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 1/2  >  >>
naperlou
User Rank
Blogger
More bits
naperlou   10/25/2012 10:35:54 AM
NO RATINGS
Jon, in the past this would be handled by an 8-bit MCU and some other circuitry.  The latest crop of 32-bit controllers with built in functionality make the 8-bit controllers obsolete.

Jon Titus
User Rank
Blogger
Re: More bits
Jon Titus   10/25/2012 11:00:08 AM
NO RATINGS
Hi, naperlou.  Right you are.  And the 32-bit devices have more types of communication peripherals, too--CAN, Ethernet, USB, SPI. I2C, etc., so chip creators have moved even more hardware onto silicon. That effort makes life easier for engineers and programmers.

Island_Al
User Rank
Gold
Re: More bits
Island_Al   10/26/2012 9:48:14 AM
NO RATINGS
The death of the little 8 bitters was announced several years ago, yet they still appear to be quite live with ever expanding capability.  Guess they never saw their obit, much like Mark Twains quote on the exaggeration of the rumors of his death!  As far as making life easier for engineers and programmers however I will disagree.  The reason is with every expansion of technology comes ever more complex solutions, and with it, ever more headaches to the designer.  Think autonomous cars for example, then the redundancy that must be built into them.  Engineering was never easy and will not be easy in the future.  In the 60s we used two transistors to make one flip flop, thus 36 bit registers took a lot of parts.  Sixty-four k "core" stacks were huge and expensive, but today I whine about having "only" 16GB in my machine.

Will 32 bit machines be replaced by 64 bit?  How about 128 bit guys with far more and faster registers?  What are the practical limits to bus width?  ASCII is still 8 bits wide.

I have been reading a lot on load sharing processor arrays lately.  Sort of like multitasking in hardware.  I'm not quite ready to send my 8 bit stuff to the Smithsonian quite yet.  We always live in an age of discovery and I'm very happy to be alive today.

 

Jon Titus
User Rank
Blogger
8-Bit MCUs Alive and Thriving
Jon Titus   10/26/2012 12:13:41 PM
NO RATINGS
Hi, Island_Al.  Yes, plenty of life left in 8-bit MCUs for a wide variety of uses.  A few days ago I sketched out a neat circuit for model-railroad enthusiasts that would use an 8-bit PIC in an 8-pin package--and an assembly-language program.

andyt
User Rank
Iron
eval board
andyt   10/26/2012 2:40:45 PM
NO RATINGS
That memory connector on that board looks scary and seems to say there's not enough memory on-chip to do much with it

tekochip
User Rank
Platinum
It's Alive!
tekochip   10/26/2012 3:05:38 PM
NO RATINGS
I have to disagree, 8 bits are still very much alive, especially when combined with a good compiler and plenty of memory, which is now pretty cheap. I was looking into crunching some color graphics a while ago and did two designs; one with an arm and the other with a SiLabs 8051. The 8051 was faster and cheaper in this application. In most of the small appliances and sensors I work on, an 8 or small 16 bit machine is still my first choice. It's hard to justify a full 32 bit core when I only need 4k of code.

Jon Titus
User Rank
Blogger
Re: eval board
Jon Titus   10/26/2012 3:24:52 PM
NO RATINGS
Hi, AndyT.  The "memory" connector is actually the connector for a TI MCU "ControlCard," already in place.  The odd perspective of the image places the upper edge of the ControlCard along the same line as the far edge of the small motherboard.  Look again and you'll see a board plugged in.  The MCU has a lot of memory.  The connector lets engineers and programmers use different types of ControlCards.

andyt
User Rank
Iron
Re: eval board
andyt   10/26/2012 8:32:33 PM
NO RATINGS
Ok, yeah. Now I see it Jon. It was an interesting illusion on the iPhone screen that lining up the top edges of the two boards created.

Jon Titus
User Rank
Blogger
Re: eval board
Jon Titus   10/26/2012 9:39:02 PM
NO RATINGS
Yes, the photo looks like an M.C. Escher drawing that skews perspective.

William K.
User Rank
Platinum
MCU simplifies resolver based system
William K.   10/28/2012 7:52:02 PM
NO RATINGS
Long after whatever MCU that you choose has gone out of production and is not available anywhere, thye same analog ICs will still be available from multiple makers and distributors stock. So if the anticipated product life is measured in days or months, then choose the MCU approach. But if it is a product with an expected lifetime of years, then make it out of sustainable parts. (A new expression?) Cutting edge stuff often causes bleeding.

Page 1/2  >  >>
Partner Zone
More Blogs
Get a load of these strange product designs. What's in the water these design engineers are drinking?
The Dutch are known for their love of bicycling, and they’ve also long been early adopters of green-energy and smart-city technologies. So it seems fitting that a town in which painter Vincent van Gogh once lived has given him a very Dutch-like tribute -- a bike path lit by a special smart paint in the style of the artist's “Starry Night” painting.
Ever wanted your own giant robot? Three engineers did, and now they want to make 15-ft, fighting MegaBots a household name.
Here are 10 examples of the wide range of new technology on display at Pack Expo in Chicago earlier this month.
For decades, engineers have worked to combat erosion by developing high-strength alloys, composites, and surface coatings. However, in a new paper, a team at Jilin University in China turned to one of the most deadly animals in the world for inspiration -- the yellow fat-backed scorpion.
Design News Webinar Series
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
11/6/2014 11:00 a.m. California / 2:00 p.m. New York
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Dec 1 - 5, An Introduction to Embedded Software Architecture and Design
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


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.
Last Archived Class
Sponsored by Littelfuse
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service