.data command problem in hspice

[shaq]

enddata + hspice

Dear all,

I have a size of 100*75 matrix generated by MATLAB, wanna feed to a spice file to simulate by using Hspice.

I used .data p mer file='0_0.fn' vtest1=1 vtest2=2 .....vtest75=75

, and found error such as "number of parameters exceeds 50."

I just checked Hspice manual, found this sentence as written below

"Each .DATA statement can contain up to 50 parameters. If you need more than
50 parameters in a single .DATA statement, place 50 or fewer parameters in
the .DATA statement, and use .ALTER statements for the remaining
parameters."

So, I modified my spice file into as shown below

.data p mer file='0_0.fn' vtest1=1 vtest2=2 .....vtest50=50
.enddata

.alter
.data p mer file='0_0.fn' vtest51=51 vtest52=52.... vtest75=75
.enddata

but, still got error message as shown below

**error** no definition for 0:vtest51

**error** no definition for 0:vtest52
.
.
.
**error** no definition for 0:vtest75

What's going on my .data command?

Plz help me to solve this problem, thanks!!!!!!!

 

[Blackuni]

examples data command in hspice

Hi,


can u attach the data sweep + alter part of your netlist? I think this will help to figure out what's going on.

Thanks

 

[shaq]

no definition for error in hspice

Ok, my question is "how to solve the .data command constraint of 50 parameters in hspice ?"

 

[markjiang]

+hspice more than 50 parameters data statement

Maybe there are some ways to deal with it.

First, you have to define the parameters vtest5* (* is 1~75) with .param command in the global variants.

The second, the commands are different as below:
.data p MER file='0_0.fn' vtest1=1 vtest2=2 .....vtest50=50 and
.data p LAM file='0_0.fn' vtest1=1 vtest2=2 .....vtest50=50
I think you have to use the LAM swithc other than MER.

If you change like this , there are also some erros. and your stimulus are digital,
you can try .vector command to edit your stimulus source.
[/b]

 

[waosai]

hspice no definition for error

U can use .vector statement in hspice as following:
(1) In hspice file, add a statement:
.vector "PATH/test.vec"
(2) In "test.vec" file, write the following code (here,7bit vector is used):
radix 1111111 /* the radix is binary for each vector bit.
vname data<7> data<6> data<5> data<4> data<3> data<2> data<1> /* the vector bits name which is the same with that of your circuit
io iiiiiii /* the vector is input
tunit ns /* the time unit is "ns"
trise 1 1111111 /* rise time is 1ns for all the vector bit
tfall 1 1111111 /* fall time is 1ns for all the vector bit
vih 1.8 1111111 /* high voltage level is 1.8V
vil 0.0 1111111 /* low voltage level is 0.0V
period 40 /*the period of data is 40ns. You can set whatever you want

good luck!