Second release of the ReRAM PDK.
This release includes the first version of the reram_cell and example
designs provided by Skywater. These are;
* `reram_cell` - ReRAM Cell with Verilog-AMS, GDS, LEF, SVG, SPICE
files.
* `reram_inst` - ReRAM Test Design with GDS, LEF, SVG, SPICE files.
* `reram_test_lvs_property`, `reram_test_lvs_terminals` - ReRAM LVS
Test with GDS, LEF, SVG, SPICE files.
* `reram_test_drc` - ReRAM DRC Violation Test with GDS, LEF, SVG, SPICE
files.
Signed-off-by: Ethan Mahintorabi <ethanmoon@google.com>
Signed-off-by: Tim 'mithro' Ansell <tansell@google.com>
Signed-off-by: Steve Kosier <Steve.Kosier@skywatertechnology.com>
diff --git a/cells/reram_cell/sky130_fd_pr_reram__reram_cell.gds b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.gds
new file mode 100644
index 0000000..361affc
--- /dev/null
+++ b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.gds
Binary files differ
diff --git a/cells/reram_cell/sky130_fd_pr_reram__reram_cell.gds.new b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.gds.new
new file mode 100644
index 0000000..937cd45
--- /dev/null
+++ b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.gds.new
Binary files differ
diff --git a/cells/reram_cell/sky130_fd_pr_reram__reram_cell.gds.pins.new b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.gds.pins.new
new file mode 100644
index 0000000..cefd897
--- /dev/null
+++ b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.gds.pins.new
@@ -0,0 +1,2 @@
+TE
+BE
diff --git a/cells/reram_cell/sky130_fd_pr_reram__reram_cell.magic.lef b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.magic.lef
new file mode 100644
index 0000000..8caa2be
--- /dev/null
+++ b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.magic.lef
@@ -0,0 +1,27 @@
+# Copyright 2020 The SkyWater PDK Authors
+#
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+VERSION 5.7 ;
+ NOWIREEXTENSIONATPIN ON ;
+ DIVIDERCHAR "/" ;
+ BUSBITCHARS "[]" ;
+MACRO sky130_fd_pr_reram__reram_cell
+ CLASS BLOCK ;
+ FOREIGN sky130_fd_pr_reram__reram_cell ;
+ ORIGIN 0.000000 0.000000 ;
+ SIZE 0.005000 BY 0.005000 ;
+END sky130_fd_pr_reram__reram_cell
+END LIBRARY
diff --git a/cells/reram_cell/sky130_fd_pr_reram__reram_cell.magic.lef.new b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.magic.lef.new
new file mode 100644
index 0000000..66c5b6d
--- /dev/null
+++ b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.magic.lef.new
@@ -0,0 +1,41 @@
+# Copyright 2020 The SkyWater PDK Authors
+#
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+VERSION 5.7 ;
+ NOWIREEXTENSIONATPIN ON ;
+ DIVIDERCHAR "/" ;
+ BUSBITCHARS "[]" ;
+MACRO sky130_fd_pr_reram__reram_cell
+ CLASS BLOCK ;
+ FOREIGN sky130_fd_pr_reram__reram_cell ;
+ ORIGIN 0.160000 0.160000 ;
+ SIZE 0.320000 BY 0.320000 ;
+ PIN BE
+ PORT
+ LAYER met2 ;
+ RECT -0.130000 -0.160000 0.130000 0.160000 ;
+ END
+ END BE
+ PIN TE
+ PORT
+ LAYER met1 ;
+ RECT -0.160000 -0.130000 0.160000 0.130000 ;
+ LAYER via ;
+ RECT -0.130000 -0.130000 0.130000 0.130000 ;
+ END
+ END TE
+END sky130_fd_pr_reram__reram_cell
+END LIBRARY
diff --git a/cells/reram_cell/sky130_fd_pr_reram__reram_cell.spice b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.spice
new file mode 100644
index 0000000..1c14ba0
--- /dev/null
+++ b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.spice
@@ -0,0 +1,19 @@
+* Copyright 2020 The SkyWater PDK Authors
+*
+* 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.
+*
+* SPDX-License-Identifier: Apache-2.0
+
+
+* Top level circuit sky130_fd_pr_reram__reram_cell
+.end
diff --git a/cells/reram_cell/sky130_fd_pr_reram__reram_cell.spice.new b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.spice.new
new file mode 100644
index 0000000..7732452
--- /dev/null
+++ b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.spice.new
@@ -0,0 +1,20 @@
+* Copyright 2020 The SkyWater PDK Authors
+*
+* 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.
+*
+* SPDX-License-Identifier: Apache-2.0
+
+
+.subckt sky130_fd_pr_reram__reram_cell BE TE
+R0 BE TE 0.000000
+.ends
diff --git a/cells/reram_cell/sky130_fd_pr_reram__reram_cell.svg b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.svg
new file mode 100644
index 0000000..3b59353
--- /dev/null
+++ b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.svg
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ id="svg10"
+ version="1.2"
+ viewBox="0 0 1898 1059"
+ height="1059pt"
+ width="1898pt">
+ <metadata
+ id="metadata14">
+ <rdf:RDF>
+ <cc:Work
+ rdf:about="">
+ <dc:format>image/svg+xml</dc:format>
+ <dc:type
+ rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+ </cc:Work>
+ </rdf:RDF>
+ </metadata>
+ <defs
+ id="defs5">
+ <clipPath
+ id="clip1">
+ <path
+ id="path2"
+ d="M 18.5 2.5 L 1898 2.5 L 1898 1059 L 18.5 1059 Z M 18.5 2.5 " />
+ </clipPath>
+ </defs>
+ <g
+ id="surface178">
+ <g
+ id="g7"
+ clip-rule="nonzero"
+ clip-path="url(#clip1)" />
+ </g>
+</svg>
diff --git a/cells/reram_cell/sky130_fd_pr_reram__reram_cell.va b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.va
new file mode 100644
index 0000000..978e0a8
--- /dev/null
+++ b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.va
@@ -0,0 +1,103 @@
+// Copyright 2020 The SkyWater PDK Authors
+//
+// 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.
+//
+// SPDX-License-Identifier: Apache-2.0
+
+`include "constants.vams"
+`include "disciplines.vams"
+
+module rram2(TE, BE);
+ inout TE; // top electrode
+ inout BE; // bottom electrode
+ electrical TE, BE;
+
+ // ==================================================
+ // input parameters
+ // --------------------------------------------------
+ // physical area and thickness
+ parameter real area_ox = 0.1024e-12 from (0:inf); // area of TE/BE overlap [meters^2]
+ parameter real Tox = 5.0e-9 from (0:inf); // thickness of oxide between TE and BE [meters]
+ parameter real Tfilament_max = 4.9e-9 from (0:inf); // maximum thickness of conductive filament (for minimum resistance) [meters]
+ parameter real Tfilament_min = 3.3e-9 from (0:inf); // minimum thickness of conductive filament (for maximum resistance) [meters]
+ parameter real Tfilament_0 = 3.3e-9 from [Tfilament_min:Tfilament_max]; // initial thickness of conductive filament (at t=0 for transient simulation) [meters]
+ // activation energy
+ parameter real Eact_generation = 1.501 from (0:inf); // activation energy for vacancy generation [eV]
+ parameter real Eact_recombination = 1.500 from (0:inf); // activation energy for vacancy recombination [eV]
+ // calibration parameters: I-V
+ parameter real I_k1 = 6.140e-5 from (0:inf); // current calibration parameter [Amps]
+ parameter real Tfilament_ref = 4.7249e-9 from (0:inf); // filament thickness calibration parameter [meters]
+ parameter real V_ref = 0.430 from (0:inf); // voltage calibration parameter [Volts]
+ // calibration parameters: filament growth
+ parameter real velocity_k1 = 150 from (0:inf); // velocity calibration parameter [meters/second]
+ parameter real gamma_k0 = 16.5 from (0:inf); // enhancement factor calibration parameter [unitless]
+ parameter real gamma_k1 = -1.25 from (-inf:inf); // enhancement factor calibration parameter [unitless]
+ // calibration parameters: temperature
+ parameter real Temperature_0 = 300 from (0:inf); // intial temperature [degrees Kelvin]
+ parameter real C_thermal = 3.1825e-16 from (0:inf); // effective thermal capacitance [Joules/Kelvin]
+ parameter real tau_thermal = 0.23e-9 from (0:inf); // effective thermal time constant [seconds]
+ // simulation control
+ parameter real t_step = 1.0e-9 from (0:inf); // maximum time step [seconds]
+ // ==================================================
+
+ // internal parameters
+ real a0 = 0.25e-9; // atomic distance [m]
+ real Tfilament_current; // current filament thickness [m]
+ real Tfilament_dTdt; // current filament thickness, derivative w.r.t. time [m/s]
+ real gamma; // local enhancement factor
+ real Temperature_current; // current temperature
+ real kT_over_q; // e.g., 0.0259 at 300 degrees K [eV]
+
+ // transient simulation parameters
+ real t_current; // current time step [s]
+ real t_previous; // previous time step [s]
+ real t_delta; // difference between current vs. previous time step
+
+ // local functions
+ analog function real soft_minmax;
+ input x, xmin, xmax;
+ real x, xmin, xmax;
+ real p = 10;
+ begin
+ if (x > xmax) begin
+ soft_minmax = xmax;
+ end else if (x < xmin) begin
+ soft_minmax = xmin;
+ end else begin
+ soft_minmax = x;
+ end
+ end
+ endfunction // soft_minmax
+
+ // core equations
+ analog begin
+ @(initial_step) begin
+ // initial condition
+ Temperature_current = Temperature_0;
+ Tfilament_current = Tfilament_0;
+ end
+ $bound_step(t_step); // bound maximum time step
+ t_current = $abstime; // current time
+ t_delta = t_current - t_previous;
+ gamma = gamma_k0 + gamma_k1 * pow((Tox - Tfilament_current)/1.0e-9, 3);
+ kT_over_q = (`P_K * Temperature_current) / `P_Q;
+ Tfilament_dTdt = velocity_k1 * (exp(-Eact_generation / kT_over_q) * exp( gamma * a0/Tox * V(TE,BE) / kT_over_q) -
+ exp(-Eact_recombination / kT_over_q) * exp(-gamma * a0/Tox * V(TE,BE) / kT_over_q));
+ Tfilament_current = Tfilament_current + Tfilament_dTdt * t_delta; // 1st-order update to filament thickness
+ Tfilament_current = soft_minmax(Tfilament_current, Tfilament_min, Tfilament_max); // bound filament thickness
+ I(TE,BE) <+ I_k1 * exp(-(Tox - Tfilament_current)/(Tox - Tfilament_ref)) * sinh( V(TE,BE)/V_ref );
+ Temperature_current = (Temperature_current + t_delta * (abs(V(TE,BE)*I(TE,BE)) / C_thermal + Temperature_0/tau_thermal))
+ / (1 + t_delta/tau_thermal); // 1st-order update to temperature
+ t_previous = $abstime; // current time step is previous time step for next iteration
+ end
+endmodule
diff --git a/cells/reram_cell/sky130_fd_pr_reram__reram_cell.va.params.json b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.va.params.json
new file mode 100644
index 0000000..e3aeca3
--- /dev/null
+++ b/cells/reram_cell/sky130_fd_pr_reram__reram_cell.va.params.json
@@ -0,0 +1,70 @@
+{
+ "DEFAULT_area_ox": {
+ "value": 0.1024,
+ "parameter_explanation": "area of TE/BE overlap [meters^2]"
+ },
+ "DEFAULT_Tfilament_0": {
+ "value": 3.3e-9,
+ "parameter_explanation": "initial thickness of conductive filament (at t=0 for transient simulation) [meters]"
+ },
+ "DEFAULT_t_step": {
+ "value": 1.0e-9,
+ "parameter_explanation": "maximum time step [seconds]"
+ },
+ "cal_Tox": {
+ "value": 5.0e-9,
+ "parameter_explanation": "thickness of oxide between TE and BE [meters]"
+ },
+ "cal_Tfilament_max": {
+ "value": 4.9e-9,
+ "parameter_explanation": "maximum thickness of conductive filament (for minimum resistance) [meters]"
+ },
+ "cal_Tfilament_min": {
+ "value": 3.3e-9,
+ "parameter_explanation": "minimum thickness of conductive filament (for maximum resistance) [meters]"
+ },
+ "cal_Eact_generation": {
+ "value": 1.501,
+ "parameter_explanation": "activation energy for vacancy generation [eV]"
+ },
+ "cal_Eact_recombination": {
+ "value": 1.500,
+ "parameter_explanation": "activation energy for vacancy recombination [eV]"
+ },
+ "cal_I_k1": {
+ "value": 6.140e-5,
+ "parameter_explanation": "current calibration parameter [Amps]"
+ },
+ "cal_Tfilament_ref": {
+ "value": 4.7249e-9,
+ "parameter_explanation": "filament thickness calibration parameter [meters]"
+ },
+ "cal_V_ref": {
+ "value": 0.430,
+ "parameter_explanation": "voltage calibration parameter [Volts]"
+ },
+ "cal_velocity_k1": {
+ "value": 150,
+ "parameter_explanation": "velocity calibration parameter [meters/second]"
+ },
+ "cal_gamma_k0": {
+ "value": 16.5,
+ "parameter_explanation": "enhancement factor calibration parameter [unitless]"
+ },
+ "cal_gamma_k1": {
+ "value": -1.25,
+ "parameter_explanation": "enhancement factor calibration parameter [unitless]"
+ },
+ "cal_Temperature_0": {
+ "value": 300,
+ "parameter_explanation": "intial temperature [degrees Kelvin]"
+ },
+ "cal_C_thermal": {
+ "value": 3.1825e-16,
+ "parameter_explanation": "effective thermal capacitance [Joules/Kelvin]"
+ },
+ "cal_tau_thermal": {
+ "value": 0.23e-9,
+ "parameter_explanation": "effective thermal time constant [seconds]"
+ }
+}
\ No newline at end of file
diff --git a/cells/reram_inst/sky130_fd_pr_reram__reram_inst.gds b/cells/reram_inst/sky130_fd_pr_reram__reram_inst.gds
new file mode 100644
index 0000000..70af7e3
--- /dev/null
+++ b/cells/reram_inst/sky130_fd_pr_reram__reram_inst.gds
Binary files differ
diff --git a/cells/reram_inst/sky130_fd_pr_reram__reram_inst.magic.lef b/cells/reram_inst/sky130_fd_pr_reram__reram_inst.magic.lef
new file mode 100644
index 0000000..e389129
--- /dev/null
+++ b/cells/reram_inst/sky130_fd_pr_reram__reram_inst.magic.lef
@@ -0,0 +1,27 @@
+# Copyright 2020 The SkyWater PDK Authors
+#
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+VERSION 5.7 ;
+ NOWIREEXTENSIONATPIN ON ;
+ DIVIDERCHAR "/" ;
+ BUSBITCHARS "[]" ;
+MACRO sky130_fd_pr_reram__reram_inst
+ CLASS BLOCK ;
+ FOREIGN sky130_fd_pr_reram__reram_inst ;
+ ORIGIN -0.310000 -0.200000 ;
+ SIZE 0.005000 BY 0.005000 ;
+END sky130_fd_pr_reram__reram_inst
+END LIBRARY
diff --git a/cells/reram_inst/sky130_fd_pr_reram__reram_inst.spice b/cells/reram_inst/sky130_fd_pr_reram__reram_inst.spice
new file mode 100644
index 0000000..fecb79e
--- /dev/null
+++ b/cells/reram_inst/sky130_fd_pr_reram__reram_inst.spice
@@ -0,0 +1,19 @@
+* Copyright 2020 The SkyWater PDK Authors
+*
+* 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.
+*
+* SPDX-License-Identifier: Apache-2.0
+
+
+* Top level circuit sky130_fd_pr_reram__reram_inst
+.end
diff --git a/cells/reram_inst/sky130_fd_pr_reram__reram_inst.svg b/cells/reram_inst/sky130_fd_pr_reram__reram_inst.svg
new file mode 100644
index 0000000..37a0ffe
--- /dev/null
+++ b/cells/reram_inst/sky130_fd_pr_reram__reram_inst.svg
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ id="svg10"
+ version="1.2"
+ viewBox="0 0 1898 1059"
+ height="1059pt"
+ width="1898pt">
+ <metadata
+ id="metadata14">
+ <rdf:RDF>
+ <cc:Work
+ rdf:about="">
+ <dc:format>image/svg+xml</dc:format>
+ <dc:type
+ rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+ </cc:Work>
+ </rdf:RDF>
+ </metadata>
+ <defs
+ id="defs5">
+ <clipPath
+ id="clip1">
+ <path
+ id="path2"
+ d="M 18.5 2.5 L 1898 2.5 L 1898 1059 L 18.5 1059 Z M 18.5 2.5 " />
+ </clipPath>
+ </defs>
+ <g
+ id="surface180">
+ <g
+ id="g7"
+ clip-rule="nonzero"
+ clip-path="url(#clip1)" />
+ </g>
+</svg>
diff --git a/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.gds b/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.gds
new file mode 100644
index 0000000..0ffcab7
--- /dev/null
+++ b/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.gds
Binary files differ
diff --git a/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.magic.lef b/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.magic.lef
new file mode 100644
index 0000000..4cb7306
--- /dev/null
+++ b/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.magic.lef
@@ -0,0 +1,27 @@
+# Copyright 2020 The SkyWater PDK Authors
+#
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+VERSION 5.7 ;
+ NOWIREEXTENSIONATPIN ON ;
+ DIVIDERCHAR "/" ;
+ BUSBITCHARS "[]" ;
+MACRO sky130_fd_pr_reram__reram_test_drc
+ CLASS BLOCK ;
+ FOREIGN sky130_fd_pr_reram__reram_test_drc ;
+ ORIGIN 0.000000 0.000000 ;
+ SIZE 0.005000 BY 0.005000 ;
+END sky130_fd_pr_reram__reram_test_drc
+END LIBRARY
diff --git a/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.spice b/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.spice
new file mode 100644
index 0000000..249ef2c
--- /dev/null
+++ b/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.spice
@@ -0,0 +1,19 @@
+* Copyright 2020 The SkyWater PDK Authors
+*
+* 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.
+*
+* SPDX-License-Identifier: Apache-2.0
+
+
+* Top level circuit sky130_fd_pr_reram__reram_test_drc
+.end
diff --git a/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.svg b/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.svg
new file mode 100644
index 0000000..3b59353
--- /dev/null
+++ b/cells/reram_test_drc/sky130_fd_pr_reram__reram_test_drc.svg
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ id="svg10"
+ version="1.2"
+ viewBox="0 0 1898 1059"
+ height="1059pt"
+ width="1898pt">
+ <metadata
+ id="metadata14">
+ <rdf:RDF>
+ <cc:Work
+ rdf:about="">
+ <dc:format>image/svg+xml</dc:format>
+ <dc:type
+ rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+ </cc:Work>
+ </rdf:RDF>
+ </metadata>
+ <defs
+ id="defs5">
+ <clipPath
+ id="clip1">
+ <path
+ id="path2"
+ d="M 18.5 2.5 L 1898 2.5 L 1898 1059 L 18.5 1059 Z M 18.5 2.5 " />
+ </clipPath>
+ </defs>
+ <g
+ id="surface178">
+ <g
+ id="g7"
+ clip-rule="nonzero"
+ clip-path="url(#clip1)" />
+ </g>
+</svg>
diff --git a/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.gds b/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.gds
new file mode 100644
index 0000000..1b4da99
--- /dev/null
+++ b/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.gds
Binary files differ
diff --git a/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.magic.lef b/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.magic.lef
new file mode 100644
index 0000000..aa2ef15
--- /dev/null
+++ b/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.magic.lef
@@ -0,0 +1,27 @@
+# Copyright 2020 The SkyWater PDK Authors
+#
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+VERSION 5.7 ;
+ NOWIREEXTENSIONATPIN ON ;
+ DIVIDERCHAR "/" ;
+ BUSBITCHARS "[]" ;
+MACRO sky130_fd_pr_reram__reram_test_lvs_property
+ CLASS BLOCK ;
+ FOREIGN sky130_fd_pr_reram__reram_test_lvs_property ;
+ ORIGIN -0.310000 -0.200000 ;
+ SIZE 0.005000 BY 0.005000 ;
+END sky130_fd_pr_reram__reram_test_lvs_property
+END LIBRARY
diff --git a/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.spice b/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.spice
new file mode 100644
index 0000000..5e0b731
--- /dev/null
+++ b/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.spice
@@ -0,0 +1,19 @@
+* Copyright 2020 The SkyWater PDK Authors
+*
+* 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.
+*
+* SPDX-License-Identifier: Apache-2.0
+
+
+* Top level circuit sky130_fd_pr_reram__reram_test_lvs_property
+.end
diff --git a/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.svg b/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.svg
new file mode 100644
index 0000000..6998e4b
--- /dev/null
+++ b/cells/reram_test_lvs_property/sky130_fd_pr_reram__reram_test_lvs_property.svg
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ id="svg10"
+ version="1.2"
+ viewBox="0 0 1898 1059"
+ height="1059pt"
+ width="1898pt">
+ <metadata
+ id="metadata14">
+ <rdf:RDF>
+ <cc:Work
+ rdf:about="">
+ <dc:format>image/svg+xml</dc:format>
+ <dc:type
+ rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+ </cc:Work>
+ </rdf:RDF>
+ </metadata>
+ <defs
+ id="defs5">
+ <clipPath
+ id="clip1">
+ <path
+ id="path2"
+ d="M 18.5 2.5 L 1898 2.5 L 1898 1059 L 18.5 1059 Z M 18.5 2.5 " />
+ </clipPath>
+ </defs>
+ <g
+ id="surface190">
+ <g
+ id="g7"
+ clip-rule="nonzero"
+ clip-path="url(#clip1)" />
+ </g>
+</svg>
diff --git a/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.gds b/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.gds
new file mode 100644
index 0000000..cd8d341
--- /dev/null
+++ b/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.gds
Binary files differ
diff --git a/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.magic.lef b/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.magic.lef
new file mode 100644
index 0000000..4acddf9
--- /dev/null
+++ b/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.magic.lef
@@ -0,0 +1,27 @@
+# Copyright 2020 The SkyWater PDK Authors
+#
+# 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.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+VERSION 5.7 ;
+ NOWIREEXTENSIONATPIN ON ;
+ DIVIDERCHAR "/" ;
+ BUSBITCHARS "[]" ;
+MACRO sky130_fd_pr_reram__reram_test_lvs_terminals
+ CLASS BLOCK ;
+ FOREIGN sky130_fd_pr_reram__reram_test_lvs_terminals ;
+ ORIGIN -0.310000 -0.200000 ;
+ SIZE 0.005000 BY 0.005000 ;
+END sky130_fd_pr_reram__reram_test_lvs_terminals
+END LIBRARY
diff --git a/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.spice b/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.spice
new file mode 100644
index 0000000..07c21cd
--- /dev/null
+++ b/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.spice
@@ -0,0 +1,19 @@
+* Copyright 2020 The SkyWater PDK Authors
+*
+* 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.
+*
+* SPDX-License-Identifier: Apache-2.0
+
+
+* Top level circuit sky130_fd_pr_reram__reram_test_lvs_terminals
+.end
diff --git a/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.svg b/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.svg
new file mode 100644
index 0000000..ae375f0
--- /dev/null
+++ b/cells/reram_test_lvs_terminals/sky130_fd_pr_reram__reram_test_lvs_terminals.svg
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ id="svg10"
+ version="1.2"
+ viewBox="0 0 1898 1059"
+ height="1059pt"
+ width="1898pt">
+ <metadata
+ id="metadata14">
+ <rdf:RDF>
+ <cc:Work
+ rdf:about="">
+ <dc:format>image/svg+xml</dc:format>
+ <dc:type
+ rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+ </cc:Work>
+ </rdf:RDF>
+ </metadata>
+ <defs
+ id="defs5">
+ <clipPath
+ id="clip1">
+ <path
+ id="path2"
+ d="M 18.5 2.5 L 1898 2.5 L 1898 1059 L 18.5 1059 Z M 18.5 2.5 " />
+ </clipPath>
+ </defs>
+ <g
+ id="surface192">
+ <g
+ id="g7"
+ clip-rule="nonzero"
+ clip-path="url(#clip1)" />
+ </g>
+</svg>
