mirror of https://github.com/VLSIDA/OpenRAM.git
Small format cleanup
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mrg
parent
da334e47aa
commit
3074cf3b86
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@ -7,7 +7,7 @@
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#
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import contact
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import debug
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from tech import drc, parameter
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from tech import drc, parameter, layer
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from vector import vector
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from ptx import ptx
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from globals import OPTS
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@ -975,42 +975,44 @@ class pbitcell(bitcell_base.bitcell_base):
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"""
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Connects wells between ptx modules and places well contacts
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"""
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# extend pwell to encompass entire nmos region of the cell up to the
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# height of the tallest nmos transistor
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max_nmos_well_height = max(self.inverter_nmos.well_height,
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self.readwrite_nmos.well_height,
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self.write_nmos.well_height,
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self.read_nmos.well_height)
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well_height = max_nmos_well_height + self.port_ypos \
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- self.nwell_enclose_active - self.gnd_position.y
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# FIXME fudge factor xpos
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well_width = self.width + 2*self.nwell_enclose_active
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offset = vector(self.leftmost_xpos - self.nwell_enclose_active, self.botmost_ypos)
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self.add_rect(layer="pwell",
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offset=offset,
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width=well_width,
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height=well_height)
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if "pwell" in layer:
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# extend pwell to encompass entire nmos region of the cell up to the
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# height of the tallest nmos transistor
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max_nmos_well_height = max(self.inverter_nmos.well_height,
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self.readwrite_nmos.well_height,
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self.write_nmos.well_height,
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self.read_nmos.well_height)
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well_height = max_nmos_well_height + self.port_ypos \
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- self.nwell_enclose_active - self.gnd_position.y
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# FIXME fudge factor xpos
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well_width = self.width + 2*self.nwell_enclose_active
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offset = vector(self.leftmost_xpos - self.nwell_enclose_active, self.botmost_ypos)
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self.add_rect(layer="pwell",
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offset=offset,
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width=well_width,
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height=well_height)
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# extend nwell to encompass inverter_pmos
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# calculate offset of the left pmos well
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inverter_well_xpos = -(self.inverter_nmos.active_width + 0.5 * self.inverter_to_inverter_spacing) \
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- self.nwell_enclose_active
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inverter_well_ypos = self.inverter_nmos_ypos + self.inverter_nmos.active_height \
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+ self.inverter_gap - self.nwell_enclose_active
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if "nwell" in layer:
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inverter_well_xpos = -(self.inverter_nmos.active_width + 0.5 * self.inverter_to_inverter_spacing) \
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- self.nwell_enclose_active
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inverter_well_ypos = self.inverter_nmos_ypos + self.inverter_nmos.active_height \
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+ self.inverter_gap - self.nwell_enclose_active
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# calculate width of the two combined nwells
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# calculate height to encompass nimplant connected to vdd
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well_width = 2 * (self.inverter_nmos.active_width + 0.5 * self.inverter_to_inverter_spacing) \
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+ 2 * self.nwell_enclose_active
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well_height = self.vdd_position.y - inverter_well_ypos \
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+ self.nwell_enclose_active + drc["minwidth_tx"]
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# calculate width of the two combined nwells
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# calculate height to encompass nimplant connected to vdd
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well_width = 2 * (self.inverter_nmos.active_width + 0.5 * self.inverter_to_inverter_spacing) \
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+ 2 * self.nwell_enclose_active
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well_height = self.vdd_position.y - inverter_well_ypos \
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+ self.nwell_enclose_active + drc["minwidth_tx"]
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# FIXME fudge factor xpos
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offset = [inverter_well_xpos + 2*self.nwell_enclose_active, inverter_well_ypos]
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self.add_rect(layer="nwell",
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offset=offset,
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width=well_width,
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height=well_height)
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# FIXME fudge factor xpos
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offset = [inverter_well_xpos + 2*self.nwell_enclose_active, inverter_well_ypos]
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self.add_rect(layer="nwell",
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offset=offset,
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width=well_width,
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height=well_height)
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# add well contacts
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# connect pimplants to gnd
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@ -196,6 +196,8 @@ class ptx(design.design):
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# The well is not included in the height and width
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self.height = self.poly_height
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self.width = self.active_width
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self.well_height = self.height
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self.well_width = self.width
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# This is the center of the first active contact offset (centered vertically)
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self.contact_offset = self.active_offset + vector(0.5 * self.active_contact.width,
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@ -353,10 +355,10 @@ class ptx(design.design):
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if not (well_name in layer or "vtg" in layer):
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return
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center_pos = self.active_offset + vector(0.5*self.active_width,
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0.5*self.active_height)
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well_ll = center_pos - vector(0.5*self.well_width,
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0.5*self.well_height)
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center_pos = self.active_offset + vector(0.5 * self.active_width,
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0.5 * self.active_height)
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well_ll = center_pos - vector(0.5 * self.well_width,
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0.5 * self.well_height)
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if well_name in layer:
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self.add_rect(layer=well_name,
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offset=well_ll,
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@ -450,7 +452,7 @@ class ptx(design.design):
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contact=self.add_via_center(layers=self.active_stack,
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offset=pos,
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size=(1, self.num_contacts),
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directions=("V","V"),
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directions=("V", "V"),
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implant_type=self.implant_type,
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well_type=self.well_type)
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