Update for IO cells; contains critical fix for IOPadVdd

* IOPadVdd: remove spurious diodes from netlist and update IOPadVdd internal connections in layout to fix reported problem. Previous layout did not have proper ESD on Vdd pin and also resulted in iovdd to iovss static current. * Update performance simulation after fixing the diode model. Removes the NA values present in the result tables. * Set LEF version to 5.7 * Fix indentation in dummy liberty file. Signed-off-by: Staf Verhaegen <staf.verhaegen@chipflow.io>
IHP-GmbH · May 13, 2024 · fb549f8 · fb549f8
1 parent 5d29b67
commit fb549f8
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diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/doc/DriveStrengthSim.html b/ihp-sg13g2/libs.ref/sg13g2_io/doc/DriveStrengthSim.html
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/doc/InputPerformance.html b/ihp-sg13g2/libs.ref/sg13g2_io/doc/InputPerformance.html
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/doc/README.md b/ihp-sg13g2/libs.ref/sg13g2_io/doc/README.md
@@ -14,7 +14,13 @@ This is the sg13g2_io library. The following files are included in this library:
 These files are generated from python scripts of the Chips4Makers based IHP SG13G2
 PDK. The code can be found in the
 [c4m-pdk-ihpsg13g2](https://gitlab.com/Chips4Makers/c4m-pdk-ihpsg13g2.git) repo.
-This library is built from version `0.0.1` of that source code.
+This library is built from version `0.0.3` of that source code.
 The `README.md` file of this project explains how to use the code in there. The whole
 build of the files plus preparation of the files described above for upstreaming can be
 generated with the command `pdm doit patch4upstream`.
+
+It also contains externally contributed files:
+
+* cdl/sg13g2_iocell.cdl: CDL netlist
+* verilog/sg13g2_io.v: verilog netlist
+* liberty/sg13g2_iocell_*lib: liberty files with timing
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/gds/sg13g2_io.gds b/ihp-sg13g2/libs.ref/sg13g2_io/gds/sg13g2_io.gds
diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/lef/sg13g2_io.lef b/ihp-sg13g2/libs.ref/sg13g2_io/lef/sg13g2_io.lef
@@ -1,5 +1,5 @@
 # Autogenerated file; please don't edit
-# date: 2024-02-13 10:23:51.125473
+# date: 2024-05-13 13:33:05.137460
 
 ########################################################################
 #
@@ -19,7 +19,7 @@
 #
 ########################################################################
 
-VERSION 5.8 ;
+VERSION 5.7 ;
 
 SITE sg13g2_ioSite
     CLASS PAD ;

diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/lef/sg13g2_io_notracks.lef b/ihp-sg13g2/libs.ref/sg13g2_io/lef/sg13g2_io_notracks.lef
@@ -1,7 +1,25 @@
 # Autogenerated file; please don't edit
-# date: 2024-02-13 10:24:29.452422
+# date: 2024-05-13 13:33:15.410823
 
-VERSION 5.8 ;
+########################################################################
+#
+# Copyright 2024 IHP 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.
+#
+########################################################################
+
+VERSION 5.7 ;
 
 SITE sg13g2_ioSite
     CLASS PAD ;

diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/liberty/sg13g2_io_dummy.lib b/ihp-sg13g2/libs.ref/sg13g2_io/liberty/sg13g2_io_dummy.lib
@@ -86,7 +86,7 @@ library (sg13g2_io_dummy) {
         index_1 ("10, 200");
         index_2 ("500, 30000");
     }
-           
+
     cell (sg13g2_Corner) {
         area : 32400.0 
         is_decap_cell : false;
@@ -97,7 +97,7 @@ library (sg13g2_io_dummy) {
         cell_leakage_power : 0;
         cell_footprint : "fill";
     }
-           
+
     cell (sg13g2_Filler200) {
         area : 180.0 
         is_decap_cell : false;
@@ -222,8 +222,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-            }
-            pin (pad) {
+        }
+        pin (pad) {
             direction : input;
             is_pad : true;
             input_voltage : io_input;
@@ -308,11 +308,9 @@ library (sg13g2_io_dummy) {
                         "200, 200" \
                     );
                 }
-            }   
-        }    
-      }
-
-
+            }
+        }
+    }
 
     cell (sg13g2_IOPadOut16mA) {
         area: 14400;
@@ -385,8 +383,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-                }    }
-
+        }
+    }
 
     cell (sg13g2_IOPadOut30mA) {
         area: 14400;
@@ -459,7 +457,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-                }    }
+        }
+    }
 
     cell (sg13g2_IOPadTriOut4mA) {
         area: 14400;
@@ -603,7 +602,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-                }    }
+        }
+    }
 
     cell (sg13g2_IOPadTriOut16mA) {
         area: 14400;
@@ -747,7 +747,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-                }    }
+        }
+    }
 
     cell (sg13g2_IOPadTriOut30mA) {
         area: 14400;
@@ -891,7 +892,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-                }    }
+        }
+    }
 
     cell (sg13g2_IOPadInOut4mA) {
         area: 14400;
@@ -951,8 +953,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-            }
-            pin (c2p) {
+        }
+        pin (c2p) {
             direction : input;
             input_voltage : core_input;
             related_ground_pin : vss;
@@ -1072,7 +1074,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-                }    }
+        }
+    }
 
     cell (sg13g2_IOPadInOut16mA) {
         area: 14400;
@@ -1132,8 +1135,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-            }
-            pin (c2p) {
+        }
+        pin (c2p) {
             direction : input;
             input_voltage : core_input;
             related_ground_pin : vss;
@@ -1253,7 +1256,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-                }    }
+        }
+    }
 
     cell (sg13g2_IOPadInOut30mA) {
         area: 14400;
@@ -1313,8 +1317,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-            }
-            pin (c2p) {
+        }
+        pin (c2p) {
             direction : input;
             input_voltage : core_input;
             related_ground_pin : vss;
@@ -1434,8 +1438,8 @@ library (sg13g2_io_dummy) {
                     );
                 }
             }
-          }    
         }
+    }
 
     cell (sg13g2_IOPadIOVss) {
         area: 14400;

diff --git a/ihp-sg13g2/libs.ref/sg13g2_io/spice/sg13g2_io.spi b/ihp-sg13g2/libs.ref/sg13g2_io/spice/sg13g2_io.spi
@@ -1,3 +1,8 @@
+* sg13g2_io
+
+* Autogenerated file; please don't edit
+* date: 2024-05-06 15:00:13.438920
+
 ************************************************************************
 *
 * Copyright 2024 IHP PDK Authors
@@ -16,7 +21,6 @@
 *
 ************************************************************************
 
-* sg13g2_io
 
 * sg13g2_io_tie
 .subckt sg13g2_io_tie vdd vss
@@ -482,8 +486,6 @@ Xpmosguardring supply sg13g2_GuardRing_N9472W2216HTT
 Xnclamp iovss iovdd vdd ngate sg13g2_Clamp_N43N43D4R
 Xrcres vdd res_cap sg13g2_RCClampResistor
 Xrcinv vdd iovss res_cap ngate sg13g2_RCClampInverter
-Xdcndiode iovss vdd iovdd sg13g2_DCNDiode
-Xdcpdiode vdd iovdd iovss sg13g2_DCPDiode
 .ends sg13g2_IOPadVdd
 
 * sg13g2_IOPadIn