dynamic stop time in transient analysis

Dear Hazem,

support.cadence.com/.../techpubDocViewerPage userid="502943" url="~/cadence_technology_forums/f/custom-ic-design/47900/dynamic-stop-time-in-transient-analysis"]

Is there anyway to make the transient analysis stop on a dynamic time, in other words can I set the simulation to stop when a signal or specific temperature is reached? 

I have to run my analysis for as long as a specific signal has not reached (stress test)!!!

Suppose you include an assert statement and assign the level of assertion as fatal? By assigning the level to fatal, this will terminate your simulation. Documentation on the syntax of the assertion statement is at URL:

https://support.cadence.com/apex/techpubDocViewerPage?path=spectreuser%2Fspectreuser20.1%2Fchap12.html

Shawn

Can you please explain for me where I can specify these assertions? am still pretty much beginner and using just the GUI in ADE XL

Dear Hazem,

Hazem Al Indari said:

Can you please explain for me where I can specify these assertions? am still pretty much beginner and using just the GUI in ADE XL

From the Explorer GUI, the checks and assertions options are shown in Figure 1. As you may know, ADE XL is no longer supported and I would suggest you migrate to ADE Explorer or Assembler. The latter two tools will import your ADE XL state directly and create an Explorer/Assembler maestro state. There is also a Rapid Adoption Kit for the use of assertions at the Cadence On-line support site at URL:

https://support.cadence.com/apex/articleattachmentportal?id=a1O0V0000091BiHUAU&pageName=ArticleContent&attachId=0690V000006IYEdQAO&sq=null&caseSessionKey=null

I hope this helps Hazem,

Shawn

Figure 1

I did initially think that the request might have been satisfied by the ability to specify event-triggered capabilities within transient as described in the documentation here: Spectre Classic Simulator, Spectre APS, Spectre X, and Spectre XPS User Guide -- Analyses - Performing Event-Triggered Analysis During Transient Analysis . However, that can be used to describe an event for the dynamic parameters capability, for actimes/infotimes, and for a few other things - but not the stop time of the simulation. The event can be defined by an assert (using the mechanism that Shawn suggested) or a variable in a Verilog-A model.

The checks/asserts are also available in ADE XL (much as I would prefer you to move to using ADE Explorer/Assembler, I should point out that the UI exists in ADE XL too). 

You could also use the $finish_current_analysis task in a Verilog-A model that detects when the condition has arisen that you want to stop at. Search for this on the support site and you should find some useful info too...

Andrew.

Hi,

you could try the spectreMDL autostop feature, discussed here:

Article (11268710) Title: How to use autostop feature in ADE/OCEAN to stop spectre once the given measurements are computed in IC6.1.X?
URL: https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nVHHEA2

The solution is showing it on the (now retired) ADE interface, but Explorer/Assembler also support it as far as I know. The menu is available through
the context menu with a right mouse button click on a test.

Kind regards,

Marc