diff --git a/.travis/script.sh b/.travis/script.sh
index 675ab4996..ba4c209a1 100755
--- a/.travis/script.sh
+++ b/.travis/script.sh
@@ -120,6 +120,9 @@ python3 openfpga_flow/scripts/run_fpga_task.py openfpga_shell/generate_fabric --
 echo -e "Testing Verilog testbench generation only";
 python3 openfpga_flow/scripts/run_fpga_task.py openfpga_shell/generate_testbench --debug --show_thread_logs
 
+echo -e "Testing SDC generation with time units";
+python3 openfpga_flow/scripts/run_fpga_task.py openfpga_shell/sdc_time_unit --debug --show_thread_logs
+
 # Verify MCNC big20 benchmark suite with ModelSim 
 # Please make sure you have ModelSim installed in the environment
 # Otherwise, it will fail
diff --git a/openfpga_flow/OpenFPGAShellScripts/sdc_time_unit_example_script.openfpga b/openfpga_flow/OpenFPGAShellScripts/sdc_time_unit_example_script.openfpga
new file mode 100644
index 000000000..1d153a4e9
--- /dev/null
+++ b/openfpga_flow/OpenFPGAShellScripts/sdc_time_unit_example_script.openfpga
@@ -0,0 +1,61 @@
+# Run VPR for the 'and' design
+#--write_rr_graph example_rr_graph.xml
+vpr ${VPR_ARCH_FILE} ${VPR_TESTBENCH_BLIF} --clock_modeling route
+
+# Read OpenFPGA architecture definition
+read_openfpga_arch -f ${OPENFPGA_ARCH_FILE}
+
+# Annotate the OpenFPGA architecture to VPR data base
+# to debug use --verbose options
+link_openfpga_arch --activity_file ${ACTIVITY_FILE} --sort_gsb_chan_node_in_edges
+
+# Check and correct any naming conflicts in the BLIF netlist
+check_netlist_naming_conflict --fix --report ./netlist_renaming.xml
+
+# Apply fix-up to clustering nets based on routing results
+pb_pin_fixup --verbose
+
+# Apply fix-up to Look-Up Table truth tables based on packing results
+lut_truth_table_fixup
+
+# Build the module graph
+#  - Enabled compression on routing architecture modules
+#  - Enable pin duplication on grid modules
+build_fabric --compress_routing #--verbose
+
+# Repack the netlist to physical pbs
+# This must be done before bitstream generator and testbench generation
+# Strongly recommend it is done after all the fix-up have been applied
+repack #--verbose
+
+# Build the bitstream
+#  - Output the fabric-independent bitstream to a file
+build_architecture_bitstream --verbose --file fabric_indepenent_bitstream.xml
+
+# Build fabric-dependent bitstream
+build_fabric_bitstream --verbose
+
+# Write the Verilog netlist for FPGA fabric
+#  - Enable the use of explicit port mapping in Verilog netlist
+write_fabric_verilog --file ./SRC --explicit_port_mapping --include_timing --include_signal_init --support_icarus_simulator --print_user_defined_template --verbose
+
+# Write the Verilog testbench for FPGA fabric
+#  - We suggest the use of same output directory as fabric Verilog netlists
+#  - Must specify the reference benchmark file if you want to output any testbenches
+#  - Enable top-level testbench which is a full verification including programming circuit and core logic of FPGA
+#  - Enable pre-configured top-level testbench which is a fast verification skipping programming phase
+#  - Simulation ini file is optional and is needed only when you need to interface different HDL simulators using openfpga flow-run scripts
+write_verilog_testbench --file ./SRC --reference_benchmark_file_path ${REFERENCE_VERILOG_TESTBENCH} --print_top_testbench --print_preconfig_top_testbench --print_simulation_ini ./SimulationDeck/simulation_deck.ini
+
+# Write the SDC files for PnR backend
+#  - Turn on every options here
+write_pnr_sdc --time_unit ps --file ./SDC
+
+# Write the SDC to run timing analysis for a mapped FPGA fabric
+write_analysis_sdc --time_unit ps --file ./SDC_analysis
+
+# Finish and exit OpenFPGA
+exit
+
+# Note :
+# To run verification at the end of the flow maintain source in ./SRC directory
diff --git a/openfpga_flow/tasks/openfpga_shell/sdc_time_unit/config/task.conf b/openfpga_flow/tasks/openfpga_shell/sdc_time_unit/config/task.conf
new file mode 100644
index 000000000..1aeaa036f
--- /dev/null
+++ b/openfpga_flow/tasks/openfpga_shell/sdc_time_unit/config/task.conf
@@ -0,0 +1,34 @@
+# = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
+# Configuration file for running experiments
+# = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
+# timeout_each_job : FPGA Task script splits fpga flow into multiple jobs
+# Each job execute fpga_flow script on combination of architecture & benchmark
+# timeout_each_job is timeout for each job
+# = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
+
+[GENERAL]
+run_engine=openfpga_shell
+openfpga_shell_template=${PATH:OPENFPGA_PATH}/openfpga_flow/OpenFPGAShellScripts/sdc_time_unit_example_script.openfpga
+power_tech_file = ${PATH:OPENFPGA_PATH}/openfpga_flow/tech/PTM_45nm/45nm.xml
+power_analysis = true
+spice_output=false
+verilog_output=true
+timeout_each_job = 20*60
+fpga_flow=vpr_blif
+openfpga_arch_file=${PATH:OPENFPGA_PATH}/openfpga_flow/openfpga_arch/k4_N4_40nm_openfpga.xml
+
+[ARCHITECTURES]
+arch0=${PATH:OPENFPGA_PATH}/openfpga_flow/arch/vpr_only_templates/k4_N4_tileable_40nm.xml
+
+[BENCHMARKS]
+bench0=${PATH:OPENFPGA_PATH}/openfpga_flow/benchmarks/micro_benchmark/and2/and2.blif
+
+[SYNTHESIS_PARAM]
+bench0_top = and2
+bench0_act = ${PATH:OPENFPGA_PATH}/openfpga_flow/benchmarks/micro_benchmark/and2/and2.act
+bench0_verilog = ${PATH:OPENFPGA_PATH}/openfpga_flow/benchmarks/micro_benchmark/and2/and2.v
+bench0_chan_width = 300
+
+[SCRIPT_PARAM_MIN_ROUTE_CHAN_WIDTH]
+#end_flow_with_test=
+#vpr_fpga_verilog_formal_verification_top_netlist=