What is the purpose of STA?

Static timing analysis (STA) is a method of validating the timing performance of a design by checking all possible paths for timing violations.

What is STA in DFT?

Static timing analysis is one of the techniques used to verify the timing of a digital design. STA is static since the analysis of the design is carried out statically and does not depend upon the data values being applied at the input pins of the design.

What is STA in VLSI?

Static Timing Analysis (STA) is one of the techniques to verify design in terms of timing. This kind of analysis doesn’t depend on any data or logic inputs, applied at the input pins. The input to an STA tool is the routed netlist, clock definitions (or clock frequency) and external environment definitions.

What is STA process?

The Single Technology Appraisal (STA) process was introduced by NICE in 2005 as a means of undertaking “fast track” appraisals of single technologies, for single indications.

What is worst negative slack?

This shows the WNS (Worst Negative slack or Worst Case Setup time Slack). A positive worst case setup time slack means the constraint is met and a negative slack means that the longest path has a path delay longer than the clock period of the circuit.

What is STA in digital?

Static timing analysis (STA) is a simulation method of computing the expected timing of a digital circuit without requiring a simulation of the full circuit.

What is wrapper in DFT?

The wrapper cells on the core inputs capture data from the UDL, while the wrapper cells on the output side isolate the UDL from capturing data from the core and also launch test data into the UDL. During capture, the input wrapper cells capture the scan data from the UDL. The wrapper cells are disabled.

What is scenario in Sta?

A scenario is a combination of operating condition(process, voltage, temperature) and operating mode (like functional mode, test mode). So if there are 8 scenarios defined, then 8 worker processes will be launched which will be managed by single master.

What is better dynamic or static?

Sometimes, it is better for a computer or device to use a static IP address; sometimes a dynamic IP address works best. A static IP address is more likely to be relevant for a business, while a dynamic IP address is appropriate for a home network.

Is static or dynamic testing better?

Static testing is more cost-effective than dynamic testing. Static testing is done in verification stage whereas dynamic testing is done in validation stage. In static testing code is being examined without being executed whereas In dynamic testing, code is being executed and tested without necessarily being examined.

What is critical path in Sta?

Critical Path: the path in the entire design with the maximum delay. – This could be from state element to state element, or from input to state element, or state element to output, or from input to output (unregistered paths).