set_property PACKAGE_PIN E3 [get_ports clk]
set_property PACKAGE_PIN A8 [get_ports d]
set_property PACKAGE_PIN D9 [get_ports r]
set_property PACKAGE_PIN H5 [get_ports q]

set_property IOSTANDARD LVCMOS33 [get_ports clk]
set_property IOSTANDARD LVCMOS33 [get_ports d]
set_property IOSTANDARD LVCMOS33 [get_ports r]
set_property IOSTANDARD LVCMOS33 [get_ports q]