Corrected the long-time problem with the erroneous name "pfet_pass",

since the SRAM cells do not use pFETs as pass transistors and the device in question is the complement of "nfet_latch" and should be called "pfet_latch". This name change has been made throughout the repository, leaving only a subcircuit definition for "pfet_pass" that instantiates "pfet_latch", for backwards compatibility with legacy netlists.
efabless · Jul 16, 2023 · 3720f7f · 3720f7f
1 parent e3c1e06
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diff --git a/cells/special_pfet_latch/sky130_fd_pr__special_pfet_latch.pm3.spice b/cells/special_pfet_latch/sky130_fd_pr__special_pfet_latch.pm3.spice
@@ -0,0 +1,351 @@
+* 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.
+
+* SKY130 Spice File.
+.param sky130_fd_pr__special_pfet_latch__tox_slope_spectre = 0.0
+.param sky130_fd_pr__special_pfet_latch__vth0_slope_spectre = 0.0
+.param sky130_fd_pr__special_pfet_latch__voff_slope_spectre = 0.0
+.param sky130_fd_pr__special_pfet_latch__nfactor_slope_spectre = 0.0
+* statistics {
+*   process {
+*   }
+*   mismatch {
+*     vary sky130_fd_pr__special_pfet_latch__tox_slope_spectre dist=gauss std = 1.0
+*     vary sky130_fd_pr__special_pfet_latch__vth0_slope_spectre dist=gauss std = 1.0
+*     vary sky130_fd_pr__special_pfet_latch__voff_slope_spectre dist=gauss std = 1.0
+*     vary sky130_fd_pr__special_pfet_latch__nfactor_slope_spectre dist=gauss std = 1.0
+*   }
+* }
+
+.subckt  sky130_fd_pr__special_pfet_latch d g s b
++ 
+.param  l = 1 w = 1 ad = 0 as = 0 pd = 0 ps = 0 nrd = 0 nrs = 0 mult = 1 sa = 0 sb = 0 sd = 0.0
+msky130_fd_pr__special_pfet_latch d g s b sky130_fd_pr__special_pfet_latch__model l = {l} w = {w} ad = {ad} as = {as} pd = {pd} ps = {ps} nrd = {nrd} nrs = {nrs}
+.model sky130_fd_pr__special_pfet_latch__model.0 pmos
++ lmin = 1.495e-007 lmax = 1.505e-007 wmin = 1.395e-007 wmax = 1.405e-7
++ level = 49.0
++ 
++ tnom = 30.0
++ version = 3.2
++ tox = {4.214e-009*sky130_fd_pr__special_pfet_latch__tox_mult+sky130_fd_pr__special_pfet_latch__tox_slope_spectre*(4.214e-09*sky130_fd_pr__special_pfet_latch__tox_mult*(sky130_fd_pr__special_pfet_latch__tox_slope/sqrt(l*w*mult)))}
++ toxm = 4.214e-9
++ xj = 1.15e-7
++ nch = 7.919257e+17
++ lln = 1.0
++ lwn = 1.0
++ wln = 1.0
++ wwn = 1.0
++ lint = {0+sky130_fd_pr__special_pfet_latch__lint_diff}
++ ll = 0.0
++ lw = 0.0
++ lwl = 0.0
++ wint = {0+sky130_fd_pr__special_pfet_latch__wint_diff}
++ wl = 0.0
++ ww = 0.0
++ wwl = 0.0
++ mobmod = 1.0
++ binunit = 2.0
++ dwg = 0.0
++ dwb = 0.0
+* Diode Parameters
++ 
+* + ldif = 0.0
+* + hdif = 0.0
+* + rd = 0.0
+* + rs = 0.0
+* + rsc = 0.0
+* + rdc = 0.0
++ 
++ rsh = 1.0
+* Threshold Voltage Parameters
++ vth0 = {-0.8866+sky130_fd_pr__special_pfet_latch__vth0_diff_0+sky130_fd_pr__special_pfet_latch__vth0_slope_spectre*((sky130_fd_pr__special_pfet_latch__vth0_slope/sqrt(l*w*mult)))}
++ k1 = 0.48313
++ k2 = {-0.086211+sky130_fd_pr__special_pfet_latch__k2_diff_0}
++ k3 = {0+sky130_fd_pr__special_pfet_latch__k3_diff}
++ dvt0 = {0+sky130_fd_pr__special_pfet_latch__dvt0_diff}
++ dvt1 = 1.0e-10
++ dvt2 = 0.0
++ dvt0w = 0.0
++ dvt1w = 10001.0
++ dvt2w = 0.0
++ nlx = 0.0
++ w0 = 1.0e-10
++ k3b = 0.0
++ ngate = 1.0e+23
++ vfb = -0.3872688
+* Mobility Parameters
++ vsat = {100410+sky130_fd_pr__special_pfet_latch__vsat_diff_0}
++ ua = -1.5724e-9
++ ub = 1.0206e-18
++ uc = -2.1234e-11
++ rdsw = {659.8838+sky130_fd_pr__special_pfet_latch__rdsw_diff_0}
++ prwb = 0.0
++ prwg = 0.0
++ wr = 1.0
++ u0 = {0.0038566+sky130_fd_pr__special_pfet_latch__u0_diff_0}
++ a0 = 1.6572
++ keta = 0.032965
++ a1 = 0.0
++ a2 = 0.4
++ ags = 0.01944
++ b0 = 0.0
++ b1 = 0.0
+* Subthreshold Current Parameters
++ voff = {-0.17082+sky130_fd_pr__special_pfet_latch__voff_diff_0+sky130_fd_pr__special_pfet_latch__voff_slope_spectre*((sky130_fd_pr__special_pfet_latch__voff_slope/sqrt(l*w*mult)))}
++ nfactor = {2+sky130_fd_pr__special_pfet_latch__nfactor_diff_0+sky130_fd_pr__special_pfet_latch__nfactor_slope_spectre*((sky130_fd_pr__special_pfet_latch__nfactor_slope/sqrt(l*w*mult)))}
++ cit = {-0.002+sky130_fd_pr__special_pfet_latch__cit_diff}
++ cdsc = {0+sky130_fd_pr__special_pfet_latch__cdsc_diff}
++ cdscb = {0.0005+sky130_fd_pr__special_pfet_latch__cdscb_diff}
++ cdscd = {0+sky130_fd_pr__special_pfet_latch__cdscd_diff}
++ eta0 = 0.001
++ etab = 0.0
++ dsub = 1.0e-10
+* Rout Parameters
++ pclm = 2.4129
++ pdiblc1 = 0.0
++ pdiblc2 = 0.023805348
++ pdiblcb = -0.5
++ drout = 1.0e-10
++ pscbe1 = 7.0054e+8
++ pscbe2 = 1.0e-20
++ pvag = 0.0
++ delta = 0.071729
++ alpha0 = 1.3735e-6
++ alpha1 = 0.0
++ beta0 = 23.765
+* Temperature Effects Parameters
++ kt1 = {-0.50219+sky130_fd_pr__special_pfet_latch__kt1_diff_0}
++ kt2 = {-0.048934+sky130_fd_pr__special_pfet_latch__kt2_diff}
++ at = 3000.3
++ ute = -0.8
++ ua1 = -4.1272e-11
++ ub1 = 4.0968e-19
++ uc1 = 1.2689e-11
++ kt1l = {0+sky130_fd_pr__special_pfet_latch__kt1l_diff}
++ prt = 0.49191
+* Capacitance Parameters
++ cj = {0.00074079*sky130_fd_pr__special_pfet_latch__ajunction_mult}
++ mj = 0.34629
++ pb = 0.6587
++ cjsw = {9.88e-011*sky130_fd_pr__special_pfet_latch__pjunction_mult}
++ mjsw = 0.29781
++ pbsw = 0.7418
++ cjswg = 2.3894e-10
++ mjswg = 0.9274
++ pbswg = 1.4338
++ tpb = 0.0020386
++ tpbsw = 0.001246
++ tpbswg = 0.0
++ tcj = 0.0012407
++ tcjsw = 0.00037357
++ tcjswg = 2.0e-12
++ js = 2.1483e-5
++ jsw = 8.040000000000001e-10
++ nj = 1.3632
++ xti = 5.2
++ cgdo = {1.4045e-010*sky130_fd_pr__special_pfet_latch__overlap_mult}
++ cgso = {1.4045e-010*sky130_fd_pr__special_pfet_latch__overlap_mult}
++ cgbo = 0.0
++ capmod = 3.0
+* + nqsmod = 0.0
++ elm = 0.0
++ xpart = 0.0
++ cgsl = {1.0005e-011*sky130_fd_pr__special_pfet_latch__overlap_mult}
++ cgdl = {1.0005e-011*sky130_fd_pr__special_pfet_latch__overlap_mult}
++ ckappa = 0.6
++ cf = 1.2e-11
++ clc = 1.0e-7
++ cle = 0.6
++ dlc = {5.67e-009+sky130_fd_pr__special_pfet_latch__dlc_diff+sky130_fd_pr__special_pfet_latch__dlc_rotweak}
++ dwc = {0+sky130_fd_pr__special_pfet_latch__dwc_diff}
++ vfbcv = -0.14469
++ acde = 0.401
++ moin = 18.13
++ noff = 3.9
++ voffcv = -0.10701
++ lwc = 0.0
++ llc = 0.0
++ lwlc = 0.0
++ wlc = 0.0
++ wwc = 0.0
++ wwlc = 0.0
+.model sky130_fd_pr__special_pfet_latch__model.1 pmos
++ lmin = 0.245e-007 lmax = 0.805e-007 wmin = 1.395e-007 wmax = 1.405e-7
++ level = 49.0
++ 
++ tnom = 30.0
++ version = 3.2
++ tox = {4.214e-009*sky130_fd_pr__special_pfet_latch__tox_mult}
++ toxm = 4.214e-9
++ xj = 1.15e-7
++ nch = 7.919257e+17
++ lln = 1.0
++ lwn = 1.0
++ wln = 1.0
++ wwn = 1.0
++ lint = {-2.4825e-8+sky130_fd_pr__special_pfet_latch__lint_diff}
++ ll = 0.0
++ lw = 0.0
++ lwl = 0.0
++ wint = {-5.522e-8+sky130_fd_pr__special_pfet_latch__wint_diff}
++ wl = 0.0
++ ww = 0.0
++ wwl = 0.0
++ mobmod = 1.0
++ binunit = 2.0
++ dwg = 0.0
++ dwb = 0.0
+* Diode Parameters
++ 
++ ldif = 0.0
++ hdif = 0.0
++ rd = 0.0
++ rs = 0.0
++ rsc = 0.0
++ rdc = 0.0
++ 
++ rsh = 1.0
+* Threshold Voltage Parameters
++ vth0 = {-0.8866+sky130_fd_pr__special_pfet_latch__vth0_diff_0}
++ k1 = 0.48313
++ k2 = {-0.086211+sky130_fd_pr__special_pfet_latch__k2_diff_0}
++ k3 = {0+sky130_fd_pr__special_pfet_latch__k3_diff}
++ dvt0 = {0+sky130_fd_pr__special_pfet_latch__dvt0_diff}
++ dvt1 = 1.0e-10
++ dvt2 = 0.0
++ dvt0w = 0.0
++ dvt1w = 10001.0
++ dvt2w = 0.0
++ nlx = 0.0
++ w0 = 1.0e-10
++ k3b = 0.0
++ ngate = 1.0e+23
++ vfb = -0.3872688
+* Mobility Parameters
++ vsat = {100410+sky130_fd_pr__special_pfet_latch__vsat_diff_0}
++ ua = -1.5724e-9
++ ub = 1.0206e-18
++ uc = -2.1234e-11
++ rdsw = {659.8838+sky130_fd_pr__special_pfet_latch__rdsw_diff_0}
++ prwb = 0.0
++ prwg = 0.0
++ wr = 1.0
++ u0 = {0.0038566+sky130_fd_pr__special_pfet_latch__u0_diff_0}
++ a0 = 1.6572
++ keta = 0.032965
++ a1 = 0.0
++ a2 = 0.4
++ ags = 0.01944
++ b0 = 0.0
++ b1 = 0.0
+* Subthreshold Current Parameters
++ voff = {-0.17082+sky130_fd_pr__special_pfet_latch__voff_diff_0}
++ nfactor = {2+sky130_fd_pr__special_pfet_latch__nfactor_diff_0}
++ cit = {-0.002+sky130_fd_pr__special_pfet_latch__cit_diff}
++ cdsc = {0+sky130_fd_pr__special_pfet_latch__cdsc_diff}
++ cdscb = {0.0005+sky130_fd_pr__special_pfet_latch__cdscb_diff}
++ cdscd = {0+sky130_fd_pr__special_pfet_latch__cdscd_diff}
++ eta0 = 0.001
++ etab = 0.0
++ dsub = 1.0e-10
+* Rout Parameters
++ pclm = 2.4129
++ pdiblc1 = 0.0
++ pdiblc2 = 0.023805348
++ pdiblcb = -0.5
++ drout = 1.0e-10
++ pscbe1 = 7.0054e+8
++ pscbe2 = 1.0e-20
++ pvag = 0.0
++ delta = 0.071729
++ alpha0 = 1.3735e-6
++ alpha1 = 0.0
++ beta0 = 23.765
+* Temperature Effects Parameters
++ kt1 = {-0.50219+sky130_fd_pr__special_pfet_latch__kt1_diff_0}
++ kt2 = {-0.048934+sky130_fd_pr__special_pfet_latch__kt2_diff}
++ at = 3000.3
++ ute = -0.8
++ ua1 = -4.1272e-11
++ ub1 = 4.0968e-19
++ uc1 = 1.2689e-11
++ kt1l = {0+sky130_fd_pr__special_pfet_latch__kt1l_diff}
++ prt = 0.49191
+* Capacitance Parameters
++ cj = {0.00074079*sky130_fd_pr__special_pfet_latch__ajunction_mult}
++ mj = 0.34629
++ pb = 0.6587
++ cjsw = {9.88e-011*sky130_fd_pr__special_pfet_latch__pjunction_mult}
++ mjsw = 0.29781
++ pbsw = 0.7418
++ cjswg = 2.3894e-10
++ mjswg = 0.9274
++ pbswg = 1.4338
++ tpb = 0.0020386
++ tpbsw = 0.001246
++ tpbswg = 0.0
++ tcj = 0.0012407
++ tcjsw = 0.00037357
++ tcjswg = 2.0e-12
++ js = 2.1483e-5
++ jsw = 8.040000000000001e-10
++ nj = 1.3632
++ xti = 5.2
++ cgdo = {1.4045e-010*sky130_fd_pr__special_pfet_latch__overlap_mult}
++ cgso = {1.4045e-010*sky130_fd_pr__special_pfet_latch__overlap_mult}
++ cgbo = 0.0
++ capmod = 3.0
+* + nqsmod = 0.0
++ elm = 0.0
++ xpart = 0.0
++ cgsl = {1.0005e-011*sky130_fd_pr__special_pfet_latch__overlap_mult}
++ cgdl = {1.0005e-011*sky130_fd_pr__special_pfet_latch__overlap_mult}
++ ckappa = 0.6
++ cf = 1.2e-11
++ clc = 1.0e-7
++ cle = 0.6
++ dlc = {-2.4825e-8+sky130_fd_pr__special_pfet_latch__dlc_diff+sky130_fd_pr__special_pfet_latch__dlc_rotweak}
++ dwc = {3.622e-8+sky130_fd_pr__special_pfet_latch__dwc_diff}
++ vfbcv = -0.14469
++ acde = 0.401
++ moin = 18.13
++ noff = 3.9
++ voffcv = -0.10701
++ lwc = 0.0
++ llc = 0.0
++ lwlc = 0.0
++ wlc = 0.0
++ wwc = 0.0
++ wwlc = 0.0
++ noimod = 2.0
++ noia = {5.3000000E+40*1.6e-21}
++ noib = {5.6400000E+22*1.6e-21}
++ noic = {6.0700000E+07*1.6e-21}
++ em = 4.1000000e+7
++ ef = 0.88
+.ends sky130_fd_pr__special_pfet_latch
+
+* NOTE:  "special_pfet_pass" was incorrect nomenclature and has been fixed to
+* "special_pfet_latch".  The original incorrect name is kept here to prevent
+* breaking legacy netlists.  ---Tim 7/16/2023
+
+.subckt  sky130_fd_pr__special_pfet_pass d g s b
+.param l = 1 w = 1 ad = 0 as = 0 pd = 0 ps = 0 nrd = 0 nrs = 0 mult = 1
++ sa = 0 sb = 0 sd = 0.0
+xsky130_fd_pr__special_pfet_pass d g s b
++ l = {l} w = {w} ad = {ad} as = {as} pd = {pd} ps = {ps}
++ nrd = {nrd} nrs = {nrs} mult = {mult} sa = {sa} sb = {sb} sd = {sd}
++ sky130_fd_pr__special_pfet_latch
+.ends sky130_fd_pr__special_pfet_pass
+
diff --git a/..._special_pfet_pass__mismatch.corner.spice → ...special_pfet_latch__mismatch.corner.spice b/..._special_pfet_pass__mismatch.corner.spice → ...special_pfet_latch__mismatch.corner.spice
@@ -13,9 +13,9 @@
 * limitations under the License.
 
 * SKY130 Spice File.
-.param sky130_fd_pr__special_pfet_pass__tox_slope=5.567e-03
-.param sky130_fd_pr__special_pfet_pass__vth0_slope=5.567e-03
-.param sky130_fd_pr__special_pfet_pass__nfactor_slope=0.0
-.param sky130_fd_pr__special_pfet_pass__voff_slope=0.0
-.param sky130_fd_pr__special_pfet_pass__lint_slope=0.0
-.param sky130_fd_pr__special_pfet_pass__wint_slope=0.0
+.param sky130_fd_pr__special_pfet_latch__tox_slope=5.567e-03
+.param sky130_fd_pr__special_pfet_latch__vth0_slope=5.567e-03
+.param sky130_fd_pr__special_pfet_latch__nfactor_slope=0.0
+.param sky130_fd_pr__special_pfet_latch__voff_slope=0.0
+.param sky130_fd_pr__special_pfet_latch__lint_slope=0.0
+.param sky130_fd_pr__special_pfet_latch__wint_slope=0.0
diff --git a/.../sky130_fd_pr__special_pfet_pass__iv.data → ...sky130_fd_pr__special_pfet_latch__iv.data b/.../sky130_fd_pr__special_pfet_pass__iv.data → ...sky130_fd_pr__special_pfet_latch__iv.data
diff --git a/..._fd_pr__special_pfet_pass__pfet_vth.spice → ...fd_pr__special_pfet_latch__pfet_vth.spice b/..._fd_pr__special_pfet_pass__pfet_vth.spice → ...fd_pr__special_pfet_latch__pfet_vth.spice
@@ -5,7 +5,7 @@
 
 * Gate bias
 Rg 1 2 680
-X1 3 2 5 5 sky130_fd_pr__special_pfet_pass W=0.14 L=0.15 M=1
+X1 3 2 5 5 sky130_fd_pr__special_pfet_latch W=0.14 L=0.15 M=1
 Rd 3 4 100
 
 * DC source for current measure
@@ -18,7 +18,7 @@ Vdd 5 0 DC 3.3V
 dc Vdd 0 1.8 0.01 Vgb 0 1.2 0.01
 let vgs = V(5) - V(1)
 let vds = V(5) - V(3)
-wrdata sky130_fd_pr__special_pfet_pass__iv.data Vid#branch vgs vds
+wrdata sky130_fd_pr__special_pfet_latch__iv.data Vid#branch vgs vds
 
 * Sweep Vgs from 0 to 1.2V
 dc Vgb 0 1.2 0.01

diff --git a/...30_fd_pr__special_pfet_pass_ids_v_vds.svg → ...0_fd_pr__special_pfet_latch_ids_v_vds.svg b/...30_fd_pr__special_pfet_pass_ids_v_vds.svg → ...0_fd_pr__special_pfet_latch_ids_v_vds.svg