Characterization Description Format
CDF or characterization description format is effective in capturing properties of VLSI cells and IPS at several levels of abstraction.
- Functional Level for VLSI cell
- Logic level stimulus
- Electrical level stimulus
- 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.
It is currently being used in characterization softwares for cells, memories, and IPs.
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 |