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Ensure wells are spaced in the bank select and column decoder

This commit is contained in:
Matt Guthaus 2018-02-02 15:26:15 -08:00
parent ffcf58100e
commit 3873f72a58
1 changed files with 4 additions and 1 deletions
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5
compiler/bank.py
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@ -99,6 +99,8 @@ class bank(design.design):
self.add_precharge_array() self.add_precharge_array()
if self.col_addr_size > 0: if self.col_addr_size > 0:
# The m2 width is because the 6T cell may have vias on the boundary edge for
# overlapping when making the array
self.column_mux_height = self.column_mux_array.height + 0.5*self.m2_width self.column_mux_height = self.column_mux_array.height + 0.5*self.m2_width
self.add_column_mux_array() self.add_column_mux_array()
else: else:
@ -434,7 +436,8 @@ class bank(design.design):
# Place the col decoder just to the left of the control bus # Place the col decoder just to the left of the control bus
x_off = self.m2_pitch + self.overall_central_bus_width + self.col_decoder.width gap = max(drc["pwell_to_nwell"], 2*self.m2_pitch)
x_off = gap + self.overall_central_bus_width + self.col_decoder.width
# Place the col decoder below the the address flops which are below the row decoder (lave some space for wells) # Place the col decoder below the the address flops which are below the row decoder (lave some space for wells)
vertical_gap = max(drc["pwell_to_nwell"], 2*self.m2_pitch) vertical_gap = max(drc["pwell_to_nwell"], 2*self.m2_pitch)
y_off = self.decoder.predecoder_height + self.msf_address.width + self.col_decoder.height + 2*vertical_gap y_off = self.decoder.predecoder_height + self.msf_address.width + self.col_decoder.height + 2*vertical_gap