51单片机引脚图 80C51单片机引脚图及引脚功能介绍
80C51\u5355\u7247\u673a\u5f15\u811a\u56fe\u53ca\u5f15\u811a\u529f\u80fd\u4ecb\u7ecd\u672c\u89c6\u9891\u4ecb\u7ecd\u4e8689C52\u7684\u5f15\u811a\u529f\u80fd\u548c\u5f15\u811a\u4ecb\u7ecd\u3002
\u3000\u3000\u5355\u7247\u673a\u768440\u4e2a\u5f15\u811a\u5927\u81f4\u53ef\u5206\u4e3a4\u7c7b\uff1a\u7535\u6e90\u3001\u65f6\u949f\u3001\u63a7\u5236\u548cI/O\u5f15\u811a\u3002
\u3000\u3000\u2488 \u7535\u6e90:
\u3000\u3000\u2474 VCC - \u82af\u7247\u7535\u6e90\uff0c\u63a5+5V\uff1b
\u3000\u3000\u2475 VSS - \u63a5\u5730\u7aef\uff1b
\u3000\u3000\u2489 \u65f6\u949f:
\u3000\u3000XTAL1\u3001XTAL2 - \u6676\u4f53\u632f\u8361\u7535\u8def\u53cd\u76f8\u8f93\u5165\u7aef\u548c\u8f93\u51fa\u7aef\u3002
\u3000\u3000\u248a \u63a7\u5236\u7ebf:\u63a7\u5236\u7ebf\u5171\u67094\u6839\uff0c
\u3000\u3000\u2474 ALE/PROG:\u5730\u5740\u9501\u5b58\u5141\u8bb8/\u7247\u5185EPROM\u7f16\u7a0b\u8109\u51b2 \u2460 ALE\u529f\u80fd\uff1a\u7528\u6765\u9501\u5b58P0\u53e3\u9001\u51fa\u7684\u4f4e8\u4f4d\u5730\u5740
\u3000\u3000\u2461 PROG\u529f\u80fd\uff1a\u7247\u5185\u6709EPROM\u7684\u82af\u7247\uff0c\u5728EPROM\u7f16\u7a0b\u671f\u95f4\uff0c\u6b64\u5f15\u811a\u8f93\u5165\u7f16\u7a0b\u8109\u51b2\u3002
\u3000\u3000\u2475 PSEN:\u5916ROM\u8bfb\u9009\u901a\u4fe1\u53f7\u3002
\u3000\u3000\u2476 RST/VPD:\u590d\u4f4d/\u5907\u7528\u7535\u6e90\u3002
\u3000\u3000\u2460 RST\uff08Reset\uff09\u529f\u80fd\uff1a\u590d\u4f4d\u4fe1\u53f7\u8f93\u5165\u7aef\u3002
\u3000\u3000\u2461 VPD\u529f\u80fd\uff1a\u5728Vcc\u6389\u7535\u60c5\u51b5\u4e0b\uff0c\u63a5\u5907\u7528\u7535\u6e90\u3002
\u3000\u3000\u2477 EA/Vpp:\u5185\u5916ROM\u9009\u62e9/\u7247\u5185EPROM\u7f16\u7a0b\u7535\u6e90\u3002
\u3000\u3000\u2460 EA\u529f\u80fd\uff1a\u5185\u5916ROM\u9009\u62e9\u7aef\u3002
\u3000\u3000\u2461 Vpp\u529f\u80fd\uff1a\u7247\u5185\u6709EPROM\u7684\u82af\u7247\uff0c\u5728EPROM\u7f16\u7a0b\u671f\u95f4\uff0c\u65bd\u52a0\u7f16\u7a0b\u7535\u6e90Vpp\u3002
\u3000\u3000\u248b I/O\u7ebf
\u3000\u300080C51\u5171\u67094\u4e2a8\u4f4d\u5e76\u884cI/O\u7aef\u53e3\uff1aP0\u3001P1\u3001P2\u3001P3\u53e3\uff0c\u517132\u4e2a\u5f15\u811a\u3002 P3\u53e3\u8fd8\u5177\u6709\u7b2c\u4e8c\u529f\u80fd\uff0c\u7528\u4e8e\u7279\u6b8a\u4fe1\u53f7\u8f93\u5165\u8f93\u51fa\u548c\u63a7\u5236\u4fe1\u53f7\uff08\u5c5e\u63a7\u5236\u603b\u7ebf\uff09\u3002P0\u53e3\u8f93\u5165\u65f6\u9700\u8981\u63a5\u4e0a\u62c9\u7535\u963b\u624d\u80fd\u7f6e1\uff1a
绛旓細鐢垫簮鐢佃矾涓帴鍏ヤ簡鐢垫簮鎸囩ずLED锛屽浘涓璕11涓篖ED鐨勯檺娴佺數闃伙紝S1 涓虹數婧愬紑鍏炽傚浣嶇數璺敱鎸夐敭澶嶄綅鍜屼笂鐢靛浣嶄袱閮ㄥ垎缁勬垚銆 涓婄數澶嶄綅锛歋TC89绯诲垪鍗曠墖鍙婁负楂樼數骞冲浣嶏紝閫氬父鍦ㄥ浣寮曡剼RST涓婅繛鎺ヤ竴涓數瀹瑰埌VCC锛屽啀杩炴帴涓涓數闃诲埌GND锛岀敱姝ゅ舰鎴愪竴涓猂C鍏呮斁鐢靛洖璺繚璇鍗曠墖鏈鍦ㄤ笂鐢垫椂RST鑴氫笂鏈夎冻澶熸椂闂寸殑楂樼數骞宠繘琛屽浣...
绛旓細鍗曠墖鏈哄浣嶇數璺涓嬪浘锛氬浣嶇數璺殑宸ヤ綔鍘熺悊 鍦ㄤ功鏈笂鏈変粙缁嶏紝51鍗曠墖鏈瑕佸浣嶅彧闇瑕佸湪绗9寮曡剼鎺ヤ釜楂樼數骞虫寔缁2US灏卞彲浠ュ疄鐜帮紝閭ｈ繖涓繃绋嬫槸濡備綍瀹炵幇鐨勫憿锛熷湪鍗曠墖鏈虹郴缁熶腑锛岀郴缁熶笂鐢靛惎鍔ㄧ殑鏃跺欏浣嶄竴娆★紝褰撴寜閿寜涓嬬殑鏃跺欑郴缁熷啀娆″浣嶏紝濡傛灉閲婃斁鍚庡啀鎸変笅锛岀郴缁熻繕浼氬浣嶃傛墍浠ュ彲浠ラ氳繃鎸夐敭鐨勬柇寮鍜岄棴鍚堝湪杩愯鐨...
绛旓細51鍗曠墖鏈哄紩鑴鍒嗕负锛1銆佷富鐢垫簮寮曡剼锛歏ss,Vcc 2銆佸鎺ユ櫠鎸紩鑴氾細XTAL1锛孹TAL2 3銆佹帶鍒跺紩鑴氾細RST/VPD锛孉LE/PROG锛孭SEN锛孍A/VPP 4銆佽緭鍏ヨ緭鍑篒O寮曡剼銆傝繍绠楀櫒 杩愮畻鍣ㄧ敱杩愮畻閮ㄤ欢鈥斺旂畻鏈昏緫鍗曞厓锛圓rithmetic & Logical Unit锛岀畝绉癆LU锛夈佺疮鍔犲櫒鍜屽瘎瀛樺櫒绛夊嚑閮ㄥ垎缁勬垚銆侫LU鐨勪綔鐢ㄦ槸鎶婁紶鏉ョ殑鏁版嵁杩涜绠楁湳鎴...
绛旓細澶嶄綅鐢佃矾鐢ㄤ簬灏鍗曠墖鏈鍐呴儴鍚勭數璺殑鐘舵佹仮澶嶅埌涓涓‘瀹氱殑鍒濆鍊,骞朵粠杩欎釜鐘舵佸紑濮嬪伐浣溿俓x0d\x0a鍗曠墖鏈虹殑澶嶄綅鏉′欢:蹇呴』浣垮叾RST寮曡剼涓婃寔缁嚭鐜颁袱涓(鎴栦互涓)鏈哄櫒鍛ㄦ湡鐨勯珮鐢靛钩銆俓x0d\x0a鍗曠墖鏈虹殑澶嶄綅褰㈠紡:涓婄數澶嶄綅銆佹寜閿浣嶃備笂鐢靛浣嶅拰鎸夐敭澶嶄綅鐢佃矾濡備笅銆俓x0d\x0a\x0d\x0a鍥2-9 鍗曠墖鏈哄浣嶇數璺痋x...
绛旓細51鍗曠墖鏈鐨寮曡剼闅忓閮藉彲浠ユ煡鍒帮紝P0銆丳1銆丳2闅忎究閫夋嫨涓涓綔涓鸿剦鍐插彂閫佸彛锛屽湪绋嬪簭寮濮嬪墠瀹氫箟濂藉氨鍙紝椹卞姩鍣ㄤ竴鑸兘浼氬垎閰嶈剦鍐诧紝鐪嬩綘鐢ㄧ殑鏄摢涓绉嶏紝鏈夌殑椹卞姩鍣ㄦ湁鐢垫祦鍙皟妗ｏ紝涔熷氨鏄浉鐢垫祦缁嗗垎銆傚悗鏉ラ殢鐫Flash rom鎶鏈殑鍙戝睍锛8004鍗曠墖鏈哄彇寰椾簡闀胯冻鐨勮繘灞曪紝鎴愪负搴旂敤鏈骞挎硾鐨8浣嶅崟鐗囨満涔嬩竴锛屽叾浠ｈ〃鍨嬪彿鏄疉TMEL...
绛旓細鎴戞槸涓鍚嶅崟鐗囨満宸ョ▼甯堬紝涓嬮潰鐨勮瑙ｄ綘鍙傝冧竴涓..51鍗曠墖鏈鍏辨湁40鍙寮曡剼锛庝笅闈㈣繖涓氨鏄渶灏忕郴缁熷師鐞嗗浘锛屽氨鏄潬杩欏洓涓儴鍒嗭紝杩欎釜鍗曠墖鏈哄氨鍙互杩愯璧锋潵浜嗭紟(鐪嬩笅闈㈢殑鏁板瓧鏍囪锛1234)..鎴戜滑鏉ヤ竴锛屼竴璁茶В涓涓嬶細1 绗竴閮ㄥ垎锛氱數婧愮粍(鏍囪涓1鐨勯儴鍒).40鑴氭帴鐢垫簮5V(鍙充笂瑙)锛20鑴氭帴鐢垫簮璐熸瀬(宸︿笅瑙)锛屽湪...
绛旓細涓銆丳0鍙ｏ細鐪熸鐨勫弻鍚戝彛锛岃緭鍑洪攣瀛橈紝杈撳叆缂撳啿锛岃緭鍏ュ墠瑕佸厛缃1锛圞EIL鍖呭惈鐨勫ご鏂囦欢宸茬粡鏈夊姩浣滀簡锛屽鏋滅敤姹囩紪锛岃浜哄伐缃1锛夛紝杈撳嚭涓烘紡鏋佸紑璺紝杈撳嚭涓鑸兘瑕佷笂鎷夌數闃汇傝緭鍏ヤ负楂橀樆鎬侊紝鑳介┍鍔8涓猅TL璐熻浇銆傚綋鏈夌墖澶栧瓨鍌ㄥ櫒鏃讹紝浣滄暟鎹嚎浣跨敤銆備簩銆丳1鍙ｏ細鏈绠鍗曠殑鍙ｏ紝杈撳叆涔熻鍏堢疆1锛屾棤楂橀樆鎬侊紝鍙兘鏄緭鍑...
绛旓細51鍗曠墖鏈哄紩鑴鍒嗕负锛1銆佷富鐢垫簮寮曡剼锛歏ss,Vcc 2銆佸鎺ユ櫠鎸紩鑴氾細XTAL1锛孹TAL2 3銆佹帶鍒跺紩鑴氾細RST/VPD锛孉LE/PROG锛孭SEN锛孍A/VPP 4銆佽緭鍏ヨ緭鍑篒O寮曡剼銆傝繍绠楀櫒 杩愮畻鍣ㄧ敱杩愮畻閮ㄤ欢鈥斺旂畻鏈昏緫鍗曞厓锛圓rithmetic & Logical Unit锛岀畝绉癆LU锛夈佺疮鍔犲櫒鍜屽瘎瀛樺櫒绛夊嚑閮ㄥ垎缁勬垚銆侫LU鐨勪綔鐢ㄦ槸鎶婁紶鏉ョ殑鏁版嵁杩涜绠楁湳鎴...
绛旓細濡傛灉鎺у埗鐢垫祦涓嶅ぇ锛< 2A~3A ) 鍙互鐢ㄥ乏鍥, R5+LED1 鍙互鎹㈡垚闇瑕佹帶鍒剁殑 璐熻浇,鐢靛帇鏍规嵁璐熻浇鐢靛帇銆傚鏋滄帶鍒剁數娴佹瘮杈冨ぇ锛> 3A ) 鍙互鐢ㄥ彸鍥, R5+LED1+LED2+LED3 鍙互鎹㈡垚闇瑕佹帶鍒剁殑 璐熻浇,鐢靛帇鏍规嵁璐熻浇鐢靛帇銆傛敞鎰弇os绠＄殑 g鏋 鐢靛帇 涓嶅彲浠 楂樹簬 20 V....
绛旓細EA寮曡剼琛ㄧず瀛樺彇澶栭儴绋嬪簭浠ｇ爜涔嬫剰锛屼綆鐢靛钩鍔ㄤ綔锛屽綋姝ゅ紩鑴氭帴浣庣數骞冲悗锛岀郴缁熶細鍙栫敤澶栭儴鐨勭▼搴忎唬鐮侊紙瀛樹簬澶栭儴EPROM涓級鏉ユ墽琛岀▼搴忋侲A寮曡剼蹇呴』鎺ヤ綆鐢靛钩锛屽洜涓哄叾鍐呴儴鏃犵▼搴忓瓨鍌ㄥ櫒绌洪棿銆傝ˉ鍏咃細80C51鍗曠墖鏈灞炰簬MCS-51绯诲垪鍗曠墖鏈猴紝鐢盜ntel鍏徃寮鍙戯紝鍏剁粨鏋勬槸8048鐨勫欢浼革紝鏀硅繘浜8048鐨勭己鐐癸紝澧炲姞浜嗗涔橈紙MUL锛夈侀櫎锛...
