div200.vhd

来自「fpga的应用」· VHDL 代码 · 共 25 行

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
entity div200 is
  port(clk:in std_logic;
       clkout:out std_logic);
end div200;
architecture behav of div200 is
signal sig:integer range 0 to 99;
signal clk1:std_logic;
begin
process(clk)
 begin
    if clk'event and clk='1' then
       if sig=99 then 
            sig<=0;
            clk1<=not clk1;
       else
            sig<=sig+1;
       end if;
     clkout<=clk1;
     end if;
   
end process;
end behav;