數(shù)電設(shè)計數(shù)字鐘(基于QUARTUS)

1、數(shù)電課設(shè)數(shù)字鐘 電子1班 陳佳麗 200981070大連理工大學本科實驗報告題目：數(shù)電課設(shè)多功能數(shù)字鐘課程名稱：數(shù)字電路課程設(shè)計 學院（系）： 電信學部 專 業(yè)： 電子與通信工程 班 級： 學生姓名： *學 號：* 完成日期： 成 績： 2010 年 12 月 17 日題目：多功能數(shù)字時鐘一 設(shè)計要求1) 具有時、分、秒的十進制數(shù)字顯示（小時從0023）2) 具有手動校時校分功能3) 具有整點報時功能，從59分50秒起，每隔2秒鐘提示一次4) 具有秒表顯示、計時功能（精確至百分之一秒），可一鍵清零5) 具有手動定時，及鬧鐘功能，LED燈持續(xù)提醒一分鐘6) 具有倒計時功能，可手動設(shè)定倒計時范圍，

2、倒計時停止時有燈光提示，可一鍵清零二 設(shè)計分析及系統(tǒng)方案設(shè)計 1. 數(shù)字鐘的基本功能部分，包括時、分、秒的顯示，手動調(diào)時，以及整點報時部分。基本模塊是由振蕩器、分頻器、計數(shù)器、譯碼器、顯示器等幾部分組成。利用DE2硬件中提供的50MHZ晶振，經(jīng)過分頻得到周期為1s的時鐘脈沖。將該信號送入計數(shù)器進行計算，并把累加結(jié)果以“時”“分”“秒”的形式通過譯碼器由數(shù)碼管顯示出來。進入手動調(diào)時功能時，通過按鍵改變控制計數(shù)器的時鐘周期，使用0.5s的時鐘脈沖進行調(diào)時計數(shù)（KEY1調(diào)秒，LOAD2調(diào)分，LOAD3調(diào)時），并通過譯碼器由七位數(shù)碼管顯示。從59分50秒開始，數(shù)字鐘進入整點報時功能。每隔兩秒提示一次。

3、（本設(shè)計中以兩個LED燈代替蜂鳴器，進行報時）2. 多功能數(shù)字鐘的秒表功能部分，計時范圍從00分00.00秒至59分59.99秒?？捎奢斎胄盘枺≧ST1）異步清零，并由按鍵（EN1）控制計時開始與停止。將DE2硬件中的50MHZ晶振經(jīng)過分頻獲得周期為0.01秒的時鐘脈沖，將信號送入計數(shù)器進行計算，并把累計結(jié)果通過譯碼器由七位數(shù)碼管顯示。3. 多功能數(shù)字鐘的鬧鐘功能部分，通過按鍵（KEY1，KEY2，KEY3）設(shè)定鬧鐘時間，當時鐘進入鬧鐘設(shè)定的時間（判斷時鐘的時信號qq6,qq5與分信號qq4，qq3分別與鬧鐘設(shè)定的時信號r6,r5與分信號r4,43是否相等），則以LED燈連續(xù)提示一分鐘。4.

4、多功能數(shù)字鐘的倒計時功能部分，可通過按鍵（LOAD7調(diào)秒,LOAD8調(diào)分，LOAD9調(diào)時）設(shè)定倒計時開始時刻。倒計時的時鐘與數(shù)字鐘的時鐘相同，每迎到一個時鐘上升沿，則計數(shù)器減一。計數(shù)器減至00時，分鐘位、秒鐘位恢復至59，時鐘位恢復至23。倒計時結(jié)束時（即00時00分00秒），控制LED燈亮，表示倒計時結(jié)束。 本設(shè)計通過數(shù)據(jù)選擇器控制譯碼器，使數(shù)碼管獨立顯示，各功能之間互不影響。當LOAD4為高電平，則對秒表信號進行譯碼，數(shù)碼管顯示秒表數(shù)據(jù)；當LOAD4為低電平，LOAD5為高電平，則對鬧鐘信號進行譯碼，數(shù)碼管顯示鬧鐘數(shù)據(jù)；當LOAD4，LOAD5為低電平,LOAD6為高電平，則對倒計時信號進

5、行譯碼，數(shù)碼管顯示倒計時信號數(shù)據(jù)；當LOAD4，LOAD5，LOAD6全為低電平，則對正常時鐘信號進行譯碼，數(shù)碼管顯示時鐘信號數(shù)據(jù)。附圖1：系統(tǒng)總體結(jié)構(gòu)框圖Load10=0數(shù)碼管顯示譯碼器數(shù)據(jù)選擇器時鐘計數(shù)器分頻（周期1s）50MHZ分頻LED提醒報時鬧鐘 Load4=0分頻（周期0.01s）秒表計數(shù)器異步清零倒計時計數(shù)器3 系統(tǒng)以及模塊硬件電路設(shè)計硬件模塊包含與，或，非多個基本邏輯單元，由硬件芯片內(nèi)部提供，軟件編程是為了目的性的操作硬件。50MHZ的晶振進行分頻操作：根據(jù)上式得到周期分別為1s,0.01s,0.5s的時鐘。附圖2系統(tǒng)硬件電路設(shè)計下載時選擇的開發(fā)系統(tǒng)模式以及管腳定義表1 GW4

6、8-CK開發(fā)系統(tǒng)工作模式：接口名稱類型(輸入/輸出)結(jié)構(gòu)圖上的信號名引腳號說明clkInput Pin_N2250MHz clock 信號En1InputPin_P21秒表運行使能段EN2InputPin_N12倒計時運行使能段KEY1InputPin_N235秒鐘調(diào)節(jié)按鍵KEY2Input Pin_P236鬧鐘分鐘調(diào)節(jié)按鍵KEY3Input Pin_W266鬧鐘時鐘調(diào)節(jié)按鍵Led1OutputPin_AE237鬧鐘顯示Led2OutputPin_AA207接近整點顯示Led3OutputPin_Y187整點顯示Led4OutputPin_AF237倒計時結(jié)束顯示Led5OutputPin_A

7、D128倒計時結(jié)束閃爍Load1InputPin_V21時鐘運行使能端Load2InputPin_V11數(shù)字鐘分鐘調(diào)節(jié)按鍵Load3InputPin_U41數(shù)字時鐘調(diào)節(jié)按鍵Load4InputPin_U31選擇秒表顯示Load5InputPin_P11選擇鬧鐘顯示Load6InputPin_A134選擇倒計時顯示Load7InputPin_C133倒計時初始秒鐘設(shè)定Load8InputPin_AC238倒計時初始分鐘設(shè)定Load9InputPin_AD138倒計時初始時鐘設(shè)定q10Output Pin_AF108秒鐘低位數(shù)碼管顯示q11OutputPin_AB128q12OutputPin_A

8、C128q13OutputPin_AD118q14OutputPin_AE118q15OutputPin_V148q16OutputPin_V138q20OutputPin_V206秒鐘高位數(shù)碼管顯示q21OutputPin_V216q22OutputPin_W216q23OutputPin_Y226q24OutputPin_AA246q25OutputPin_AA236q26OutputPin_AB246q30OutputPin_AB236分鐘低位數(shù)碼管顯示q31OutputPin_V226q32OutputPin_AC256q33OutputPin_AC266q34OutputPin_AB

9、266q35OutputPin_AB256q36OutputPin_Y246q40OutputPin_Y236分鐘高位數(shù)碼管顯示q41OutputPin_AA256q42OutputPin_AA266q43OutputPin_Y266q44OutputPin_Y256q45OutputPin_U226q46OutputPin_W246q50OutputPin_U91q51OutputPin_U11q52OutputPin_U21小時低位數(shù)碼管顯示q53OutputPin_T41q54OutputPin_R71q55OutputPin_R61q56OutputPin_T31q60OutputPi

10、n_T21小時高位數(shù)碼管顯示q61OutputPin_P61q62OutputPin_P71q63OutputPin_T91q64OutputPin_R51q65OutputPin_R41q66OutputPin_R31rst1InputPin_T71秒表異步清零Rst2InputPin_B134倒計時異步清零四 系統(tǒng)的VHDL設(shè)計源程序：-代碼共372行l(wèi)ibrary ieee;use ieee.std_logic_1164.all;use ieee.std_logic_unsigned.all;entity clock is port( load9,load8,load7,load6,lo

11、ad5,load4,load3,load2,load1:in std_logic; clk,rst1,rst2,en1,en2,key1,key2,key3:in std_logic; q1,q2,q3,q4,q5,q6:out std_logic_vector(6 downto 0);led1,led2,led3,led4,led5:out std_logic );end;architecture a of clock issignal qq1,qq2,qq3,qq4,qq5,qq6:std_logic_vector(3 downto 0);-數(shù)字鐘計數(shù)器信號signal vis1,vis2

12、,vis3,vis4,vis5,vis6:std_logic_vector(3 downto 0);signal cp1,cp2,cp3,cp4,cp5:std_logic;signal p1:integer range 0 to 49;signal p2:integer range 0 to 999;signal p3:integer range 0 to 999;signal clfsa:integer range 0 to 499;signal en,a1,e1,c1,hlfs,l:std_logic;signal clkx,clkx1,clkx2,clkx3,clkx4 : std_l

13、ogic;signal a,b,c,d,e,f,g: std_logic_vector(3 downto 0);-秒表計數(shù)器信號signal r1,r2,r3,r4,r5,r6:std_logic_vector(3 downto 0);-鬧鐘信號signal z1,z2,z3,z4,z5,z6:std_logic_vector(3 downto 0);-倒計時計數(shù)器信號signal alz1,alz2,alz3,alz4,alz5:std_logic; Begin-分頻模塊-process(clk) -分頻1 begin if rising_edge(clk) then if p1=49 th

14、en p1<=0;cp1<='1' else p1<=p1+1;cp1<='0' end if; end if; end process; process(cp1) -分頻2begin if rising_edge(cp1) then if p2=999 then p2<=0;cp2<='1' else p2<=p2+1;cp2<='0' end if; end if; end process; process(cp2) -得到周期為1秒的信號begin if rising_edge

15、(cp2) then if p3=999 then p3<=0;cp3<='1' else p3<=p3+1;cp3<='0' end if; end if; end process;process(cp2) -得到周期為百分之一秒的信號begin if rising_edge(cp2) then if a="1001" then a<="0000"a1<='1' else a<=a+1;a1<='0' end if;end if;end pr

16、ocess;process(cp2) -得到周期為0.5秒的信號begin if rising_edge(cp2) then if clfsa=499 then clfsa<=0;hlfs<='1' else clfsa<=clfsa+1;hlfs<='0' end if; end if; end process;-數(shù)字鐘模塊-process(cp3,load1,key1) -數(shù)字鐘秒鐘計數(shù)器begin if rising_edge(cp3) then if load1='1' then if key1='0

17、9; then -秒鐘手動調(diào)節(jié) if qq2="0101" and qq1="1001" then qq1<="0000" qq2<="0000" elsif qq1="1001" then qq1<="0000"qq2<=qq2+1; else qq1<=qq1+1; end if;end if;else if load1='0' thenif qq2="0101" and qq1="1001&qu

18、ot; then qq1<="0000" qq2<="0000"cp4<='1' elsif qq1="1001" then qq1<="0000"qq2<=qq2+1;cp4<='0' else qq1<=qq1+1;cp4<='0' end if; if qq2="0101" and en='1' then -整點報時case qq1 iswhen "0001"

19、=>led2<='1'when "0011"=>led2<='1'when "0101"=>led2<='1'when "0111"=>led2<='1'when "1001"=>led3<='1'when others =>led2<='0'led3<='0'end case;else led2<='0'

20、led3<='0'end if;end if;end if;end if; end process;process(hlfs,cp4,load2) -數(shù)字鐘分鐘計數(shù)器beginif load2='1' then clkx<=hlfs;else clkx<=cp4;end if; -當load2為高電平時，進行分調(diào)節(jié) if rising_edge(clkx)then if qq4="0101" and qq3="1001" then qq3<="0000" qq4<=&quo

21、t;0000"cp5<='1' elsif qq3="1001" then qq3<="0000"qq4<=qq4+1;cp5<='0' else qq3<=qq3+1;cp5<='0'end if;end if;if qq3="1001" and qq4="0101" then en<='1'else en<='0'end if;end process;process(hlfs

22、,cp5,load1) -數(shù)字鐘時鐘計數(shù)器begin if load3='1' then clkx1<=hlfs;else clkx1<=cp5;end if; -當load3為高電平時，進行小時調(diào)節(jié)if rising_edge(clkx1) then if qq5="0011" and qq6="0010" then qq5<="0000" qq6<="0000" elsif qq5="1001" then qq5<="0000"

23、;qq6<=qq6+1; else qq5<=qq5+1; end if;end if;end process;-鬧鐘模塊-process(hlfs,load5,key1) -鬧鐘秒計數(shù)器begin if rising_edge(hlfs) then if load5='1' then if key1='0' then -手動進行鬧鐘秒設(shè)定 if r2="0101" and r1="1001" then r1<="0000" r2<="0000" elsif

24、r1="1001" then r1<="0000"r2<=r2+1; else r1<=r1+1; end if;end if;end if;end if;end process;process(hlfs,load5,key2) -鬧鐘分計數(shù)器begin if rising_edge(hlfs) then if load5='1' then if key2='0' then -手動進行鬧鐘分設(shè)定 if r4="0101" and r3="1001" then r3&

25、lt;="0000" r4<="0000" elsif r3="1001" then r3<="0000"r4<=r4+1; else r3<=r3+1; end if;end if;end if;end if;end process;process(hlfs,load5,key3) -鬧鐘小時計數(shù)器begin if rising_edge(hlfs) then if load5='1' then if key3='0' then -手動進行鬧鐘小時設(shè)定 if

26、 r6="0010" and r5="0011" then r5<="0000" r6<="0000" elsif r5="1001" then r5<="0000"r6<=r6+1; else r5<=r5+1; end if;end if;end if;end if;end process;process(cp3,qq1,qq2,qq3,qq4,qq5,qq6,r1,r2,r3,r4,r5,r6) -數(shù)字鐘與鬧鐘相符，以LED燈進行提示beg

27、in if rising_edge(cp3) thenif qq3=r3 and qq4=r4 and qq5=r5 and qq6=r6then led1<='1'else led1<='0'end if;end if;end process;-秒表模塊-process(a1,rst1,en1) -秒表計數(shù)器begin if rst1='1' then b<="0000"c<="0000" -秒表異步清零 elsif rising_edge(a1) then if en1='

28、;1' then if b="1001" and c="1001"then b<="0000"c<="0000"c1<='1'elsif b="1001" then b<="0000"c<=c+1;c1<='0'else b<=b+1;c1<='0' end if; end if;end if;end process;process(c1,rst1,en1) beginif

29、 rst1='1' then d<="0000"e<="0000" elsif rising_edge(c1) then if en1='1' then if d="1001" and e="0101"then d<="0000"e<="0000"e1<='1'elsif d="1001" thend<="0000"e<=e+1;e1<=&#

30、39;0' else d<=d+1;e1<='0' end if;end if;end if;end process;process(e1,rst1,en1)beginif rst1='1' then f<="0000"g<="0000" elsif rising_edge(e1) then if en1='1' then if f="1001" and g="0101"then f<="0000"g<=

31、"0000"elsif f="1001" then f<="0000"g<=g+1;else f<=f+1; end if; end if;end if;end process;-倒計時模塊-process(cp3,rst2,en2,clkx2,load7,hlfs) -倒計時計數(shù)器begin if load7='1' then clkx2<=hlfs; else clkx2<=cp3;end if;if rst2='1' then z2<="0000&qu

32、ot;z1<="0000"alz1<='1' -倒計時異步清零 elsif rising_edge(clkx2) then if en2='1' then if z2="0000" and z1="0000"then z2<="0101"z1<="1001"alz1<='1'elsif z1="0000" then z1<="1001"z2<=z2-1;alz1<

33、;='0'else z1<=z1-1;alz1<='0' end if;if alz5='1' then if z1="0001" and z2="0000" then led4<='1'else led4<='0'end if;end if; end if;end if;end process;process(alz1,rst2,en2,load8,clkx3,hlfs)begin if load8='1' then clkx3<

34、;=hlfs;else clkx3<=alz1;end if;if rst2='1' then z4<="0000"z3<="0000"alz2<='1' elsif rising_edge(clkx3) then if z4="0000" and z3="0000"then z4<="0101"z3<="1001"alz2<='1'elsif z3="0000" t

35、hen z3<="1001"z4<=z4-1;alz2<='0'else z3<=z3-1;alz2<='0' end if;if alz4='1' then if z4<="0000" and z3<="0000" then alz5<='1'else alz5<='0'end if; end if;end if;end process;process(clkx4,alz2,rst2,en2,load

36、9,hlfs)begin if load9='1' then clkx4<=hlfs;else clkx4<=alz2;end if;if rst2='1' then z6<="0000"z5<="0000" elsif rising_edge(clkx4) then if z6="0000" and z5="0000"then z6<="0010"z5<="0011"elsif z5="0000&

37、quot; then z5<="1001"z6<=z6-1;else z5<=z5-1; end if;if z5="0000" and z6="0000" then alz4<='1'else alz4<='0'end if; end if;end process;process(z1,z2,z3,z4,z5,z6,hlfs,l)begin if rising_edge(hlfs) then if z1="0000" and z2="0000

38、" and z3="0000" and z4="0000" and z5="0000" and z6="0000" thenl<=not l;else l<='0'end if;end if;led5<=l;end process;-數(shù)據(jù)選擇器，選擇對數(shù)字鐘，秒表，倒計時，鬧鐘其中之一進行譯碼顯示-process(qq1,qq2,qq3,qq4,qq5,qq6,b,c,d,e,f,g,load4,load5,load6,r1,z1,r2,z2,r3,z4,r5,z5,r6

39、,z6) beginif load4='1' then vis1<=b;vis2<=c;vis3<=d;vis4<=e;vis5<=f;vis6<=g;else if load5='1' then vis1<=r1;vis2<=r2;vis3<=r3;vis4<=r4;vis5<=r5;vis6<=r6; elsif load6='1' then vis1<=z1;vis2<=z2;vis3<=z3;vis4<=z4;vis5<=z5;vis6&

40、lt;=z6; else vis1<=qq1;vis2<=qq2;vis3<=qq3;vis4<=qq4;vis5<=qq5;vis6<=qq6;end if;end if;end process;-顯示模塊-process(vis1,vis2,vis3,vis4,vis5,vis6)begincase vis1 iswhen "0000"=>q1<="1000000"when "0001"=>q1<="1111001"when "0010&qu

41、ot;=>q1<="0100100"when "0011"=>q1<="0110000"when "0100"=>q1<="0011001"when "0101"=>q1<="0010010"when "0110"=>q1<="0000010"when "0111"=>q1<="1111000"when &

42、quot;1000"=>q1<="0000000"when "1001"=>q1<="0010000"when others => null;end case;case vis2 iswhen "0000"=>q2<="1000000"when "0001"=>q2<="1111001"when "0010"=>q2<="0100100"wh

43、en "0011"=>q2<="0110000"when "0100"=>q2<="0011001"when "0101"=>q2<="0010010"when "0110"=>q2<="0000010"when "0111"=>q2<="1111000"when "1000"=>q2<="000

44、0000"when "1001"=>q2<="0010000"when others => null;end case;case vis3 iswhen "0000"=>q3<="1000000"when "0001"=>q3<="1111001"when "0010"=>q3<="0100100"when "0011"=>q3<="

45、;0110000"when "0100"=>q3<="0011001"when "0101"=>q3<="0010010"when "0110"=>q3<="0000010"when "0111"=>q3<="1111000"when "1000"=>q3<="0000000"when "1001"=>

46、q3<="0010000"when others => null;end case;case vis4 iswhen "0000"=>q4<="1000000"when "0001"=>q4<="1111001"when "0010"=>q4<="0100100"when "0011"=>q4<="0110000"when "0100"=

47、>q4<="0011001"when "0101"=>q4<="0010010"when "0110"=>q4<="0000010"when "0111"=>q4<="1111000"when "1000"=>q4<="0000000"when "1001"=>q4<="0010000"when other

48、s => null;end case;case vis5 iswhen "0000"=>q5<="1000000"when "0001"=>q5<="1111001"when "0010"=>q5<="0100100"when "0011"=>q5<="0110000"when "0100"=>q5<="0011001"when "0101"=>q5<="0010010"when "0110"=>q5<="0000010"when "0111"=>q5<="1111000"when "1000"=>q5<="0000000"when "1001"=>q5<="