S
sid
Guest
Hello,
I'd like to know if someone has a model spice for eprom 27C256 or 27C512.
Thank's
I'd like to know if someone has a model spice for eprom 27C256 or 27C512.
Thank's
C
Chuck Harris
Guest
Why??? Are you planning to use it as an oscillator?
-Chuck Harris
sid wrote:
-Chuck Harris
sid wrote:
S
sid
Guest
Hello,
No, I Want to use it as a combinatorial circuit for a true table.
Thank's
"Chuck Harris" <cfharris@erols.com> a écrit dans le message de
news:40283cc7$0$3200$61fed72c@news.rcn.com...
No, I Want to use it as a combinatorial circuit for a true table.
Thank's
"Chuck Harris" <cfharris@erols.com> a écrit dans le message de
news:40283cc7$0$3200$61fed72c@news.rcn.com...
C
Chuck Harris
Guest
Hi Sid,
Then why do you need the spice model? The digital characteristics
of a 27C256 are very well behaved, and very well known. Spice models
deal primarily with analog phenomena.
The best that you could hope for in a spice model of such a complicated
device is a model that shows how the pads (pin drivers/receivers)
behave. Stuff that is mostly only of interest to the designer of the
27C256.
-Chuck Harris
sid wrote:
Then why do you need the spice model? The digital characteristics
of a 27C256 are very well behaved, and very well known. Spice models
deal primarily with analog phenomena.
The best that you could hope for in a spice model of such a complicated
device is a model that shows how the pads (pin drivers/receivers)
behave. Stuff that is mostly only of interest to the designer of the
27C256.
-Chuck Harris
sid wrote:
S
sid
Guest
Hi,
I have to build a system with a GAL , an eprom and a microcontroller.
I Want to simulate the GAL-EPROM before programming the microcontroller.
I can simulate the GAL with the JEDEC file in Pspice but not the EPROM (no
model).
Thank's
"Chuck Harris" <cfharris@erols.com> a écrit dans le message de
news:4028e6fe$0$3189$61fed72c@news.rcn.com...
I have to build a system with a GAL , an eprom and a microcontroller.
I Want to simulate the GAL-EPROM before programming the microcontroller.
I can simulate the GAL with the JEDEC file in Pspice but not the EPROM (no
model).
Thank's
"Chuck Harris" <cfharris@erols.com> a écrit dans le message de
news:4028e6fe$0$3189$61fed72c@news.rcn.com...
S
sid
Guest
Hi,
the simulation of the eprom by attaching the hex or bin file.
thank's
"sid" <e-sid@sympatico.ca> a écrit dans le message de
news:T21Wb.4472$lK.300504@news20.bellglobal.com...
the simulation of the eprom by attaching the hex or bin file.
thank's
"sid" <e-sid@sympatico.ca> a écrit dans le message de
news:T21Wb.4472$lK.300504@news20.bellglobal.com...
C
Chaos Master
Guest
sid called The Usenet Police (tm) of sci.electronics.cad and said to the cops, at
Tue, 10 Feb 2004 18:27:34 -0500:
27C256 but close. Look at the dig_* libraries.
PS: my PSpice knowledge is somewhat rusty (I've moved to SIMetrix).
--
"SPICE Error #3050: Singular matri^H^H^Hoops... this circuit is plain sh*t!"
Chaos MasterŽ - Posting from Brazil!
MSN/E-Mail address: wizard_of_yendor-|<|-@hotmail.com-|<|-
Remove the diodes [-|<|-], they're for protection (no pun intended).
Tue, 10 Feb 2004 18:27:34 -0500:
PSpice has some RAM and ROM models (IIRC) which may not be 100% equal to the
27C256 but close. Look at the dig_* libraries.
PS: my PSpice knowledge is somewhat rusty (I've moved to SIMetrix).
--
"SPICE Error #3050: Singular matri^H^H^Hoops... this circuit is plain sh*t!"
Chaos MasterŽ - Posting from Brazil!
MSN/E-Mail address: wizard_of_yendor-|<|-@hotmail.com-|<|-
Remove the diodes [-|<|-], they're for protection (no pun intended).
C
Charles Edmondson
Guest
Chaos Master wrote:
will see a lot of very interesting details in the creation of these
devices. If you get good at it, create a few models and submit them to
Cadence!
Charlie
Edmondson Engineering
Unique Solutions to Unusual Problems
in the PSpice Reference Guide in the digital models section, and you
will see a lot of very interesting details in the creation of these
devices. If you get good at it, create a few models and submit them to
Cadence!
Charlie
Edmondson Engineering
Unique Solutions to Unusual Problems
A
Andy Peters
Guest
"sid" <e-sid@sympatico.ca> wrote in message news:<ONdWb.5693$lK.368488@news20.bellglobal.com>...
fuses, or something? What language are you using to design the GAL?
Why aren't you using a logic simulator?
I'm truly amazed at the levels of complexity some people insist on.
-a
You're simulating the GAL in PSpice? What, are you hand-burning the
fuses, or something? What language are you using to design the GAL?
Why aren't you using a logic simulator?
I'm truly amazed at the levels of complexity some people insist on.
-a
J
Jim Thompson
Guest
On 11 Feb 2004 12:10:58 -0800, Bassman59a@yahoo.com (Andy Peters)
wrote:
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice
480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
wrote:
You apparently don't know that PSpice has mixed-signal capability?
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice
480)460-2350 | || E-mail Address at Website Fax
480)460-2142 | Brass Rat || http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
C
Chaos Master
Guest
Andy Peters called The Usenet Police (tm) of sci.electronics.cad and said to the
cops, at 11 Feb 2004 12:10:58 -0800:
It uses a JEDEC file as GAL "code". If you can get the demo look at the "frqchk"
example which is an excellent example of PSpice' digital simulation funcions.
--
Chaos MasterŽ - Posting from Brazil!
MSN/E-Mail address: wizard_of_yendor-|<|-@hotmail.com-|<|-
Remove the diodes [-|<|-], they're for protection (no pun intended).
cops, at 11 Feb 2004 12:10:58 -0800:
PSpice supports mixed-mode simulation.
It uses a JEDEC file as GAL "code". If you can get the demo look at the "frqchk"
example which is an excellent example of PSpice' digital simulation funcions.
--
Chaos MasterŽ - Posting from Brazil!
MSN/E-Mail address: wizard_of_yendor-|<|-@hotmail.com-|<|-
Remove the diodes [-|<|-], they're for protection (no pun intended).
C
Chaos Master
Guest
Charles Edmondson called The Usenet Police (tm) of sci.electronics.cad and said to
the cops, at Wed, 11 Feb 2004 09:46:54 -0800:
(read: loooots of free time) so I can learn the model creation details.
--
Chaos MasterŽ - Posting from Brazil!
MSN/E-Mail address: wizard_of_yendor-|<|-@hotmail.com-|<|-
Remove the diodes [-|<|-], they're for protection (no pun intended).
the cops, at Wed, 11 Feb 2004 09:46:54 -0800:
Is the PSpice reference guide downloadable from the Internet? I am on vacation
(read: loooots of free time) so I can learn the model creation details.
--
Chaos MasterŽ - Posting from Brazil!
MSN/E-Mail address: wizard_of_yendor-|<|-@hotmail.com-|<|-
Remove the diodes [-|<|-], they're for protection (no pun intended).
C
Charles Edmondson
Guest
Chaos Master wrote:
on them. Otherwise, it is time to search the web for a University ftp
site that has the PDF on it!
Charlie
Edmondson Engineering
Unique Solutions to Unusual Problems
then it is definitely downloadable, or if you have any of the CDs, its
on them. Otherwise, it is time to search the web for a University ftp
site that has the PDF on it!
Charlie
Edmondson Engineering
Unique Solutions to Unusual Problems