ContactHole

class picazzo3.electrical.contact.cell.ContactHole

Regular via to connect M1 (top_layer) to the silicide layer (bottom_layer) using a contact layer (via_layer)

Parameters:

name: String that contains only ISO/IEC 8859-1 (extended ASCII py3) or pure ASCII (py2) characters

The unique name of the pcell

Views

class Layout

A standard electrical via connect M1 (top_layer) to the silicide layer (bottom_layer) using a contact layer (via_layer).

The shape of each layer in the via is a regular polygon with a n_o_sides sides. and each layer element (top, bottom and via) is defined through the following properties:

• top_process

• top_purpose

• top_width

analogous properties are defined for the other layers.

All those properties can be overridden, but they are defaulting to the values found in TECH.VIAS.CONTACT_HOLE

Parameters:

via_width: float and number > 0

Width of the via layer (2 * inner radius of the polygon)

via_purpose: PatternPurpose

Purpose of the via layer.

via_process: ProcessLayer

Process of the via layer.

bottom_width: float and number > 0

Width of the bottom layer (2 * inner radius of the polygon)

bottom_purpose: PatternPurpose

Purpose of the bottom layer.

bottom_process: ProcessLayer

Process of the bottom layer.

top_width: float and number > 0

Width of the top layer (2 * inner radius of the polygon)

top_purpose: PatternPurpose

Purpose of the top layer.

top_process: ProcessLayer

Process of the top layer.

n_o_sides: int and number > 0

Number of sides of the polygon used for the contact hole

view_name: String that contains only alphanumeric characters from the ASCII set or contains _$. ASCII set is extended on PY3.

The name of the view

Other Parameters:

via_shape: locked

via_layer: locked

layers: locked

shapes: locked

bottom_shape: locked

bottom_layer: locked

top_shape: locked

top_layer: locked

Examples

# Using the default contact hole.
import si_fab.all as pdk  # noqa: F401
from picazzo3.electrical.contact import ContactHole

cell = ContactHole()
layout = cell.Layout()
layout.visualize(annotate=True)

import si_fab.all as pdk  # noqa: F401
from picazzo3.electrical.contact import ContactHole

cell = ContactHole()
layout = cell.Layout(n_o_sides=8, top_width=1.0, bottom_width=0.8, via_width=0.2)
layout.visualize(annotate=True)