mcs-51单片机的串行通信接口有4种工作方式，它们都是实现串口通信功能的吗 mcs—51单片机的串行口有哪几种工作方式
MCS-51\u5355\u7247\u673a\u7684\u4e32\u884c\u63a5\u53e3\u6709\u51e0\u79cd\u5de5\u4f5c\u65b9\u5f0f?\u8bf7\u7b80\u8ff0\u5404\u79cd\u65b9\u5f0f\u7684\u529f\u80fd.89\u7cfb\u5217\u5355\u7247\u673a\u7684\u4e32\u884c\u901a\u4fe1\u67094\u79cd\u5de5\u4f5c\u65b9\u5f0f\uff1a
\u65b9\u5f0f0\u662f\u540c\u6b65\u79fb\u4f4d\u5bc4\u5b58\u5668\u65b9\u5f0f\uff0c\u5e27\u683c\u5f0f8\u4f4d\uff0c\u6ce2\u7279\u7387\u56fa\u5b9a\u4e3afosc/12\u3002
\u65b9\u5f0f1\u662f8\u4f4d\u5f02\u6b65\u901a\u4fe1\u65b9\u5f0f\uff0c\u5e27\u683c\u5f0f10\u4f4d\uff0c\u6ce2\u7279\u7387\u53ef\u53d8\uff1aT\u6ea2\u51fa\u7387/n(n= :32\u621616)\u3002
\u65b9\u5f0f2\u662f9\u4f4d\u5f02\u6b65\u901a\u4fe1\u65b9\u5f0f\uff0c\u5e27\u683c\u5f0f11\u4f4d\uff0c\u6ce2\u7279\u7387\u56fa\u5b9a\uff1a fosc/n(n=32 \u621616)\u3002
\u65b9\u5f0f3\u662f9\u4f4d\u5f02\u6b65\u901a\u4fe1\u65b9\u5f0f\uff0c\u5e27\u683c\u5f0f11\u4f4d\uff0c\u6ce2\u7279\u7387\u53ef\u53d8\uff1aT\u6ea2\u51fa\u7387(m=32\u621616)\u3002
\u65b9\u5f0f1\u30012\u30013\u7684\u533a\u522b\u4e3b\u8981\u8868\u73b0\u5728\u5e27\u683c\u5f0f\u53ca\u6ce2\u7279\u7387\u4e24\u4e2a\u65b9\u9762\u3002
\u6269\u5c55\u8d44\u6599
\u65b9\u5f0f0\u548c\u65b9\u5f0f2\u7684\u6ce2\u7279\u7387\u662f\u56fa\u5b9a\u7684\uff0c\u90fd\u662f\u7531\u5355\u7247\u673a\u65f6\u949f\u8109\u51b2\u7ecf\u76f8\u5173\u63a7\u5236\u7535\u8def\u5904\u7406\u540e\u83b7\u5f97\u3002\u5176\u4e2d\u65b9\u5f0f0\u7684\u6ce2\u7279\u7387\u5b8c\u5168\u53d6\u51b3\u4e8e\u7cfb\u7edf\u65f6\u949f\u9891\u7387fosc\u7684\u9ad8\u4f4e\uff0c\u4e0d\u53d7\u5176\u4ed6\u56e0\u7d20\u5f71\u54cd\uff1b\u800c\u65b9\u5f0f2\u7684\u6ce2\u7279\u7387\u8fd8\u53d7SMOD(PCON.7)\u72b6\u6001\u63a7\u5236\u3002\u5f53SMOD=1\u65f6\uff0c\u4e3afosc/32\uff0c SMOD=0\u65f6\u4e3afosc/64\u3002
\u65b9\u5f0f1\u548c\u65b9\u5f0f3\u7684\u6ce2\u7279\u7387\u662f\u53ef\u53d8\u7684\uff0c\u901a\u5e38\u4f7f\u7528\u5355\u7247\u673a\u4e2d\u7684\u5b9a\u65f6\u5668T1\u5de5\u4f5c\u5728\u5176\u65b9\u5f0f2 (\u81ea\u52a8\u91cd\u88c5\u521d\u503c\u65b9\u5f0f)\u4f5c\u4e3a\u6ce2\u7279\u7387\u53d1\u751f\u5668\u4f7f\u7528\uff0c\u4ee5\u4ea7\u751f\u6240\u9700\u7684\u6ce2\u7279\u7387\u4fe1\u53f7\u3002
K\u4e3a\u5b9a\u65f6\u5668T1\u7684\u4f4d\u6570\uff0c\u4e0e\u5176\u5de5\u4f5c\u65b9\u5f0f\u6709\u5173(\u65b9\u5f0f0\uff0cK=13; \u65b9\u5f0f1\uff0cK=16;\u65b9\u5f0f2\uff0cK=8)\u3002 \u7531\u6ce2\u7279\u7387\u8ba1\u7b97\u516c\u5f0f\u53ef\u77e5\uff0c\u65b9\u5f0f1\u548c\u65b9\u5f0f3\u4e0b\u6ce2\u7279\u7387\u53d7fosc\u3001SMOD\u3001T1\u5de5\u4f5c\u65b9\u5f0f\u4ee5\u53caT1\u521d\u503c\u7b49\u591a\u79cd\u56e0\u7d20\u5f71\u54cd\u3002
\u901a\u5e38\u662f\u5728fosc\u3001SMOD\u548cT1\u5de5\u4f5c\u65b9\u5f0f\u9009\u5b9a\u60c5\u51b5\u4e0b\uff0c\u901a\u8fc7\u8c03\u6574T1\u521d\u503c(\u5373\u8c03\u6574T1\u7684\u6ea2\u51fa\u7387)\u7684\u65b9\u5f0f\u6765\u6539\u53d8\u6ce2\u7279\u7387\u3002
1\u3001\u7acb\u5373\u5bfb\u5740\uff1a\u64cd\u4f5c\u6570\u5c31\u5199\u5728\u6307\u4ee4\u4e2d\uff0c\u548c\u64cd\u4f5c\u7801\u4e00\u8d77\u653e\u5728\u7a0b\u5e8f\u5b58\u8d2e\u5668\u4e2d\u3002\u628a\u201c\uff03\u201d\u53f7\u653e\u5728\u7acb\u5373\u6570\u524d\u9762\uff0c\u4ee5\u8868\u793a\u8be5\u5bfb\u5740\u65b9\u5f0f\u4e3a\u7acb\u5373\u5bfb\u5740\uff0c\u5982movA\uff0c\uff0320H\u3002
2\u3001\u5bc4\u5b58\u5668\u5bfb\u5740\uff1a\u64cd\u4f5c\u6570\u653e\u5728\u5bc4\u5b58\u5668\u4e2d\uff0c\u5728\u6307\u4ee4\u4e2d\u76f4\u63a5\u4ee5\u5bc4\u5b58\u5668\u7684\u540d\u6765\u8868\u793a\u64cd\u4f5c\u6570\u5730\u5740\u3002\u5982MOVA\uff0cR0\u5c31\u5c5e\u4e8e\u5bc4\u5b58\u5668\u5bfb\u5740\uff0c\u5373R0\u5bc4\u5b58\u5668\u7684\u5185\u5bb9\u9001\u5230\u7d2f\u52a0\u5668A\u4e2d\u3002
3\u3001\u76f4\u63a5\u5bfb\u5740\uff1a\u64cd\u4f5c\u6570\u653e\u5728\u5355\u7247\u673a\u7684\u5185\u90e8RAM\u67d0\u5355\u5143\u4e2d\uff0c\u5728\u6307\u4ee4\u4e2d\u76f4\u63a5\u5199\u51fa\u8be5\u5355\u5143\u7684\u5730\u5740\u3002\u5982\u524d\u4f8b\u7684ADDA\uff0c70H\u4e2d\u768470H\u3002
4\u3001\u5bc4\u5b58\u5668\u95f4\u63a5\u5bfb\u5740\uff1a\u64cd\u4f5c\u6570\u653e\u5728RAM\u67d0\u4e2a\u5355\u5143\u4e2d\uff0c\u8be5\u5355\u5143\u7684\u5730\u5740\u53c8\u653e\u5728\u5bc4\u5b58\u5668R0\u6216R1\u4e2d\u3002\u5982\u679cRAM\u7684\u5730\u5740\u5927\u4e8e256\uff0c\u5219\u8be5\u5730\u5740\u5b58\u653e\u572816\u4f4d\u5bc4\u5b58\u5668DPTR\uff08\u6570\u636e\u6307\u9488\uff09\u4e2d\uff0c\u6b64\u65f6\u5728\u5bc4\u5b58\u5668\u540d\u524d\u52a0\uff20\u7b26\u53f7\u6765\u8868\u793a\u8fd9\u79cd\u95f4\u63a5\u5bfb\u5740\u3002\u5982MOVA\uff0c\uff20R0\u3002
5\u3001\u53d8\u5740\u5bfb\u5740\uff1a\u6307\u5b9a\u7684\u53d8\u5740\u5bc4\u5b58\u5668\u7684\u5185\u5bb9\u4e0e\u6307\u4ee4\u4e2d\u7ed9\u51fa\u7684\u504f\u79fb\u91cf\u76f8\u52a0\uff0c\u6240\u5f97\u7684\u7ed3\u679c\u4f5c\u4e3a\u64cd\u4f5c\u6570\u7684\u5730\u5740\u3002\u5982MOVCA\uff0c\uff20A\uff0bDPTR\u3002
6\u3001\u76f8\u5bf9\u5bfb\u5740\uff1a\u7531\u7a0b\u5e8f\u8ba1\u6570\u5668\u4e2d\u7684\u57fa\u5730\u5740\u4e0e\u6307\u4ee4\u4e2d\u63d0\u4f9b\u7684\u504f\u79fb\u91cf\u76f8\u52a0\uff0c\u5f97\u5230\u7684\u4e3a\u64cd\u4f5c\u6570\u7684\u5730\u5740\u3002\u5982SJMPrel\u3002
7\u3001\u4f4d\u5bfb\u5740\uff1a\u64cd\u4f5c\u6570\u662f\u4e8c\u8fdb\u5236\u4e2d\u7684\u67d0\u4e00\u4f4d\uff0c\u5176\u4f4d\u5730\u5740\u51fa\u73b0\u5728\u6307\u4ee4\u4e2d\u3002\u5982SETBbit\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u5355\u7247\u673a\u7684\u786c\u4ef6\u7279\u6027\uff1a
1\u3001\u4e3b\u6d41\u5355\u7247\u673a\u5305\u62ecCPU\u30014KB\u5bb9\u91cf\u7684RAM\u3001128 KB\u5bb9\u91cf\u7684ROM\u3001 2\u4e2a16\u4f4d\u5b9a\u65f6/\u8ba1\u6570\u5668\u30014\u4e2a8\u4f4d\u5e76\u884c\u53e3\u3001\u5168\u53cc\u5de5\u4e32\u53e3\u884c\u53e3\u3001ADC/DAC\u3001SPI\u3001I2C\u3001ISP\u3001IAP\u3002
2\u3001\u7cfb\u7edf\u7ed3\u6784\u7b80\u5355\uff0c\u4f7f\u7528\u65b9\u4fbf\uff0c\u5b9e\u73b0\u6a21\u5757\u5316\u3002
3\u3001\u5355\u7247\u673a\u53ef\u9760\u6027\u9ad8\uff0c\u53ef\u5de5\u4f5c\u523010^6 ~10^7\u5c0f\u65f6\u65e0\u6545\u969c\u3002
4\u3001\u5904\u7406\u529f\u80fd\u5f3a\uff0c\u901f\u5ea6\u5feb\u3002
5\u3001\u4f4e\u7535\u538b\uff0c\u4f4e\u529f\u8017\uff0c\u4fbf\u4e8e\u751f\u4ea7\u4fbf\u643a\u5f0f\u4ea7\u54c1\u3002
6\u3001\u63a7\u5236\u529f\u80fd\u5f3a\u3002
7\u3001\u73af\u5883\u9002\u5e94\u80fd\u529b\u5f3a\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-MCS51
其他三个是串口，只是每次通讯的数据位数或波特率不同而已
绛旓細鏈甯哥敤鐨勬槸RS232涓插彛锛岃繖鏍鍗曠墖鏈鍙互鍜岀數鑴戣繘琛屼覆琛閫氫俊锛岀數鑴戜笂灏辨湁RS232涓插彛锛屽嵆COM鍙ｃ傝鎺ユ垚RS232鎺ュ彛锛屽崟鐗囨満闇瑕佷竴鐗嘡S232鎺ュ彛鑺墖锛屽MAX202锛屾垨MAX232绛夈備篃鏄敤鍗曠墖鏈虹殑RXD锛孴XD涓や釜鑴氥俁S485鎺ュ彛锛屼篃闇瑕佷竴鐗嘡S485鑺墖銆傚悓鏍蜂篃鏄敤鍗曠墖鏈篟XD锛孴XD銆
绛旓細鍏ㄥ弻宸鐨勪覆琛岄氫俊鍙ｃMCS-51鍗曠墖鏈鍐呴儴鏈変竴涓叏鍙屽伐鐨勪覆琛岄氫俊鍙ｏ紝鍗充覆琛屾帴鏀跺拰鍙戦佺紦鍐插櫒锛圫BUF锛夛紝杩欎袱涓湪鐗╃悊涓婄嫭绔嬬殑鎺ユ敹鍙戦佸櫒锛屾棦鍙互鎺ユ敹鏁版嵁涔熷彲浠ュ彂閫佹暟鎹備絾鎺ユ敹缂撳啿鍣ㄥ彧鑳借鍑轰笉鑳藉啓鍏ワ紝鑰屽彂閫佺紦鍐插櫒鍒欏彧鑳藉啓鍏ヤ笉鑳借鍑猴紝鍦板潃涓99H銆傝繖涓氫俊鍙ｆ棦鍙互鐢ㄤ簬缃戠粶閫氫俊锛屼害鍙疄鐜颁覆琛屽紓姝ラ氫俊锛岃繕...
绛旓細MCS-51鍗曠墖鏈虹殑涓茶鎺ュ彛鏈夛紙4锛夌宸ヤ綔鏂瑰紡鍏朵腑鏂瑰紡锛3锛変负澶氭満閫氳鏂瑰紡8051鍚勪腑鏂簮鐨勪腑鏂姹傛槸灞炰簬浠涔堢骇鍒槸鐢憋紙IE锛夊瘎瀛樺櫒鐨勫唴瀹瑰喅瀹氱殑鍐冲畾绋嬪簭鎵ц椤哄簭鐨勫瘎瀛樺櫒鏄紙PC锛夛紝瀹冪殑鏈澶у鍧鑼冨洿鏄紙64K锛夈侾C鐨勫兼槸锛堢▼搴忚繍琛屽綋鍓嶏級鐨勫湴鍧銆侾0鍙ｅ綋涓嶄綔绯荤粺鎵╁睍鏃讹紝鍙綔锛圛O锛変娇鐢ㄣ傚綋浣滅郴缁熸墿灞曟椂锛孭0...
绛旓細鏍囧噯MCS锛51鍗曠墖鏈鍏锋湁1涓覆琛屾帴鍙ｏ紱鍏跺彉绉嶆湁鍙屼覆鍙ｇ殑锛屽吀鍨嬬殑鏄崕閭77E58锛汻I鍜孴I鏄叡鐢ㄤ竴涓腑鏂簮鐨勶紝鍏ュ彛鍦板潃鏄0x0023锛51鍗曠墖鏈轰腑鐨勫伐浣滃瘎瀛樺櫒涓紝鍙湁R0鍜孯1鍙互闂存帴瀵诲潃銆
绛旓細涓茶鎬荤嚎锛屽嵆閫愪綅浼犺緭浜岃繘鍒舵暟鎹殑绯荤粺锛岄氳繃鍗曟牴鏁版嵁绾垮疄鐜拌澶囬棿鐨閫氫俊銆傛瘡鏉℃暟鎹鎷嗗垎涓哄瓧鑺傦紝鍖呭惈璧峰浣嶃佹暟鎹綅鍜屽仠姝綅锛岀‘淇濇暟鎹殑鏈夊簭浼犺緭銆傝繖绉嶆妧鏈厑璁51鍗曠墖鏈轰笌浼犳劅鍣ㄣ佹樉绀哄睆銆佸瓨鍌ㄨ澶囦箖鑷崇綉缁滄帴鍙ｇ瓑浼楀澶栬鏃犵紳瀵规帴銆備笁澶т富娴佸崗璁В鏋 鍦51鍗曠墖鏈虹殑涓栫晫閲岋紝涓茶鎬荤嚎鍗忚鍚勬湁鍗冪锛欼2C鎬荤嚎 - ...
绛旓細51 鍗曠墖鏈 鍢 TTL 鐢靛钩 鐨 3绾 涓插彛
绛旓細1銆佺珛鍗冲鍧锛氭搷浣滄暟灏卞啓鍦ㄦ寚浠や腑锛屽拰鎿嶄綔鐮佷竴璧锋斁鍦ㄧ▼搴忓瓨璐櫒涓傛妸鈥滐純鈥濆彿鏀惧湪绔嬪嵆鏁板墠闈紝浠ヨ〃绀鸿瀵诲潃鏂瑰紡涓虹珛鍗冲鍧锛屽movA锛岋純20H銆2銆佸瘎瀛樺櫒瀵诲潃锛氭搷浣滄暟鏀惧湪瀵勫瓨鍣ㄤ腑锛屽湪鎸囦护涓洿鎺ヤ互瀵勫瓨鍣ㄧ殑鍚嶆潵琛ㄧず鎿嶄綔鏁板湴鍧銆傚MOVA锛孯0灏卞睘浜庡瘎瀛樺櫒瀵诲潃锛屽嵆R0瀵勫瓨鍣ㄧ殑鍐呭閫佸埌绱姞鍣ˋ涓3銆佺洿鎺ュ鍧锛...
绛旓細89绯诲垪鍗曠墖鏈虹殑涓茶閫氫俊鏈4绉嶅伐浣滄柟寮忥細鏂瑰紡0鏄悓姝ョЩ浣嶅瘎瀛樺櫒鏂瑰紡锛屽抚鏍煎紡8浣嶏紝娉㈢壒鐜囧浐瀹氫负fosc/12銆傛柟寮1鏄8浣嶅紓姝ラ氫俊鏂瑰紡锛屽抚鏍煎紡10浣嶏紝娉㈢壒鐜囧彲鍙橈細T婧㈠嚭鐜/n(n= :32鎴16)銆傛柟寮2鏄9浣嶅紓姝ラ氫俊鏂瑰紡锛屽抚鏍煎紡11浣嶏紝娉㈢壒鐜囧浐瀹氾細 fosc/n(n=32 鎴16)銆傛柟寮3鏄9浣嶅紓姝ラ氫俊鏂瑰紡锛屽抚鏍煎紡11浣嶏紝...
绛旓細杩欎釜涓嶅叏鏄紝涓插彛鏂瑰紡0鏄綔涓哄悓姝ヤ互涓哄瘎瀛樺櫒浣跨敤鐨勶紝浣犵敤瀹冨彲浠ユā鎷烻PI 浣滀负涓绘満銆傚叾浠栦笁涓槸涓插彛锛屽彧鏄瘡娆閫氳鐨勬暟鎹綅鏁版垨娉㈢壒鐜囦笉鍚岃屽凡
绛旓細鍙娇 MCS-51 鍗曠墖鏈轰覆琛鍙ｉ傜敤浜庡鏈閫氫俊銆傛柟寮 2 鐨勬尝鐗圭巼鍥哄畾锛屽彧鏈変袱绉嶉夋嫨锛屼负鎸崱鐜囩殑 1/64 鎴 1/32 锛屽彲鐢 PCON 鐨勬渶楂樹綅閫夋嫨銆傛柟寮 3 锛氭柟寮 3 涓庢柟寮 2 瀹屽叏绫讳技锛屽敮涓鐨勫尯鍒槸鏂瑰紡 3 鐨勬尝鐗圭巼鏄彲鍙樼殑銆傝屽抚鏍煎紡涓庢柟寮 2- 鏍蜂负 11 浣嶄竴甯с傛墍浠ユ柟寮 3 涔熼傚悎浜庡鏈洪氫俊銆
