Subject:
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Re: what variety of 6811 can be used?
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 2 Feb 1999 20:08:17 GMT
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Original-From:
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Fred G. Martin <[fredm@media]NoMoreSpam[.mit.edu]>
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Viewed:
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816 times
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> > I know that the 'A1FN is used in the design, but can others be
> > substituted with minimal or no extra effort? If so, then which chips in
> > particular can be substituted. I'm interested in using the 68HC11E1
> > because of its 512 bytes of RAM.
why does the 512 bytes matter? the HB has 32K of external ram. i
guess if you're planning to do rom-able code development then i
understand.
there's very little difference between the e and a series. the port A
counter/timer pins are slightly more configurable in the e series.
also the e series has a more finicky rom bootstrap routine, making it
less compatible with the boot loaders.
fred
ps. FN is the package style: 52 pin PLCC.
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Message has 1 Reply:
 | | Re: what variety of 6811 can be used?
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| Everyone and Fred, Just to let everyone know, Motorola is currently doing an "End of Life" buy on the 68HC11A family. I think the plan is that we will stop making them by the end of the year. We are moving all customers over to the 68HC11E family. (...) (26 years ago, 3-Feb-99, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | Re: what variety of 6811 can be used?
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| Steve - - - As a HandyBoard *old timer* (I've had mine for almost two months) I've found that the best source of 68HC11 info is Motorola. Their documentation is *free*. Here are 3 manuals that are a must: M68HC11RM/AD Reference Manual MC68HC11A8/D (...) (26 years ago, 2-Feb-99, to lugnet.robotics.handyboard)
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