| View previous topic :: View next topic |
| Author |
Message |
theasus
Joined: 31 May 2009
Posts: 79
|
| Is there anyone to work with LM628? |
 Posted: Wed Nov 11, 2009 2:39 pm |
 |
|
Could you share your library or code about LM628??
I want to work with LM628 and PIC 16F877 together. But I need some extra information except datasheet and application note.
Could you help about this problem? |
|
 |
FvM
Joined: 27 Aug 2008
Posts: 2337
Location: Germany
|
|
| Posted: Thu Nov 12, 2009 12:55 am |
|
|
| I did not work with the said motion controller, but obviously, you need to implement a parallel interface, using at least 11 pins (8 data, nRD, nWR, 1 address bit), possibly reset and interrupt. Then you can control the device as documented. I think, all necessary information is in the datasheet. |
|
|
theasus
Joined: 31 May 2009
Posts: 79
|
|
| Posted: Thu Nov 12, 2009 12:36 pm |
|
|
I have read the datasheets and application notes but I couldn't work with LM628 and PIC16f877. I need source code or library of LM628. Is there anyone to have source code or library of LM628?
My compiler version is 4.068. |
|
|
FvM
Joined: 27 Aug 2008
Posts: 2337
Location: Germany
|
|
| Posted: Thu Nov 12, 2009 2:15 pm |
|
|
| Quote: | | but I couldn't work with LM628 and PIC16f877 |
Why?
LM628 is a part from older days, when National made digital circuits and processors, I guess at least 20 or more years old. It's rather unlikely to be found in recent designs. You get multiple dsPICs for the price of one. It's no problem to use it anyway (you should think of part's remaining lifetime, if it's a professional design). But I fear, you won't find much support by previous users. |
|
|
theasus
Joined: 31 May 2009
Posts: 79
|
|
| Posted: Sun Nov 15, 2009 12:30 pm |
|
|
| Ok thank you. Could you propose any different IC for motion control ? |
|
|
FvM
Joined: 27 Aug 2008
Posts: 2337
Location: Germany
|
|
| Posted: Sun Nov 15, 2009 12:50 pm |
|
|
I'm not aware of a recent PM motor controller, but may be other forum members know. HP/Agilent/Avagotech
HCTL-1100 is another legacy motion control product, but it's explicitely "not recommended for new
design". I think, the same could be said of LM628, but perhaps National is thinking different about it. Having a NMOS
chip in the modern CMOS world is already a kind of rarity.
I already mentioned, that a today's motion control solution would typically use a general purpose uP or DSP in my opinion. |
|
|
|
FAQ 
Search
Register
Profile 
Log in to check your private messages 
Log in
