drc_rules.drc

# =============================================================================
# drc_rules.drc
# SKY130 DRC rule deck for KLayout (alternate format)
# =============================================================================
#
# Usage:
#   klayout -b -r drc_rules.drc -rd input=layout.gds -rd output=results.xml
#
# This file checks the same 4 rules as drc_rules.lydrc using a slightly
# different syntax style. Either file can be used with run_drc.py.
# =============================================================================

# --- Load input layout and open report database ---
source($input)
report("SKY130 Mini DRC Report", $output)

# --- SKY130 layer definitions ------------------------------------------------
li1   = input(67, 20)   # local interconnect
nwell = input(64, 20)   # nwell
nsdm  = input(93, 44)   # n+ source/drain implant
mcon  = input(67, 44)   # metal contact

# --- Rule 1: li1 minimum width = 0.17 um ------------------------------------
li1.width(0.17.um).output(
  "LI.W.1",
  "li1 minimum width violation: width < 0.17 um"
)

# --- Rule 2: li1 minimum spacing = 0.17 um ----------------------------------
li1.space(0.17.um).output(
  "LI.S.1",
  "li1 minimum spacing violation: spacing < 0.17 um"
)

# --- Rule 3: nwell must enclose nsdm by 0.125 um ----------------------------
nsdm.enclosed(nwell, 0.125.um).output(
  "NW.ENC.1",
  "nwell enclosure violation: nwell enclosure of nsdm < 0.125 um"
)

# --- Rule 4: mcon minimum area = 0.2025 um^2 --------------------------------
mcon.with_area(0.0.um2, 0.2025.um2).output(
  "MCON.A.1",
  "mcon minimum area violation: area < 0.2025 um^2"
)