Latch With Positive Gate and Asynchronous Reset Coding VHDL Example - 2024.1 English

Vivado Design Suite User Guide: Synthesis (UG901)

Document ID
UG901
Release Date
2024-05-30
Version
2024.1 English

Filename: latches.vhd

-- Latch with Positive Gate and Asynchronous Reset
-- File: latches.vhd
library ieee;
use ieee.std_logic_1164.all;

entity latches is
port(
G, D, CLR : in std_logic;
Q : out std_logic
);
end latches;

architecture archi of latches is
begin
process(CLR, D, G)
begin
if (CLR = '1') then
Q <= '0';
elsif (G = '1') then
Q <= D;
end if;
end process;
end archi;