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Simplify VLSI (timing, power, noise, correlation, reliability) modeling and analysis with Characterization Description Format
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examples Add files via upload Jan 23, 2020


Characterization Description Format

CDF or characterization description format is effective in capturing properties of VLSI cells and IPS at several levels of abstraction.

  1. Functional Level for VLSI cell
  2. Logic level stimulus
  3. Electrical level stimulus
  4. Measurement of models (timing, power etc)

It is a baseline proposal for a standard to act as an interface across VLSI software(s) using and/or interfacting with SPICE simulators.

CDF in characterization

It is currently being used in characterization softwares for cells, memories, and IPs.

Using CDF in characterization flow

Table below covers types of currently supported stimulus types.

No. Stimululus Types
1. delay
2. tristate
3. incap
4. rcap
5. ipower
6. dpower
7. apower
8. lpower
9. maxcap
10. setup
11. hold
12. recovery
13. removal
14. mpw
15. ccsn_vivo
16. ccsn_prop
17. ccsn_volt
18. ccsn_mcap

Other CDF usage

CDF in timing verification

CDF in power analysis

CDF in noise analysis

CDF in reliability analysis

CDF in timing correlation

CDF in liberty generation

CDF in liberty QA

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