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redraw inv, add schematic, lvs

Browse source 
* update environment for xschem + netgen
* typos
* add lvs for inv using netgen
This commit is contained in:
Pierre Guillod 2023-04-15 18:24:34 +02:00
parent cc77997348
commit 489e257c37
Signed by: pierre
GPG key ID: B00B454469924EDF
15 changed files with 872 additions and 169 deletions
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0
fullcustom/cad/gds/.gitkeep → fullcustom/cad/inv/gds/.gitkeep
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46
fullcustom/cad/inv/mag/inv.mag Normal file
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@ -0,0 +1,46 @@
magic
tech sky130A
magscale 1 2
timestamp 1681569004
<< poly >>
rect 143 479 173 639
rect 87 474 173 479
rect 75 468 173 474
rect 75 434 100 468
rect 135 434 173 468
rect 75 428 173 434
rect 87 423 173 428
rect 143 263 173 423
<< polycont >>
rect 100 434 135 468
<< locali >>
rect 75 434 100 468
rect 135 434 151 468
<< viali >>
rect 100 434 135 468
<< metal1 >>
rect 91 670 137 838
rect 75 468 151 474
rect 75 434 100 468
rect 135 434 151 468
rect 75 428 151 434
rect 179 241 225 670
rect 91 157 137 241
use sky130_fd_pr__nfet_01v8_EDB9KC sky130_fd_pr__nfet_01v8_EDB9KC_0
timestamp 1681568278
transform 1 0 158 0 1 199
box -211 -252 211 252
use sky130_fd_pr__pfet_01v8_MQX2PY sky130_fd_pr__pfet_01v8_MQX2PY_0
timestamp 1681569004
transform 1 0 158 0 1 754
box -211 -303 211 303
<< labels >>
flabel metal1 91 670 137 838 0 FreeSans 160 90 0 0 VDD
port 1 nsew
flabel metal1 91 157 137 241 0 FreeSans 160 90 0 0 VSS
port 2 nsew
flabel metal1 75 428 151 474 0 FreeSans 160 0 0 0 A
port 3 nsew
flabel metal1 179 241 225 670 0 FreeSans 160 0 0 0 X
port 4 nsew
<< end >>

29
fullcustom/cad/mag/sky130_fd_pr__nfet_01v8_EDB9KC.mag → fullcustom/cad/inv/mag/sky130_fd_pr__nfet_01v8_EDB9KC.mag
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@ -1,11 +1,9 @@
magic
tech sky130A
magscale 1 2
timestamp 1681237416
timestamp 1681568278
<< error_p >>
rect -29 114 29 120
rect -29 80 -17 114
rect -29 74 29 80
rect -15 64 15 68
<< pwell >>
rect -211 -252 211 252
<< nmos >>
@ -23,7 +21,8 @@ rect 15 -42 73 -30
rect -61 -30 -27 30
rect 27 -30 61 30
<< psubdiff >>
rect -175 182 175 216
rect -175 182 -117 216
rect 79 182 175 216
rect -175 120 -141 182
rect 141 120 175 182
rect -175 -182 -141 -120
@ -35,37 +34,25 @@ rect -175 -120 -141 120
rect 141 -120 175 120
rect -79 -216 79 -182
<< poly >>
rect -33 114 33 130
rect -33 80 -17 114
rect 17 80 33 114
rect -33 64 33 80
rect -15 42 15 64
rect -15 -68 15 -42
<< polycont >>
rect -17 80 17 114
<< locali >>
rect -175 182 175 216
rect -175 182 -117 216
rect 79 182 175 216
rect -175 120 -141 182
rect 141 120 175 182
rect -33 80 -17 114
rect 17 80 33 114
rect -175 -182 -141 -120
rect -61 30 -27 46
rect -61 -46 -27 -30
rect -61 -182 -27 -30
rect 27 30 61 46
rect 27 -46 61 -30
rect -175 -182 -141 -120
rect 141 -182 175 -120
rect -175 -216 -79 -182
rect 79 -216 175 -182
<< viali >>
rect -17 80 17 114
rect -61 -30 -27 30
rect 27 -30 61 30
<< metal1 >>
rect -29 114 29 120
rect -29 80 -17 114
rect 17 80 29 114
rect -29 74 29 80
rect -67 30 -21 42
rect -67 -30 -61 30
rect -27 -30 -21 30

68
fullcustom/cad/inv/mag/sky130_fd_pr__pfet_01v8_MQX2PY.mag Normal file
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@ -0,0 +1,68 @@
magic
tech sky130A
magscale 1 2
timestamp 1681569004
<< nwell >>
rect -211 -303 211 303
<< pmos >>
rect -15 -84 15 84
<< pdiff >>
rect -73 72 -15 84
rect -73 -72 -61 72
rect -27 -72 -15 72
rect -73 -84 -15 -72
rect 15 72 73 84
rect 15 -72 27 72
rect 61 -72 73 72
rect 15 -84 73 -72
<< pdiffc >>
rect -61 -72 -27 72
rect 27 -72 61 72
<< nsubdiff >>
rect -175 233 -79 267
rect 79 233 175 267
rect -175 171 -141 233
rect 141 171 175 233
rect -175 -233 -141 -171
rect 141 -233 175 -171
rect -175 -267 -117 -233
rect 79 -267 175 -233
<< nsubdiffcont >>
rect -79 233 79 267
rect -175 -171 -141 171
rect 141 -171 175 171
<< poly >>
rect -15 84 15 115
rect -15 -115 15 -84
<< locali >>
rect -175 233 -79 267
rect 79 233 175 267
rect -175 171 -141 233
rect -67 84 -21 233
rect 141 171 175 233
rect -61 72 -27 84
rect -61 -88 -27 -72
rect 27 72 61 88
rect 27 -88 61 -72
rect -175 -233 -141 -171
rect 141 -233 175 -171
rect -175 -267 -117 -233
rect 79 -267 175 -233
<< viali >>
rect -61 -72 -27 72
rect 27 -72 61 72
<< metal1 >>
rect -67 72 -21 84
rect -67 -72 -61 72
rect -27 -72 -21 72
rect -67 -84 -21 -72
rect 21 72 67 84
rect 21 -72 27 72
rect 61 -72 67 72
rect 21 -84 67 -72
<< properties >>
string FIXED_BBOX -158 -250 158 250
string gencell sky130_fd_pr__pfet_01v8
string library sky130
string parameters w 0.84 l 0.15 m 1 nf 1 diffcov 100 polycov 100 guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.15 wmin 0.42 compatible {sky130_fd_pr__pfet_01v8 sky130_fd_pr__pfet_01v8_lvt sky130_fd_pr__pfet_01v8_hvt sky130_fd_pr__pfet_g5v0d10v5} full_metal 1 viasrc 100 viadrn 100 viagate 100 viagb 0 viagr 0 viagl 0 viagt 0
<< end >>

59
fullcustom/cad/inv/sch/inv.sch Normal file
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@ -0,0 +1,59 @@
v {xschem version=3.1.0 file_version=1.2
* Copyright 2021 Stefan Frederik Schippers
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
}
G {}
K {}
V {}
S {}
E {}
N 1990 -1040 1990 -980 {
lab=X}
N 1990 -950 2000 -950 {
lab=VSS}
N 2000 -950 2000 -920 {
lab=VSS}
N 1990 -920 2000 -920 {
lab=VSS}
N 1990 -1070 2000 -1070 {
lab=VDD}
N 2000 -1100 2000 -1070 {
lab=VDD}
N 1990 -1100 2000 -1100 {
lab=VDD}
N 1950 -1070 1950 -950 {
lab=A}
N 1990 -1130 1990 -1100 {
lab=VDD}
N 1990 -920 1990 -890 {
lab=VSS}
C {sky130_fd_pr/nfet_01v8.sym} 1970 -950 0 0 {name=n0
L=0.15
W=0.42
nf=1 mult=1
model=nfet_01v8
spiceprefix=X
}
C {sky130_fd_pr/pfet_01v8.sym} 1970 -1070 0 0 {name=p0
L=0.15
W=0.84
nf=1 mult=1
model=pfet_01v8
spiceprefix=X
}
C {devices/ipin.sym} 1950 -1010 0 0 {name=p1 lab=A}
C {devices/iopin.sym} 1990 -1130 0 0 {name=p2 lab=VDD}
C {devices/opin.sym} 1990 -1010 0 0 {name=p3 lab=X}
C {devices/iopin.sym} 1990 -890 0 0 {name=p9 lab=VSS}

0
fullcustom/cad/spice/.gitkeep → fullcustom/cad/inv/spice/.gitkeep
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0
fullcustom/cad/svg/.gitkeep → fullcustom/cad/inv/svg/.gitkeep
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27
fullcustom/cad/mag/inverter.mag
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@ -1,27 +0,0 @@
magic
tech sky130A
magscale 1 2
timestamp 1681238406
<< metal1 >>
rect 12 149 74 330
rect 112 -202 170 62
rect 12 -461 74 -280
rect 208 -364 271 233
use sky130_fd_pr__nfet_01v8_EDB9KC *sky130_fd_pr__nfet_01v8_EDB9KC_0
timestamp 1681237416
transform 1 0 141 0 1 -322
box -211 -252 211 252
use sky130_fd_pr__pfet_01v8_M479BZ sky130_fd_pr__pfet_01v8_M479BZ_0
timestamp 1681237537
transform 1 0 141 0 1 191
box -211 -261 211 261
<< labels >>
flabel metal1 12 149 74 330 0 FreeMono 160 90 0 0 VDD
port 1 nsew
flabel metal1 12 -461 74 -280 0 FreeMono 160 90 0 0 VSS
port 2 nsew
flabel metal1 112 -140 170 -34 0 FreeMono 160 0 0 0 I
port 3 nsew
flabel metal1 208 -140 271 -34 0 FreeMono 160 0 0 0 O
port 4 nsew
<< end >>

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fullcustom/cad/mag/sky130_fd_pr__pfet_01v8_M479BZ.mag
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@ -1,82 +0,0 @@
magic
tech sky130A
magscale 1 2
timestamp 1681237537
<< error_p >>
rect -29 -89 29 -83
rect -29 -123 -17 -89
rect -29 -129 29 -123
<< nwell >>
rect -211 -261 211 261
<< pmos >>
rect -15 -42 15 42
<< pdiff >>
rect -73 30 -15 42
rect -73 -30 -61 30
rect -27 -30 -15 30
rect -73 -42 -15 -30
rect 15 30 73 42
rect 15 -30 27 30
rect 61 -30 73 30
rect 15 -42 73 -30
<< pdiffc >>
rect -61 -30 -27 30
rect 27 -30 61 30
<< nsubdiff >>
rect -175 191 -79 225
rect 79 191 175 225
rect -175 129 -141 191
rect 141 129 175 191
rect -175 -191 -141 -129
rect 141 -191 175 -129
rect -175 -225 175 -191
<< nsubdiffcont >>
rect -79 191 79 225
rect -175 -129 -141 129
rect 141 -129 175 129
<< poly >>
rect -15 42 15 73
rect -15 -73 15 -42
rect -33 -89 33 -73
rect -33 -123 -17 -89
rect 17 -123 33 -89
rect -33 -139 33 -123
<< polycont >>
rect -17 -123 17 -89
<< locali >>
rect -175 191 -79 225
rect 79 191 175 225
rect -175 129 -141 191
rect 141 129 175 191
rect -61 30 -27 46
rect -61 -46 -27 -30
rect 27 30 61 46
rect 27 -46 61 -30
rect -33 -123 -17 -89
rect 17 -123 33 -89
rect -175 -191 -141 -129
rect 141 -191 175 -129
rect -175 -225 175 -191
<< viali >>
rect -61 -30 -27 30
rect 27 -30 61 30
rect -17 -123 17 -89
<< metal1 >>
rect -67 30 -21 42
rect -67 -30 -61 30
rect -27 -30 -21 30
rect -67 -42 -21 -30
rect 21 30 67 42
rect 21 -30 27 30
rect 61 -30 67 30
rect 21 -42 67 -30
rect -29 -89 29 -83
rect -29 -123 -17 -89
rect 17 -123 29 -89
rect -29 -129 29 -123
<< properties >>
string FIXED_BBOX -158 -208 158 208
string gencell sky130_fd_pr__pfet_01v8
string library sky130
string parameters w 0.42 l 0.15 m 1 nf 1 diffcov 100 polycov 100 guard 1 glc 1 grc 1 gtc 1 gbc 1 tbcov 100 rlcov 100 topc 1 botc 1 poverlap 0 doverlap 1 lmin 0.15 wmin 0.42 compatible {sky130_fd_pr__pfet_01v8 sky130_fd_pr__pfet_01v8_lvt sky130_fd_pr__pfet_01v8_hvt sky130_fd_pr__pfet_g5v0d10v5} full_metal 1 viasrc 100 viadrn 100 viagate 100 viagb 0 viagr 0 viagl 0 viagt 0
<< end >>

6
fullcustom/environment.yml
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@ -95,6 +95,7 @@ dependencies:
- nbformat=5.8.0=pyhd8ed1ab_0
- ncurses=6.3=h27087fc_1
- nest-asyncio=1.5.6=pyhd8ed1ab_0
- netgen=1.5.251_0_gd111fa0=20230412_103222
- ngspice-lib=38=h7017330_0
- notebook=6.5.4=pyha770c72_0
- notebook-shim=0.2.2=pyhd8ed1ab_0
@ -160,6 +161,7 @@ dependencies:
- xorg-renderproto=0.11.1=h7f98852_1002
- xorg-xextproto=7.3.0=h0b41bf4_1003
- xorg-xproto=7.0.31=h7f98852_1007
- xschem=3.1.0_525_gc71c15e9=20230412_103222
- xz=5.2.6=h166bdaf_0
- yaml=0.2.5=h7f98852_2
- zeromq=4.3.4=h9c3ff4c_1
@ -169,3 +171,7 @@ dependencies:
- pip:
- dataclasses-json==0.5.6
- gdstk==0.9.37
- marshmallow==3.19.0
- marshmallow-enum==1.5.1
- mypy-extensions==1.0.0
- typing-inspect==0.8.0

166
fullcustom/fullcustom-transistor.ipynb
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@ -8,7 +8,9 @@
"source": [
"# Fullcustom analog design demo using Magic\n",
"\n",
"The environment path must be retrieved in order to provide _Magic_ with the technology files:"
"The environment path must be retrieved in order to provide _Magic_ with the technology files.\n",
"\n",
"**Please check them. If they are wrong, you can hardcode the correct ones. If you don't know, let it as it is and check for strange behaviours afterwards 😉**"
]
},
{
@ -20,7 +22,14 @@
"outputs": [],
"source": [
"import os\n",
"CONDA_PREFIX = os.environ['CONDA_PREFIX']"
"from pathlib import Path\n",
"CONDA_DIR = os.environ['CONDA_PREFIX']\n",
"HOME_DIR = Path.home()\n",
"FULLCUSTOM_DIR = os.path.abspath(\"\")\n",
"\n",
"print(f\"Anaconda environment absolute path = '{CONDA_DIR}'\")\n",
"print(f\"Home directory absolute path = '{HOME_DIR}'\")\n",
"print(f\"Fullcustom absolute path = '{FULLCUSTOM_DIR}'\")"
]
},
{
@ -49,18 +58,18 @@
},
"outputs": [],
"source": [
"%%script magic -dnull -noconsole -rcfile {CONDA_PREFIX}/share/pdk/sky130A/libs.tech/magic/sky130A.magicrc\n",
"%%script magic -dnull -noconsole -rcfile {CONDA_DIR}/share/pdk/sky130A/libs.tech/magic/sky130A.magicrc\n",
"\n",
"load cad/mag/inverter.mag\n",
"load cad/inv/mag/inv.mag\n",
"\n",
"extract\n",
"extract all\n",
"ext2spice lvs\n",
"ext2spice cthresh 0\n",
"ext2spice rthresh 0\n",
"ext2spice -o cad/spice/inverter.spice\n",
"#ext2spice cthresh 0\n",
"#ext2spice rthresh 0\n",
"ext2spice -o cad/inv/spice/inv.spice\n",
"\n",
"gds labels no\n",
"gds write cad/gds/inverter.gds"
"gds write cad/inv/gds/inv.gds"
]
},
{
@ -88,10 +97,10 @@
"import gdstk\n",
"import IPython.display\n",
"\n",
"library = gdstk.read_gds('cad/gds/inverter.gds')\n",
"library = gdstk.read_gds('cad/inv/gds/inv.gds')\n",
"top_cells = library.top_level()\n",
"top_cells[0].write_svg('cad/svg/inverter.svg', scaling=100)\n",
"IPython.display.SVG('cad/svg/inverter.svg')"
"top_cells[0].write_svg('cad/inv/svg/inv.svg', scaling=100)\n",
"IPython.display.SVG('cad/inv/svg/inv.svg')"
]
},
{
@ -102,7 +111,7 @@
"\n",
"### Using _SPICE_ simulation engine\n",
"\n",
"[_PySPICE_](https://pyspice.fabrice-salvaire.fr/releases/v1.4/overview.html) is a _Python_ implementation of several _SPICE_ simulation engines. The _SPICE_ engines are used to simulate analog circuits. A top-level test bench circuit must be built:"
"[_PySPICE_](https://pyspice.fabrice-salvaire.fr/releases/v1.4/overview.html) is a _Python_ interface for several _SPICE_ simulation engines. The _SPICE_ engines are used to simulate analog circuits. A top-level test bench circuit must be built:"
]
},
{
@ -122,28 +131,28 @@
"from PySpice.Unit import *\n",
"\n",
"# Declare the top-level circuit\n",
"circuit = Circuit('Inverter')\n",
"circuit = Circuit('INV')\n",
"# Link to technology libraries\n",
"circuit.lib(f'{CONDA_PREFIX}/share/pdk/sky130A/libs.tech/ngspice/sky130.lib.spice', 'tt')\n",
"circuit.lib(f'{CONDA_DIR}/share/pdk/sky130A/libs.tech/ngspice/sky130.lib.spice', 'tt')\n",
"\n",
"# Import and instantiate the CUT (Circuit Under Test)\n",
"circuit.include('cad/spice/inverter.spice')\n",
"circuit.X('Inverter', 'inverter', 'VDD','VSS','I','O');\n",
"circuit.include('cad/inv/spice/inv.spice')\n",
"circuit.X('INV', 'inv', 'VDD','VSS','A','X');\n",
"circuit.C('','X','VSS','10f')\n",
"\n",
"# Add voltage sources\n",
"circuit.V('VSS', 'VSS', 0, 0)\n",
"circuit.V('VDD', 'VDD', 'VSS', 1.8)\n",
"# Add pulse source\n",
"circuit.PulseVoltageSource(\n",
" 'I', 'I', 'VSS',\n",
" initial_value=0@u_V, pulsed_value=1.8@u_V,\n",
" rise_time=10@u_ps, fall_time=10@u_ps,\n",
" pulse_width=40@u_ps, period=160@u_ps, delay_time=10@u_ps\n",
")\n",
"circuit.V('V_SS', 'VSS', 0, 0)\n",
"circuit.V('V_DD', 'VDD', 'VSS', 1.8)\n",
"\n",
"# Add pulse sources\n",
"circuit.PulseVoltageSource('A', 'A', 0,\n",
" initial_value=0@u_V, pulsed_value=1.8@u_V,\n",
" rise_time=10@u_ps, fall_time=10@u_ps,\n",
" pulse_width=0.35@u_ns, period=0.8@u_ns, delay_time=0.2@u_ns)\n",
"\n",
"# Create the simulation and simulate\n",
"simulator = circuit.simulator()\n",
"analysis = simulator.transient(step_time=1@u_ps, end_time=160@u_ps)"
"analysis = simulator.transient(step_time=10@u_ps, end_time=1@u_ns)"
]
},
{
@ -170,14 +179,14 @@
"ax.grid(visible=True, which='minor', axis='both', linestyle=\"--\");\n",
"ax.set_yticks(np.linspace(-1.0,2.5,8,endpoint=True));\n",
"ax.set_yticks(np.linspace(-1.0,2.5,36,endpoint=True),minor=True);\n",
"ax.set_xticks(np.linspace(0e-12,160e-12,9,endpoint=True));\n",
"ax.set_xticks(np.linspace(0e-12,160e-12,17,endpoint=True),minor=True);\n",
"ax.set_title('Inverter - Transient Simulation')\n",
"ax.set_xticks(np.linspace(0e-12,1e-9,11,endpoint=True));\n",
"ax.set_xticks(np.linspace(0e-12,1e-9,21,endpoint=True),minor=True);\n",
"ax.set_title('INV Gate - Transient Simulation')\n",
"ax.set_xlabel('Time [s]')\n",
"ax.set_ylabel('Signal [V]')\n",
"ax.plot(analysis.time,analysis.I)\n",
"ax.plot(analysis.time,analysis.O)\n",
"ax.legend(('Input (I)', 'Output (O)'))\n",
"ax.plot(analysis.time,analysis.A)\n",
"ax.plot(analysis.time,analysis.X)\n",
"ax.legend(('Input (A)', 'Output (X)'))\n",
"plt.tight_layout()\n",
"plt.show()"
]
@ -186,6 +195,8 @@
"cell_type": "markdown",
"metadata": {},
"source": [
"# To have fun going further...\n",
"\n",
"## Graphical editor\n",
"\n",
"_Magic_ can be started specifying only one file (`.magicrc`) that sets everything up (layers, macros, DRC rules, etc.)! Both a console and a GUI are started. Some functions are only accessible using the command-line interface or using keybindings."
@ -197,24 +208,103 @@
"metadata": {},
"outputs": [],
"source": [
"!magic -rcfile {CONDA_PREFIX}/share/pdk/sky130A/libs.tech/magic/sky130A.magicrc"
"!magic -rcfile {CONDA_DIR}/share/pdk/sky130A/libs.tech/magic/sky130A.magicrc"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# To have fun going further...\n",
"## Schematic editor\n",
"\n",
"Of course, the workflow would not be complete without a schematic editor... and an LVS tool. For instance, one can use _Xscheme_:"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"!export PDK_ROOT={CONDA_DIR}/share/pdk/; \\\n",
"xschem --rcfile {CONDA_DIR}/share/pdk/sky130A/libs.tech/xschem/xschemrc"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"The inverter schematic is available under:\n",
" \n",
"```\n",
"fullcustom/cad/inv/sch/inv.sch\n",
"```\n",
"\n",
"Open it with _xschem_ and generate the netlist by:\n",
"\n",
" * Selecting _Spice netlist_ in the _Options_ toolbar menu. (This will produce a netlist in a format accepted by the _LVS_ tool.)\n",
" * Selecting _LVS netlist: Top level is a .subckt_ in the _Simulation_ toolbar menu. (This will encapsulate the circuit in a subcircuit. The _LVS_ tool fails otherwose.)\n",
" \n",
"Click on _Netlist_ (top right) to generate the netlist. It is generated by default under the user repository:\n",
"\n",
"```\n",
"~/.xschem/simulations/<circuit>.spice\n",
"```\n",
"\n",
"This location is assumed in the following cells."
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Layout Versus Schematic\n",
"\n",
"The layout netlists takes into account the parasitics. They are modeled as lumped resistances and capacitances but they are reported on the schematic. They must be therefore removed from the schematic's netlist. Comment out the two following lines of the corresponding cell above:\n",
"\n",
"```diff\n",
"- ext2spice cthresh 0\n",
"- ext2spice rthresh 0\n",
"+ #ext2spice cthresh 0\n",
"+ #ext2spice rthresh 0\n",
"```\n",
"\n",
"Now that both the schematic's and the layout's netlists are written, they can be compare by _netgen_, the LVS tool:"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"!netgen lvs \\\n",
"\"{FULLCUSTOM_DIR}/cad/inv/spice/inv.spice inv\" \\\n",
"\"{HOME_DIR}/.xschem/simulations/inv.spice inv\" \\\n",
"\"{CONDA_DIR}/share/pdk/sky130A/libs.tech/netgen/setup.tcl\""
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Some ideas...\n",
"\n",
"Here are a couple ideas to spend a good time exploring those beautiful pieces of software:\n",
"\n",
" * Characterize an NMOS device or a PMOS device by applying voltage pulses on the different pads.\n",
" * Start _Magic_ on another PDK and design another inverter.\n",
" * Vary the devices' geometry; try to make the pull-up and the pull-down waveforms symmetrical.\n",
" * Start _Magic_ on another PDK and design an inverter.\n",
" * Vary the devices' geometry and compare the pull-down and pull-up curves.\n",
" * Copy this notebook to explore the NAND gate cell available in the repository.\n",
" \n",
" **Do not hesitate to open the `.mag` files to see how they are built and to adapt from them!**\n",
" \n",
" > Good luck and read the docs. 😉"
" > Good luck and read the docs. 😉\n",
" \n",
"## More food for the brain\n",
"\n",
" * http://opencircuitdesign.com/\n",
" * https://skywater-pdk.readthedocs.io"
]
},
{

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<text stroke="none" font-family="Times" font-size="40"><tspan x="-166" y="14">0.9361<tspan dx="7"/></tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="-43" y="14">µm</tspan></text>
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<path d="M147,1251 L147,1211 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
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<text stroke="none" font-family="Times" font-size="40"><tspan x="-83" y="0">1.3761</tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="25" y="0"><tspan dx="7">µm</tspan></tspan></text>
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<path d="M131,1115 L131,1067 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
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<text stroke="none" font-family="Times" font-size="40"><tspan x="-83" y="0">2.0061</tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="45" y="0"><tspan dx="7">µm</tspan></tspan></text>
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<path d="M355,923 L107,923 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#999999"/>
<path d="M115,971 L115,923 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
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<g transform="matrix( 0.7 0 -0 0.7 171 1003)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-83" y="0">2.7861<tspan dx="7"/></tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="46" y="0">µm</tspan></text>
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<path d="M355,715 L91,715 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#999999"/>
<path d="M99,779 L99,715 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M107,743 C102,733 102,730 99,715 C96,730 96,733 91,743 C97,741 101,741 107,743 " fill="#000000" stroke="none"/>
<g transform="matrix( 0.7 0 -0 0.7 155 811)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-83" y="0">4.0211<tspan dx="7"/></tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="40" y="0">µm</tspan></text>
</text></g>
<path d="M299,491 L75,491 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#999999"/>
<path d="M83,571 L83,491 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M91,519 C86,509 86,506 83,491 C80,506 80,509 75,519 C81,517 85,517 91,519 " fill="#000000" stroke="none"/>
<g transform="matrix( 0.7 0 -0 0.7 139 603)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-83" y="0">5.3711<tspan dx="7"/></tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="30" y="0">µm</tspan></text>
</text></g>
<path d="M211,107 L35,107 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#cccccc"/>
<path d="M67,219 L67,107 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M75,135 C70,125 70,122 67,107 C64,122 64,125 59,135 C65,133 69,133 75,135 " fill="#000000" stroke="none"/>
<g transform="matrix( 0.7 0 -0 0.7 107 251)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-93" y="0">11.8834<tspan dx="7"/></tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="46" y="0">µm</tspan></text>
</text></g>
<path d="M403,1435 L675,1435 " fill="none" style="stroke-dasharray:4,4" stroke-width="2" stroke-linecap="butt" stroke-linejoin="bevel" stroke="#999999"/>
<g transform="matrix( 0.7 0 -0 0.7 587 1467)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-191" y="0">FOX K=3.9</tspan>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 1571 1563)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="0" y="0">p-substrate</tspan>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 523 1379)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-185" y="14">PSG K=3.9</tspan>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 1531 1275)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-202" y="14">LINT K=7.3</tspan>
</text></g>
<path d="M643,1323 L363,1323 " fill="none" style="stroke-dasharray:4,4" stroke-width="2" stroke-linecap="butt" stroke-linejoin="bevel" stroke="#999999"/>
<g transform="matrix( 0.7 0 -0 0.7 547 1251)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-246" y="14">NILD2 K=4.05</tspan>
</text></g>
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<path d="M371,1067 L643,1067 " fill="none" style="stroke-dasharray:4,4" stroke-width="2" stroke-linecap="butt" stroke-linejoin="bevel" stroke="#999999"/>
<path d="M371,923 L643,923 " fill="none" style="stroke-dasharray:4,4" stroke-width="2" stroke-linecap="butt" stroke-linejoin="bevel" stroke="#999999"/>
<path d="M371,715 L643,715 " fill="none" style="stroke-dasharray:4,4" stroke-width="2" stroke-linecap="butt" stroke-linejoin="bevel" stroke="#999999"/>
<path d="M315,491 L635,491 " fill="none" style="stroke-dasharray:4,4" stroke-width="2" stroke-linecap="butt" stroke-linejoin="bevel" stroke="#999999"/>
<g transform="matrix( 0.7 0 -0 0.7 1563 1115)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-273" y="0">NILD3_C K=3.5</tspan>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 547 1011)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-226" y="0">NILD4 K=4.2</tspan>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 547 835)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-226" y="0">NILD5 K=4.1</tspan>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 547 627)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-226" y="0">NILD6 K=4.0</tspan>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 547 1155)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-226" y="0">NILD3 K=4.5</tspan>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 1563 971)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-273" y="0">NILD4_C K=3.5</tspan>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 1427 251)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-244" y="0">TOPOX K=3.9</tspan>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 35 1483)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-50" y="14">0.0</tspan>
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<path d="M691,1259 L691,1307 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M699,1287 C694,1277 694,1274 691,1259 C688,1274 688,1277 683,1287 C689,1285 693,1285 699,1287 " fill="#000000" stroke="none"/>
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<path d="M675,1067 L675,1131 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
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<path d="M675,923 L675,987 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
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<path d="M675,491 L675,571 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M939,135 C934,125 934,122 931,107 C928,122 928,125 923,135 C929,133 933,133 939,135 " fill="#000000" stroke="none"/>
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<path d="M931,107 L931,283 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M739,107 L963,107 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#999999"/>
<g transform="matrix( 0.7 0 -0 0.7 651 1235)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="0" y="14">0.265</tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="108" y="14"><tspan dx="7">µm</tspan></tspan></text>
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<path d="M755,1371 L755,1323 851,1323 851,1371 z" fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<g transform="matrix( 0.7 0 -0 0.7 691 1099)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="0" y="14">0.27</tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="84" y="14"><tspan dx="7">µm</tspan></tspan></text>
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<g transform="matrix( 0.7 0 -0 0.7 691 955)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="0" y="14">0.42</tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="84" y="14"><tspan dx="7">µm</tspan></tspan></text>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 691 747)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="0" y="14">0.39</tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="76" y="14"><tspan dx="7">µm</tspan></tspan></text>
</text></g>
<g transform="matrix( 0.7 0 -0 0.7 691 531)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="0" y="14">0.505</tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="106" y="14"><tspan dx="7">µm</tspan></tspan></text>
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</text></g>
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<text stroke="none" font-family="Times" font-size="40"><tspan x="-182" y="14">IOX K=3.9</tspan>
</text></g>
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<text stroke="none" font-family="Times" font-size="40"><tspan x="-222" y="14">SPNIT K=7.5</tspan>
</text></g>
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<path d="M1459,1467 L1491,1467 1491,1371 1187,1371 1187,1467 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M1587,1211 L1587,1131 1619,1131 1619,1211 z" fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M1587,1067 L1587,987 1619,987 1619,1067 z" fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M883,1435 L883,1371 899,1371 899,1435 z" fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M899,1435 L931,1435 931,1339 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M723,1435 L707,1435 707,1371 723,1371 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M707,1435 L675,1435 675,1339 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M675,1339 L755,1339 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M931,1339 L851,1339 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M1187,1467 L1219,1467 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M1219,1467 L1219,1403 1235,1403 1235,1467 z" fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M1507,1371 L1635,1371 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#999999"/>
<g transform="matrix( 0.7 0 -0 0.7 1523 1387)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="0" y="14">0.121<tspan dx="7"/></tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="101" y="14">µm</tspan></text>
</text></g>
<path d="M1571,955 L1587,955 1603,1003 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#999999"/>
<path d="M1571,1107 L1587,1107 1603,1155 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#999999"/>
<path d="M1451,1411 L1435,1347 1403,1347 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#999999"/>
<path d="M1547,1431 C1542,1421 1542,1418 1539,1403 C1536,1418 1536,1421 1531,1431 C1537,1429 1541,1429 1547,1431 " fill="#000000" stroke="none"/>
<path d="M1539,1403 L1539,1443 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M1547,1343 C1542,1353 1542,1356 1539,1371 C1536,1356 1536,1353 1531,1343 C1537,1345 1541,1345 1547,1343 " fill="#000000" stroke="none"/>
<path d="M1539,1371 L1539,1331 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M931,1435 L1075,1435 " fill="none" style="stroke-dasharray:4,4" stroke-width="2" stroke-linecap="butt" stroke-linejoin="bevel" stroke="#999999"/>
<g transform="matrix( 0.7 0 -0 0.7 1059 1387)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-166" y="14">0.6099<tspan dx="7"/></tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="-33" y="14">µm</tspan></text>
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<path d="M995,1371 L995,1323 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M995,1403 L995,1435 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M1003,1407 C998,1417 998,1420 995,1435 C992,1420 992,1417 987,1407 C993,1409 997,1409 1003,1407 " fill="#000000" stroke="none"/>
<path d="M1003,1351 C998,1341 998,1338 995,1323 C992,1338 992,1341 987,1351 C993,1349 997,1349 1003,1351 " fill="#000000" stroke="none"/>
<path d="M1587,1299 L1587,1259 1171,1259 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M979,1259 L915,1259 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#999999"/>
<path d="M955,1231 C950,1241 950,1244 947,1259 C944,1244 944,1241 939,1231 C945,1233 949,1233 955,1231 " fill="#000000" stroke="none"/>
<path d="M955,1319 C950,1309 950,1306 947,1291 C944,1306 944,1309 939,1319 C945,1317 949,1317 955,1319 " fill="#000000" stroke="none"/>
<path d="M947,1291 L947,1339 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M947,1259 L947,1219 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<g transform="matrix( 0.7 0 -0 0.7 947 1275)" fill="#000000">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-73" y="14">0.075</tspan><text stroke="none" font-family="Times" font-size="40"><tspan x="33" y="14"><tspan dx="7">µm</tspan></tspan></text>
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<path d="M1587,1299 L1619,1299 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M1619,1323 L1555,1323 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M579,1291 L611,1291 611,1259 1075,1259 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
<path d="M571,1291 L363,1291 " fill="none" style="stroke-dasharray:4,4" stroke-width="2" stroke-linecap="butt" stroke-linejoin="bevel" stroke="#999999"/>
<g transform="matrix( 0.7 0 -0 0.7 523 1307)" fill="#0000ff">
<text stroke="none" font-family="Times" font-size="40"><tspan x="-202" y="14">LINT K=7.3</tspan>
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<path d="M355,1291 L203,1291 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#999999"/>
<path d="M219,1339 L219,1291 " fill="none" stroke-width="2" stroke-linejoin="bevel" stroke-linecap="round" stroke="#000000"/>
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slides/index.html
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@ -96,9 +96,39 @@
<section data-markdown data-background='img/hype.jpg'>
## 🤩 Are you hyped enough? 🫨
* Semi-custom digital design
* Some technical bits
* Practical work (if ya fancy 😊)
</section>
</section>
<section data-background='img/back.svg'>
<section data-markdown>
# Some technical bits
* Meet the PDK
* Check out the workflows
</section>
<section>
<h2>Hello Sky130!</h2>
<img style="background-color:white;" src="img/sky130_stack.svg" height="500vh">
</section>
<section>
<h2>Semicustom workflow</h2>
<img style="background-color:white;" src="img/semicustom.svg" height="500vh">
</section>
<section>
<h2>Fullcustom workflow</h2>
<img style="background-color:white;" src="img/fullcustom.svg" height="500vh">
</section>
</section>
<section data-background='img/back.svg'>
<section data-markdown>