-- Contador

-- Declaración de librerías
Library ieee;
Use ieee.std_logic_1164.ALL;
Use ieee.std_logic_unsigned.ALL;

clk, reset: in std_logic;
tc: out std_logic;
q: out std_logic_vector(3 downto 0));

end contador ;

-- Definición de la arquitectura
Architecture rtl of contador is

signal estat: std_logic_vector(3 downto 0);

process(clk, reset)
begin

if reset='1' then estat<=(others=>'0');
elsif clk'event and clk='1' then
estat<=estat+1;
end if;

end process;
q<=estat;
tc <= '1' when estat = 15 else '0';

end rtl;