vhdl60进制递增计数器
时间: 2023-09-12 17:05:12 浏览: 92
以下是一个VHDL的60进制递增计数器的实现示例:
```
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
entity counter60 is
Port ( clk : in STD_LOGIC;
reset : in STD_LOGIC;
count_out : out STD_LOGIC_VECTOR (5 downto 0));
end counter60;
architecture Behavioral of counter60 is
signal count_internal : integer range 0 to 59 := 0;
begin
process(clk, reset)
begin
if reset = '1' then
count_internal <= 0;
elsif rising_edge(clk) then
if count_internal = 59 then
count_internal <= 0;
else
count_internal <= count_internal + 1;
end if;
end if;
end process;
count_out <= std_logic_vector(to_unsigned(count_internal, 6));
end Behavioral;
```
这个计数器使用一个`integer`类型的内部计数变量来表示当前的计数值。当`reset`信号高电平时,计数器会被重置为0。每当时钟信号`clk`上升沿到达时,计数器会递增一次。当计数器的值达到59时,它会被重置为0,从而实现60进制的计数。最后,将计数器的值转换为6位的二进制数,并赋值给`count_out`输出端口。
阅读全文