Using Capture CIS with a Digital Circuit

Divide-by-3 asynchronous counter

(See Appendix B on page 271 of the Lab Manual.)
  1. Read Introduction to Cadence's Capture CIS for users of Schematics by Nicholas Ganic.

  2. Launch Capture CIS by clicking Start -> Programs -> Cadence PSD 15.1 -> Capture CIS.

  3. Select PVB Design Studio With Capture CIS(<- default) and click OK.

  4. On Capture CIS window, click File -> New -> Project....

  5. Enter Name:XXX, Location; C:/Documents and ..../...../My Documents (<- default) then click OK.

  6. On Create PSpice Project, select Create based upon an existing project (<- default) and enter empty_all_libs.opj (<-default) and click OK.

  7. On C:/Document.... window expand XXX and schematic1 then double click PAGE1. This dsplays I-(SCHEMATIC1: PAGE1) window.

  8. Click Place -> Part... (or Shift + P), then type in part name 555B in the field and press Enter.

  9. Bring it to and place it on the window. Use Esc button (or right mouse) to deselect the part.

  10. Repeat for other parts 7476, 7432, 7486, DigClock/Source, VDC, 0/Source (<- AGND).

  11. Click Place -> Wire (shift + W) and complete the wiring of the schematic as shown in Figure B1.

  12. Change attribute values; VDC -> 5V, both on/off times -> 25us.

  13. Click PSpice -> New Simulation Profile. This displays New Simulation dialog box.

  14. Type in your simulation file name, YYY and press Create button, then a dialog box entitled Simulation Setting-YYY appears.

  15. Press Analysis tab(<- default) select analysis type: Time Domain(Transient) (<- default) and set Run to: = 0.5ms and Start saving data after: = 0(<- default).

  16. Check the box for Skip the initial ....... and click OK.

  17. Press Option tab and select Gate-level Simulation then select Timing Mode: = Typical (<- default) and Initialize all flip-flops to: = O and click OK.

  18. Click PSpice -> Run (or F11) to simulate the circuit. This saves the circuit and creates a netlist automatically. After simulation a window entitled SCHEMATIC XXX-PSpice A/D appers.

  19. Click Trace -> Add Trace (or insert) and select waveforms to be displayed.

  20. Happy Simulation!



Figure B1.




Note a glitch at 30us and delay times between signals.