1 files changed, 14 insertions, 0 deletions
diff --git a/techlibs/cmos/cmos_cells.lib b/techlibs/cmos/cmos_cells.lib
index 1d7b8279c..164256c01 100644
--- a/techlibs/cmos/cmos_cells.lib
+++ b/techlibs/cmos/cmos_cells.lib
@@ -29,4 +29,18 @@ library(demo) {
     pin(Q) { direction: output;
               function: "IQ"; }
   }
+  cell(DFFSR) {
+    area: 18;
+    ff(IQ, IQN) { clocked_on: C;
+                  next_state: D;
+                      preset: S;
+                       clear: R; }
+    pin(C) { direction: input;
+                 clock: true; }
+    pin(D) { direction: input; }
+    pin(Q) { direction: output;
+              function: "IQ"; }
+    pin(S) { direction: input; }
+    pin(R) { direction: input; }
+  }
 }