| # Copyright 2022 GlobalFoundries PDK Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| ######################################################################################################################## |
| # MIM Capacitor Generator for GF180MCU |
| ######################################################################################################################## |
| |
| import pya |
| import os |
| from .draw_mimcap import * |
| |
| mim_l = 0.28 |
| mim_w = 0.28 |
| |
| class mimcap(pya.PCellDeclarationHelper): |
| """ |
| MIM capacitor Generator for GF180MCU |
| """ |
| |
| def __init__(self): |
| |
| # Initializing super class. |
| super(mimcap, self).__init__() |
| |
| #===================== PARAMETERS DECLARATIONS ===================== |
| self.Type_handle = self.param("mim_option", self.TypeList, "MIM-Option") |
| self.Type_handle.add_choice("MIM-A", "MIM-A") |
| self.Type_handle.add_choice("MIM-B", "MIM-B") |
| |
| self.Type_handle2 = self.param("metal_level", self.TypeList, "Metal level (MIM-B)") |
| self.Type_handle2.add_choice("M4", "M4") |
| self.Type_handle2.add_choice("M5", "M5") |
| self.Type_handle2.add_choice("M6", "M6") |
| |
| self.param("l", self.TypeDouble,"Length", default=mim_l, unit="um") |
| self.param("w", self.TypeDouble,"Width", default=mim_w, unit="um") |
| self.param("area", self.TypeDouble,"Area", readonly=True, unit="um^2") |
| self.param("perim", self.TypeDouble,"Perimeter", readonly=True, unit="um") |
| |
| def display_text_impl(self): |
| # Provide a descriptive text for the cell |
| return "mimcap(L=" + ('%.3f' % self.l) + ",W=" + ('%.3f' % self.w) + ")" |
| |
| def coerce_parameters_impl(self): |
| # We employ coerce_parameters_impl to decide whether the handle or the numeric parameter has changed. |
| # We also update the numerical value or the shape, depending on which on has not changed. |
| self.area = self.w * self.l |
| self.perim = 2*(self.w + self.l) |
| # w,l must be larger or equal than min. values. |
| if (self.l) < mim_l: |
| self.l = mim_l |
| if (self.w) < mim_w: |
| self.w = mim_w |
| if (self.mim_option) == "MIM-A": |
| self.metal_level = "M3" |
| |
| def can_create_from_shape_impl(self): |
| # Implement the "Create PCell from shape" protocol: we can use any shape which |
| # has a finite bounding box |
| return self.shape.is_box() or self.shape.is_polygon() or self.shape.is_path() |
| |
| def parameters_from_shape_impl(self): |
| # Implement the "Create PCell from shape" protocol: we set r and l from the shape's |
| # bounding box width and layer |
| self.r = self.shape.bbox().width() * self.layout.dbu / 2 |
| self.l = self.layout.get_info(self.layer) |
| |
| def transformation_from_shape_impl(self): |
| # Implement the "Create PCell from shape" protocol: we use the center of the shape's |
| # bounding box to determine the transformation |
| return pya.Trans(self.shape.bbox().center()) |
| |
| def produce_impl(self): |
| option = os.environ['GF_PDK_OPTION'] |
| if option == "A": |
| if (self.mim_option) == "MIM-B": |
| raise TypeError(f"Current stack ({option}) doesn't allow this option") |
| else: |
| if (self.mim_option) == "MIM-A": |
| raise TypeError(f"Current stack ({option}) doesn't allow this option") |
| np_instance = draw_mimcap(self.layout, self.l, self.w, self.mim_option , self.metal_level) |
| write_cells = pya.CellInstArray(np_instance.cell_index(), pya.Trans(pya.Point(0, 0)), |
| pya.Vector(0, 0), pya.Vector(0, 0), 1, 1) |
| |
| self.cell.insert(write_cells) |
| self.cell.flatten(1) |
