latch.vhd

来自「一本很好的关于学习VHDL的书,Fundamentals of Digital 」· VHDL 代码 · 共 18 行

LIBRARY ieee ; 
USE ieee.std_logic_1164.all ; 

ENTITY latch IS 
	PORT ( 	D, Clk 	: IN 	STD_LOGIC ; 
			Q 		: OUT 	STD_LOGIC) ; 
END latch ;

ARCHITECTURE Behavior OF latch IS    
BEGIN
	PROCESS ( D, Clk ) 
	BEGIN
		IF Clk = '1' THEN 
			Q <= D ; 
		END IF ; 
	END PROCESS ; 
END Behavior ;