VHDL code for And gate using dataflow modeling

What is AND Gate?

It is a logic gate in which if any input is zero(reset) then the output will become zero(reset)

VHDL code for AND gate using DataFlow modeling:

                                                                                                                                    Following VHDL code for and gate using dataflow modeling is executed and fully tested in VIVADO VHDL Simulator.

library IEEE; use IEEE.STD_LOGIC_1164.ALL; -- Uncomment the following library declaration if using -- arithmetic functions with Signed or Unsigned values --use IEEE.NUMERIC_STD.ALL; -- Uncomment the following library declaration if instantiating -- any Xilinx leaf cells in this code. --library UNISIM; --use UNISIM.VComponents.all; entity AND1_DF is Port ( A : in STD_LOGIC; B : in STD_LOGIC; C : out STD_LOGIC); end AND1_DF; architecture DataFlow of AND1_DF is begin C <= A and B; end DataFlow;

RTL  schematic diagram:

               
                                                    When the above code is get successfully executed in the Simulator software like Vivado, you will get following schematic diagram

Simulation code for and gate using dataflow modeling:

To know the performance and output of an entity made by the VHDL Programming language, we have to add one more VHDL code file (called simulation code or testbench file).VHDL simulation code for and gate using dataflow modeling is given bellow-

library IEEE; use IEEE.STD_LOGIC_1164.ALL; entity AND1_DF_TB is end AND1_DF_TB; architecture DATAFLOW of AND1_DF_TB is component AND1_DF is Port ( A : in STD_LOGIC; B : in STD_LOGIC; C : out STD_LOGIC); end component; signal A :std_logic :='0'; signal B :std_logic :='0'; signal C :std_logic ; begin uut:AND1_DF port map (A=>A,B=>B,C=>C); stim_proc: process begin wait for 150ns; B <= '1'; wait for 150ns; A <= '1'; B <= '0'; wait for 150ns; B <= '1'; wait; end process; end DATAFLOW;

WaveForm of AND Gate:

                                                                  When VHDL simulation code for and gate using dataflow modeling get executed successfully then you can have a waveform which will have all input-output port name. this waveform will display output of all possible cases of input as given bellow-

Watch To know how it works:-

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