Coverage for tests/rcx25/rcx25_CC_ihp_sg13g2

2# --------------------------------------------------------------------------------

3# SPDX-FileCopyrightText: 2024-2026 Martin Jan Köhler and Harald Pretl

4# Johannes Kepler University, Institute for Integrated Circuits.

6# This file is part of KPEX

7# (see https://github.com/iic-jku/klayout-pex).

9# This program is free software: you can redistribute it and/or modify

10# it under the terms of the GNU General Public License as published by

11# the Free Software Foundation, either version 3 of the License, or

12# (at your option) any later version.

13#

14# This program is distributed in the hope that it will be useful,

15# but WITHOUT ANY WARRANTY; without even the implied warranty of

16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

17# GNU General Public License for more details.

18#

19# You should have received a copy of the GNU General Public License

20# along with this program. If not, see <http://www.gnu.org/licenses/>.

21# SPDX-License-Identifier: GPL-3.0-or-later

22# --------------------------------------------------------------------------------

23#

25import allure

26import csv

27import pytest

29from rcx25_test_helpers import *

31parent_suite = "kpex/2.5D Extraction Tests [PDK ihp-sg13g2 | mode CC]"

32tags = ("PEX", "2.5D")

35pex_whiteboxed = RCX25Extraction(pdk=PDKTestConfig(PDKName.IHP_SG13G2), pex_mode=PEXMode.CC, blackbox=False)

36pex_blackboxed = RCX25Extraction(pdk=PDKTestConfig(PDKName.IHP_SG13G2), pex_mode=PEXMode.CC, blackbox=True)

39@allure.parent_suite(parent_suite)

40@allure.tag(*tags)

41@pytest.mark.slow

42def test_mim_cap__whiteboxed():

43 # The device model gives cap_carea 1.5 fF/µm² * 6.99 µm * 6.99 µm = 73.29 fF

44 # plus CJSW 40 aF/µm * 27.96 µm = 1.12 fF, the fringe to the bottom plate (Metal5) around the top plate (MIM)

45 # NOTE: the plates' nets have no labels, so their names ($1, $2, ...) depend on the LVS run

46 _, csv_path, _ = pex_whiteboxed.run_rcx25d_single_cell('sg13g2_pr__cmim', 'cmim.gds.gz')

47 with open(csv_path) as f:

48 rows = list(csv.DictReader(f, delimiter=';'))

49 caps = [(('VSUBS' in (row['Net1'], row['Net2'])), float(row['Capacitance [fF]'])) for row in rows]

50 assert sorted(cap for to_substrate, cap in caps if not to_substrate) == [74.784] # between the plates

51 assert sorted(cap for to_substrate, cap in caps if to_substrate) == [0.878, 1.38] # top and bottom plate

54@allure.parent_suite(parent_suite)

55@allure.tag(*tags)

56@pytest.mark.slow

57def test_mom_cap__whiteboxed():

58 # The device model gives 0.915 fF/µm² (fingers on Metal2 … Metal4) * 10 µm * 25 µm = 228.75 fF

59 pex_whiteboxed.assert_expected_matches_obtained(

60 'test_patterns', 'cap_cmomf_w10u_l25u_m2_m4_m5_wire.gds.gz',

61 expected_csv_content="""Device;Net1;Net2;Capacitance [fF];Resistance [Ω]

62C1;MINUS;PLUS;205.148;

63C2;MINUS;VSUBS;6.757;

64C3;MINUS;X;1.805;

65C4;PLUS;VSUBS;6.829;

66C5;PLUS;X;1.911;

67C6;VSUBS;X;1.292;"""

68 )

71@allure.parent_suite(parent_suite)

72@allure.tag(*tags)

73@pytest.mark.slow

74def test_mom_cap__blackboxed():

75 # The fingers of the MOM cap are metal of its terminal nets, so --blackbox extracted their capacitance

76 # on top of the device, whose model has it: 205.148 fF more between PLUS and MINUS (#211 §9).

77 # The model has no substrate terminal, so the capacitances of the fingers to the substrate

78 # and to the wire X across are extracted, the same as in white-box mode

79 pex_blackboxed.assert_expected_matches_obtained(

80 'test_patterns', 'cap_cmomf_w10u_l25u_m2_m4_m5_wire.gds.gz',

81 expected_csv_content="""Device;Net1;Net2;Capacitance [fF];Resistance [Ω]

82C1;MINUS;VSUBS;6.757;

83C2;MINUS;X;1.805;

84C3;PLUS;VSUBS;6.829;

85C4;PLUS;X;1.911;

86C5;VSUBS;X;1.292;"""

87 )

90@allure.parent_suite(parent_suite)

91@allure.tag(*tags)

92@pytest.mark.slow

93def test_rf_mim_cap__blackboxed():

94 # The rfcmim of the PDK's cell library (sg13g2_pr), its model is cap_rfcmim, with the substrate as 3rd terminal

95 assert pex_blackboxed.written_device_lines('sg13g2_pr__rfcmim', 'rfcmim.gds.gz') == [

96 'X$1 \\$5 \\$4 sub! cap_rfcmim w=7e-06 l=7e-06 m=1 wfeed=3e-06',

97 ]

Coverage for tests/rcx25/rcx25_CC_ihp_sg13g2_test.py: 100%

33 statements