"""Via stack components for IHP PDK. Also includes NoFillerStack."""
from typing import Literal
import gdsfactory as gf
from .. import tech
from .ihp_pycell import NoFillerStack as no_filler_stackIHP
from .ihp_pycell import via_stack as via_stackIHP
from .utils import *
[docs]
@gf.cell
def via_stack(
bottom_layer: Literal[
"Activ",
"GatPoly",
"Metal1",
"Metal2",
"Metal3",
"Metal4",
"Metal5",
"TopMetal1",
"TopMetal2",
] = "Metal1",
top_layer: Literal[
"Activ",
"GatPoly",
"Metal1",
"Metal2",
"Metal3",
"Metal4",
"Metal5",
"TopMetal1",
"TopMetal2",
] = "Metal2",
vn_columns: int = 2,
vn_rows: int = 2,
vt1_columns: int = 1,
vt1_rows: int = 1,
vt2_columns: int = 1,
vt2_rows: int = 1,
) -> gf.Component:
"""Create a via stack component.
This function generates a layout for a via stack connecting a bottom
layer to a top layer. The number of columns and rows for standard vias
(Via1-Via4) and top vias (TopVia1, TopVia2) can be specified.
Args:
bottom_layer: Bottom layer name. Options: 'Activ', 'GatPoly', 'Metal1'-'Metal5', 'TopMetal1', 'TopMetal2'.
top_layer: Top layer name. Options: 'Activ', 'GatPoly', 'Metal1'-'Metal5', 'TopMetal1', 'TopMetal2'.
vn_columns: Number of columns for standard vias (Via1-Via4).
vn_rows: Number of rows for standard vias.
vt1_columns: Number of columns for TopVia1.
vt1_rows: Number of rows for TopVia1.
vt2_columns: Number of columns for TopVia2.
vt2_rows: Number of rows for TopVia2.
Returns:
gdsfactory.Component: The generated via stack test layout.
"""
params = {
"cdf_version": tech.techParams["CDFVersion"],
"Display": "Selected",
"b_layer": bottom_layer,
"t_layer": top_layer,
"vn_columns": vn_columns,
"vn_rows": vn_rows,
"vt1_columns": vt1_columns,
"vt1_rows": vt1_rows,
"vt2_columns": vt2_columns,
"vt2_rows": vt2_rows,
}
c = generate_gf_from_ihp(
cell_name="via_stack", cell_params=params, function_name=via_stackIHP()
)
# add ports to the component
layer_map = { # necessary for mapping layer names to tech layers
"Activ": tech.LAYER.Activdrawing,
"GatPoly": tech.LAYER.GatPolydrawing,
"Metal1": tech.LAYER.Metal1drawing,
"Metal2": tech.LAYER.Metal2drawing,
"Metal3": tech.LAYER.Metal3drawing,
"Metal4": tech.LAYER.Metal4drawing,
"Metal5": tech.LAYER.Metal5drawing,
"TopMetal1": tech.LAYER.TopMetal1drawing,
"TopMetal2": tech.LAYER.TopMetal2drawing,
}
gf.add_ports.add_ports_from_boxes(
c,
pin_layer=(layer_map[bottom_layer]),
port_type="electrical",
ports_on_short_side=False,
auto_rename_ports=False,
)
c.ports["e1"].name = "bottom"
gf.add_ports.add_ports_from_boxes(
c,
pin_layer=(layer_map[top_layer]),
port_type="electrical",
ports_on_short_side=False,
auto_rename_ports=False,
)
c.ports["e1"].name = "top"
return c
[docs]
@gf.cell
def no_filler_stack(
width: int = 10,
length: int = 10,
noAct: Literal["Yes", "No"] = "Yes", # no active filler
noGP: Literal["Yes", "No"] = "Yes", # no GatePoly filler
noM1: Literal["Yes", "No"] = "Yes", # no M1 filler
noM2: Literal["Yes", "No"] = "Yes", # no M2 filler
noM3: Literal["Yes", "No"] = "Yes", # no M3 filler
noM4: Literal["Yes", "No"] = "Yes", # no M4 filler
noM5: Literal["Yes", "No"] = "Yes", # no M5 filler
noTM1: Literal["Yes", "No"] = "Yes", # no TM1 filler
noTM2: Literal["Yes", "No"] = "Yes", # no TM2 filler
) -> gf.Component:
"""Create a NoFiller via stack test component.
This function generates a via stack layout without filler structures
for the selected layers. Each layer can be individually excluded
from filler insertion using Yes/No flags.
Args:
width: Device width in micrometers.
length: Device length in micrometers.
noAct: Exclude filler for the active layer. Options: 'Yes', 'No'.
noGP: Exclude filler for the GatePoly layer. Options: 'Yes', 'No'.
noM1: Exclude filler for Metal1. Options: 'Yes', 'No'.
noM2: Exclude filler for Metal2. Options: 'Yes', 'No'.
noM3: Exclude filler for Metal3. Options: 'Yes', 'No'.
noM4: Exclude filler for Metal4. Options: 'Yes', 'No'.
noM5: Exclude filler for Metal5. Options: 'Yes', 'No'.
noTM1: Exclude filler for TopMetal1. Options: 'Yes', 'No'.
noTM2: Exclude filler for TopMetal2. Options: 'Yes', 'No'.
Returns:
gdsfactory.Component: The generated NoFiller via stack layout.
"""
params = {
"cdf_version": tech.techParams["CDFVersion"],
"Display": "Selected",
"w": width * 1e-6,
"l": length * 1e-6,
"minLW": 10e-9, # hardcoded not in tech file
"noAct": noAct,
"noGP": noGP,
"noM1": noM1,
"noM2": noM2,
"noM3": noM3,
"noM4": noM4,
"noM5": noM5,
"noTM1": noTM1,
"noTM2": noTM2,
}
c = generate_gf_from_ihp(
cell_name="no_filler_stack",
cell_params=params,
function_name=no_filler_stackIHP(),
)
# Adjust port orientations, for metal1 so every other port points in the opposite direction
# for i, port in enumerate(c.ports):
# port.orientation = 90 if port.name.startswith("DS_") and i % 2 == 1 else port.orientation
return c
if __name__ == "__main__":
# Test the components
c = via_stack(bottom_layer="Metal1", top_layer="Metal5")
c.show()
