Step by step:Layout editor

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Hands-on design training for MultiMEMS
D. Lapadatu and P. Ohlckers

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| 3.2 Step by step:Layout editor

Prerequisite steps

- Make a new cell
- Rename it to 'Resistor assembly'

Instantiate two 'Resistor 8k' cells

- Via the menu 'Draw- >Cell' , instantiate a copy of 'Resistor 8k'
- Use the '-' button of your keyboard to zoom out to you can see the whole cell
- Click near the centre of the window
- Click a second time offset from the first resistor to instantiate a second resistor
- Position one of the resistors to have a SUCON square centered over the origin of the cell.
- Adjust its position by right clicking and clicking on 'Draw- >Properties'

Your design should now look like this |

Rotate one cell 90 degrees

- Select the second resistor by right clicking and pressing 'Select- >Cell select' before you click on the second resistor when it is highlighted
- Press the escape button to exit the select mode.
- Rotate the cell 90 degrees by pressing the 'Draw- >Rotate' menu option.
- Set the centre of rotation by pressing in the centre of one SUCON square.
- Enter 90 in the box that appears and press OK.

Your design should now look like this |

Align the SUCON regions of the cells to connect the electrically

- With the second resistor cell still selected, press 'Draw->Move'
- Click on one corner of the SUCON square of the cell you have selected (Notice the mouse button guide on the very left of the application window)
- Click on the corner of the first resistor you would like to align with the first reference point clicked.

Your design should now look like this |

Browse the hierarchy

- Browse the cell hierarchy by pressing 'Cell->Select cell(list)'
- You should now see the two cells of the design.
- One cell named 'Resistor 8k'
- One cell named 'Resistor assembly' with two instantiations of 'Resistor 8k' in

- Extend the SUCON squares in 'Resistor 8k' by 2 microns in the length of the resistor. Remember to change the size of NOBOA and NOSUR accordingly
- Open the cell 'Resistor assembly' and review how the changes done in 'Resistor 8k'
- Undo the changes to 'Resistor 8k'
- Save the file

Your design should now look like this |
Save the file |

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Last updated: June. 2009 24.06.2009