HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Blog

MCUs Simplify Resolver-Based Motor Control Systems

NO RATINGS
View Comments: Oldest First|Newest First|Threaded View
<<  <  Page 2/2
Jon Titus
User Rank
Blogger
Some Older MCUs Still Alive
Jon Titus   10/29/2012 11:55:58 AM
NO RATINGS
Hi, William.  Yes, watch you don't get cut on the "bleeding edge" of new technologies.  That said, the venerable 8051 continues to live as does the Z80 family.  I believe Zilog still has variants of the Z80 family and Rabbit Semiconductor (now part of Digi International) has modules based on the Z80 architecture.  Of course the x86 architecture continues to roll on, too.

William K.
User Rank
Platinum
Re: Some Older MCUs Still Alive
William K.   10/29/2012 4:50:12 PM
NO RATINGS
Jon,

Yes, it is true that the 8051 is still around, and in quite a few variants, as well. But try to find an 8047. And of course the *86 is still around. But neither of those would be considered a "small" processor, I don't think. Also, it looks a bit like many of the newer crop of small devices are constantly changing, hoping to find a configuration that is what everybody wants. The less popular versions don't lkast as long. Sort of like the flat-pack CMOS ICs of a few years back.

Of course there are also those devices that go away because of yield problems, although that may be less common than a few years back. Presently it seems that Analog Devices has stopped producing one of the audio compressor devices, and a few other audio chips, for some reason. So products do go away.

Jon Titus
User Rank
Blogger
Re: Some Older MCUs Still Alive
Jon Titus   10/29/2012 5:11:59 PM
NO RATINGS
Yes, semiconductors do go away.  A company called Reticon--acquired years ago by EG&G--made a programmable filter I liked very much.  No replacement.  Likewise, Intersil manufactured a dual-slope (integrating) amalog-to-digital converter.  That went away, too, although Maxim made the chip, too, but I haven't checked recently.  There are some secondary-market companies that have stocks of older ICs for companies that need replacements.

There's a balance between choosing recent semiconductors that have some history and longevity vs. picking the latest-and-greatest devices that might be a "flash in the pan." Engineers and product designers should always ask a supplier about the longevity of a device or product line.

<<  <  Page 2/2
Partner Zone
More Blogs
Former DARPA official and Google executive Dr. Kaigham Gabriel believes sensor companies think too much like suppliers and need to bring their products closer to the consumer.
One way to keep a Formula One racing team moving at breakneck speed in the pit and at the test facility is to bring CAD drawings of the racing vehicleís parts down to the test facility and even out to the track.
Most of us would just as soon step on a cockroach rather than study it, but thatís just what researchers at UC Berkeley did in the pursuit of building small, nimble robots suitable for disaster-recovery and search-and-rescue missions.
Engineers at Festo were inspired by how a caterpillar builds its cocoon when designing its new 3D Cocooner printer.
A look at how five different companies have introduced design apps that make the process of moving a product from design concept through manufacturing more efficient.
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7 | 8 | 9


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Course June 28-30:
Sponsored by Proto Labs
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Technology Marketplace

Copyright © 2016 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service