diff --git a/technology/scn3me_subm/sp_lib/write_driver.sp b/technology/scn3me_subm/sp_lib/write_driver.sp
index edddf18c..88f80361 100644
--- a/technology/scn3me_subm/sp_lib/write_driver.sp
+++ b/technology/scn3me_subm/sp_lib/write_driver.sp
@@ -2,34 +2,35 @@
 .SUBCKT write_driver din bl br en vdd gnd
 
 **** Inverter to conver Data_in to data_in_bar ******
-M_1 din_bar din gnd gnd n W='1.2*1u' L=0.6u
-M_2 din_bar din vdd vdd p W='2.1*1u' L=0.6u
+* din_bar = inv(din)
+M_1 din_bar din gnd gnd n W=1.2u L=0.6u
+M_2 din_bar din vdd vdd p W=2.1u L=0.6u
 
 **** 2input nand gate follwed by inverter to drive BL ******
-M_3 din_bar_gated en net_7 gnd n W='2.1*1u' L=0.6u 
-M_4 net_7 din gnd gnd n W='2.1*1u' L=0.6u 
-M_5 din_bar_gated en vdd vdd p W='2.1*1u' L=0.6u 
-M_6 din_bar_gated din vdd vdd p W='2.1*1u' L=0.6u 
-
- 
-M_7 net_1 din_bar_gated vdd vdd p W='2.1*1u' L=0.6u 
-M_8 net_1 din_bar_gated gnd gnd n W='1.2*1u' L=0.6u 
+* din_bar_gated = nand(en, din)
+M_3 din_bar_gated en net_7 gnd n W=2.1u L=0.6u 
+M_4 net_7 din gnd gnd n W=2.1u L=0.6u 
+M_5 din_bar_gated en vdd vdd p W=2.1u L=0.6u 
+M_6 din_bar_gated din vdd vdd p W=2.1u L=0.6u 
+* din_bar_gated_bar = inv(din_bar_gated)
+M_7 din_bar_gated_bar din_bar_gated vdd vdd p W=2.1u L=0.6u 
+M_8 din_bar_gated_bar din_bar_gated gnd gnd n W=1.2u L=0.6u 
 
 **** 2input nand gate follwed by inverter to drive BR******
- 
-M_9 din_gated en vdd vdd p W='2.1*1u' L=0.6u
-M_10 din_gated en net_8 gnd n W='2.1*1u' L=0.6u  
-M_11 net_8 din_bar gnd gnd n W='2.1*1u' L=0.6u
-M_12 din_gated din_bar vdd vdd p W='2.1*1u' L=0.6u 
-
-M_13 net_6 din_gated vdd vdd p W='2.1*1u' L=0.6u 
-M_14 net_6 din_gated gnd gnd n W='1.2*1u' L=0.6u
+* din_gated = nand(en, din_bar)
+M_9 din_gated en vdd vdd p W=2.1u L=0.6u
+M_10 din_gated en net_8 gnd n W=2.1u L=0.6u  
+M_11 net_8 din_bar gnd gnd n W=2.1u L=0.6u
+M_12 din_gated din_bar vdd vdd p W=2.1u L=0.6u 
+* din_gated_bar = inv(din_gated)
+M_13 din_gated_bar din_gated vdd vdd p W=2.1u L=0.6u 
+M_14 din_gated_bar din_gated gnd gnd n W=1.2u L=0.6u
 
 ************************************************
-
-M_15 bl net_6 net_5 gnd n W='3.6*1u' L=0.6u 
-M_16 br net_1 net_5 gnd n W='3.6*1u' L=0.6u 
-M_17 net_5 en gnd gnd n W='3.6*1u' L=0.6u 
+* pull down with en enable
+M_15 bl din_gated_bar net_5 gnd n W=3.6u L=0.6u 
+M_16 br din_bar_gated_bar net_5 gnd n W=3.6u L=0.6u 
+M_17 net_5 en gnd gnd n W=3.6u L=0.6u 
 
 
 
diff --git a/technology/scn4m_subm/sp_lib/write_driver.sp b/technology/scn4m_subm/sp_lib/write_driver.sp
index 0411e36f..d1dbf9b2 100644
--- a/technology/scn4m_subm/sp_lib/write_driver.sp
+++ b/technology/scn4m_subm/sp_lib/write_driver.sp
@@ -2,33 +2,34 @@
 .SUBCKT write_driver din bl br en vdd gnd
 
 **** Inverter to conver Data_in to data_in_bar ******
+* din_bar = inv(din)
 M_1 din_bar din gnd gnd n W=0.8u L=0.4u
 M_2 din_bar din vdd vdd p W=1.4u L=0.4u
 
 **** 2input nand gate follwed by inverter to drive BL ******
+* din_bar_gated = nand(en, din)
 M_3 din_bar_gated en net_7 gnd n W=1.4u L=0.4u
 M_4 net_7 din gnd gnd n W=1.4u L=0.4u
 M_5 din_bar_gated en vdd vdd p W=1.4u L=0.4u
 M_6 din_bar_gated din vdd vdd p W=1.4u L=0.4u
-
-
-M_7 net_1 din_bar_gated vdd vdd p W=1.4u L=0.4u
-M_8 net_1 din_bar_gated gnd gnd n W=0.8u L=0.4u
+* din_bar_gated_bar = inv(din_bar_gated)
+M_7 din_bar_gated_bar din_bar_gated vdd vdd p W=1.4u L=0.4u
+M_8 din_bar_gated_bar din_bar_gated gnd gnd n W=0.8u L=0.4u
 
 **** 2input nand gate follwed by inverter to drive BR******
-
+* din_gated = nand(en, din_bar)
 M_9 din_gated en vdd vdd p W=1.4u L=0.4u
 M_10 din_gated en net_8 gnd n W=1.4u L=0.4u
 M_11 net_8 din_bar gnd gnd n W=1.4u L=0.4u
 M_12 din_gated din_bar vdd vdd p W=1.4u L=0.4u
-
-M_13 net_6 din_gated vdd vdd p W=1.4u L=0.4u
-M_14 net_6 din_gated gnd gnd n W=0.8u L=0.4u
+* din_gated_bar = inv(din_gated)
+M_13 din_gated_bar din_gated vdd vdd p W=1.4u L=0.4u
+M_14 din_gated_bar din_gated gnd gnd n W=0.8u L=0.4u
 
 ************************************************
-
-M_15 bl net_6 net_5 gnd n W=2.4u L=0.4u
-M_16 br net_1 net_5 gnd n W=2.4u L=0.4u
+* pull down with en enable
+M_15 bl din_gated_bar net_5 gnd n W=2.4u L=0.4u
+M_16 br din_bar_gated_bar net_5 gnd n W=2.4u L=0.4u
 M_17 net_5 en gnd gnd n W=2.4u L=0.4u