I
> even had an extremely rare 811A (8K EEPROM!) part, but alas, this
> part was lost in a fire that took out my lab some years ago :(
>
> I have been in direct contact with "Angel Printer" (via Yahoo IM)
> and have conditionally offered to send her a few HC11's from my
> collection, assuming one can ship to her location (in the
> Phillipines) from the U.S. Left Coast without undue bureaucracy and
> expense. I have also suggested that she consider redesigning her
> hardware to use expanded bus mode, assuming the loss of ports B & C
> is tolerable. Doing so would be sort of a waste though, since I am
> given to understand that her application is very simple and would
> easily fit within 512 bytes. >
> Yahoo! Groups Sponsor
> ADVERTISEMENT > --------------------------------------------------------------------------
------
> Yahoo! Groups Links
>
> a.. To




(You need to be a member of m68hc11 -- send a blank email to m68hc11-subscribe@yahoogroups.com )

Re: HC11A variants - Bob Smith - Jul 13 12:42:00 2004

Mark --

I am (very) slowly accumulating experience with international shipping with
my HC908QT/QY Rapid Development Boards. Here are some tips.

Stop at your local post office and pick up a copy of USPS Publication 51,
"International Postal Rates and Fees", the current Rev seems to be April
2003.

Shipping to the Phillipines shound be a no-brainer I suggest shipping by
Global Priority Mail. Package your articals and simply tote them to the
P.O. and tell the agent where you want it sent. I suggest filling out one
of their customs declaration forms before going to the counter.

Also consider taping your chips down to a piece of cardboard and shipping as
a "Flat Rate Envelope" (See Pub. 51) in a bubble pack for protection.

I advise a pre-visit to your local P.O. and have a brief discussion with
your local postal agent. If approached politely, they can be very helpful
and often have free boxes and/or envelopes for such items.

Of course, if you don't mind the expense, just take your package to the
nearest UPS or Fed X office and let them do the work.

Best wishes, Bob Smith

--- Avoid computer viruses, Practice safe hex ---

-- Specializing in small, cost effective
embedded control systems --

http://www.smithmachineworks.com/embedprod.html Robert L. (Bob) Smith
Smith Machine Works, Inc.
9900 Lumlay Road
Richmond, VA 23236 804/745-2608
----- Original Message -----
From: "Mark Schultz" <>
To: <>
Sent: Monday, July 12, 2004 1:37 AM
Subject: [m68HC11] HC11A variants > --- In , "Bob Smith" <bobsmith5@v...> wrote:
> > Mark, I _may_ have an old, used E1 laying around. I could get it
> > out and test it and the BPROT register with JBUG11 if you could
> > find a way of getting it to Angel Prints.
> >
> > Bob Smith
>
> First, thanks to both Tony and Bob for clearing up the issue of just
> what resource(s) are available on the various A-series parts. FWIW,
> I agree with everything they said, esp. Bob's comments regarind the
> screening process that Mot used/uses to designate A-series sub-part
> numbers.
>
> FWIW, I suspect a similar sort of screening process is used to
> assign speed grades to HC11's that were, and are, in production.
> Also, there have been a number of 'die shrink' mask/layout revisions
> made in the HC11's production history which have undoubtedly
> improved yields for the higher speed grade devices. But I digress.
>
> Bob - I appreciate your offer to provide a E1 for "Angel Printer's"
> use, but this is not necessary - I have quite a few HC11's in my
> parts collection. I even managed to acquire some E2's not too long
> from a seller on eBay (for a very good price), as well as a two
> tubes worth of F1's. I also have about a dozen 711E9's (yes, the
> rare EPROM devices!) and a few dozen originally-destined-for-
> disposal pre-programmed OTP 711E20's. At one time in the past, I
> even had an extremely rare 811A (8K EEPROM!) part, but alas, this
> part was lost in a fire that took out my lab some years ago :(
>
> I have been in direct contact with "Angel Printer" (via Yahoo IM)
> and have conditionally offered to send her a few HC11's from my
> collection, assuming one can ship to her location (in the
> Phillipines) from the U.S. Left Coast without undue bureaucracy and
> expense. I have also suggested that she consider redesigning her
> hardware to use expanded bus mode, assuming the loss of ports B & C
> is tolerable. Doing so would be sort of a waste though, since I am
> given to understand that her application is very simple and would
> easily fit within 512 bytes. >
> Yahoo! Groups Sponsor
> ADVERTISEMENT > --------------------------------------------------------------------------
------
> Yahoo! Groups Links
>
> a.. To




(You need to be a member of m68hc11 -- send a blank email to m68hc11-subscribe@yahoogroups.com )

Re: HC11A variants - Bob Smith - Jul 13 14:47:00 2004

> FWIW, I suspect a similar sort of screening process is used to
> assign speed grades to HC11's that were, and are, in production.
> Also, there have been a number of 'die shrink' mask/layout revisions
> made in the HC11's production history which have undoubtedly
> improved yields for the higher speed grade devices.

Certainly, this is all true. In fact it has resulted in "non-availability"
problems which are not really problems at all for the savvy buyer.

I have seen a number of cases where "tried and true" MCUs such as the
popular MC68HC711E9CFN2 (the basic E9 OTP) show up as "out-of-stock" or
"contact us for availability" caveats on standard parts searches at trusted
vendors.

In fact, what is happening as the HC11 devices appear to be entering the
"mature" stage of their life, the vendors (wisely) are trimming their
inventory of the older, "slower" parts since higher speed parts are readily
available at equal prices due to yield improvements.

The savvy buyer will be aware of this problem and promptly qualify the
faster parts in his current "in-production" applications. This is the kind
of service that a "good" buyer and production manager is supposed to bring
to their companies, but that does not always happen, and it falls to the
engineer to be aware of the situation and initiate the necessary action.

Best to all, Bob Smith > But I digress.

Ah . . ., also guilty ;-)

--- Avoid computer viruses, Practice safe hex ---

-- Specializing in small, cost effective
embedded control systems --

http://www.smithmachineworks.com/embedprod.html Robert L. (Bob) Smith
Smith Machine Works, Inc.
9900 Lumlay Road
Richmond, VA 23236 804/745-2608
----- Original Message -----
From: "Mark Schultz" <>
To: <>
Sent: Monday, July 12, 2004 1:37 AM
Subject: [m68HC11] HC11A variants > --- In , "Bob Smith" <bobsmith5@v...> wrote:
> > Mark, I _may_ have an old, used E1 laying around. I could get it
> > out and test it and the BPROT register with JBUG11 if you could
> > find a way of getting it to Angel Prints.
> >
> > Bob Smith
>
> First, thanks to both Tony and Bob for clearing up the issue of just
> what resource(s) are available on the various A-series parts. FWIW,
> I agree with everything they said, esp. Bob's comments regarind the
> screening process that Mot used/uses to designate A-series sub-part
> numbers.
>
> FWIW, I suspect a similar sort of screening process is used to
> assign speed grades to HC11's that were, and are, in production.
> Also, there have been a number of 'die shrink' mask/layout revisions
> made in the HC11's production history which have undoubtedly
> improved yields for the higher speed grade devices. But I digress.
>
> Bob - I appreciate your offer to provide a E1 for "Angel Printer's"
> use, but this is not necessary - I have quite a few HC11's in my
> parts collection. I even managed to acquire some E2's not too long
> from a seller on eBay (for a very good price), as well as a two
> tubes worth of F1's. I also have about a dozen 711E9's (yes, the
> rare EPROM devices!) and a few dozen originally-destined-for-
> disposal pre-programmed OTP 711E20's. At one time in the past, I
> even had an extremely rare 811A (8K EEPROM!) part, but alas, this
> part was lost in a fire that took out my lab some years ago :(
>
> I have been in direct contact with "Angel Printer" (via Yahoo IM)
> and have conditionally offered to send her a few HC11's from my
> collection, assuming one can ship to her location (in the
> Phillipines) from the U.S. Left Coast without undue bureaucracy and
> expense. I have also suggested that she consider redesigning her
> hardware to use expanded bus mode, assuming the loss of ports B & C
> is tolerable. Doing so would be sort of a waste though, since I am
> given to understand that her application is very simple and would
> easily fit within 512 bytes. >
> Yahoo! Groups Sponsor
> ADVERTISEMENT > --------------------------------------------------------------------------
------
> Yahoo! Groups Links
>
> a.. To



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