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Add npc option to contact

This commit is contained in:
Matt Guthaus 2019-12-11 09:09:59 -08:00
parent 978693eb2a
commit f9a66e86b4
1 changed files with 22 additions and 0 deletions
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22
compiler/base/contact.py
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@ -56,6 +56,7 @@ class contact(hierarchy_design.hierarchy_design):
self.create_contact_array() self.create_contact_array()
self.create_first_layer_enclosure() self.create_first_layer_enclosure()
self.create_second_layer_enclosure() self.create_second_layer_enclosure()
self.create_nitride_cut_enclosure()
self.height = max(obj.offset.y + obj.height for obj in self.objs) self.height = max(obj.offset.y + obj.height for obj in self.objs)
self.width = max(obj.offset.x + obj.width for obj in self.objs) self.width = max(obj.offset.x + obj.width for obj in self.objs)
@ -72,6 +73,7 @@ class contact(hierarchy_design.hierarchy_design):
(first_layer, via_layer, second_layer) = self.layer_stack (first_layer, via_layer, second_layer) = self.layer_stack
self.first_layer_name = first_layer self.first_layer_name = first_layer
self.second_layer_name = second_layer self.second_layer_name = second_layer
# Contacts will have unique per first layer # Contacts will have unique per first layer
if via_layer == "contact": if via_layer == "contact":
if first_layer in ("active", "poly"): if first_layer in ("active", "poly"):
@ -81,6 +83,7 @@ class contact(hierarchy_design.hierarchy_design):
else: else:
self.via_layer_name = via_layer self.via_layer_name = via_layer
def setup_layout_constants(self): def setup_layout_constants(self):
""" Determine the design rules for the enclosure layers """ """ Determine the design rules for the enclosure layers """
@ -150,6 +153,25 @@ class contact(hierarchy_design.hierarchy_design):
height=self.contact_width) height=self.contact_width)
offset = offset + vector(self.contact_pitch, 0) offset = offset + vector(self.contact_pitch, 0)
def create_nitride_cut_enclosure(self):
""" Special layer that encloses poly contacts in some processes """
# Check if there is a special poly nitride cut layer
if "npc" not in layer.keys():
return
# Only add for poly layers
if self.first_layer_name == "poly":
self.add_rect(layer="npc",
offset=self.first_layer_position,
width=self.first_layer_width,
height=self.first_layer_height)
elif self.second_layer_name == "poly":
self.add_rect(layer="npc",
offset=self.second_layer_position,
width=self.second_layer_width,
height=self.second_layer_height)
def create_first_layer_enclosure(self): def create_first_layer_enclosure(self):
# this is if the first and second layers are different # this is if the first and second layers are different
self.first_layer_position = vector( self.first_layer_position = vector(