微型計算機控制技術(shù)課件 第二章 微型計算機接口技術(shù)_ppt.txt

1、絎簩绔?寰瀷璁＄畻鏈烘帴鍙ｆ妧鏈?2.1DA杞崲鍣?2.2MCS51鍜孌A杞崲鍣ㄧ殑鎺ュ彛2.3AD杞崲鍣?2.4MCS51鍜孉D杞崲鍣ㄧ殑鎺ュ彛2.5鏁版嵁鐨勯噰鏍峰強淇濇寔2.6甯哥敤杈撳嚭椹卞姩鐢?shù)璧\鍦ㄥ井鏈虹殑鍚勭鎺ュ彛涓紝瀹屾垚澶栬淇″彿鍒板井鏈烘墍闇€鏁板瓧淇″彿杞崲鐨勶紝縐頒負(fù)妯?℃嫙鈭曟暟瀛楄漿鎹紙?AD杞崲錛夊櫒錛涘畬鎴愬井鏈鴻緭鍑烘暟瀛椾俊鍙峰埌澶栬鎵€闇€淇″彿杞崲鐨勶紝縐頒負(fù)鏁板瓧鈭曟ā鎷

2、熻漿鎹紙?DA杞崲錛夊櫒銆?DA杞崲鍣?紙DigitaltoAnalogConverter錛夋槸涓€縐嶈兘鎶婃暟瀛楅噺杞崲鎴愭ā鎷熼噺鐨勭數(shù)瀛愬櫒浠訛紱AD杞崲鍣?紙AnalogtoDigitalConverter錛夊垯鐩稿弽錛屽畠鑳芥妸妯℃嫙閲忚漿鎹㈡垚鐩稿簲鐨勬暟瀛楅噺銆傚湪寰満鎺у埗緋葷粺涓紝緇忓父瑕佺敤鍒癆D鍜孌A杞崲鍣ㄣ€傚畠浠殑鍔熻兘鍙婂湪瀹炴椂鎺у埗緋葷粺涓殑鍦頒綅錛屽?鍥?1鎵€紺恒€?鍥?1鍗曠墖鏈哄

3、拰琚帶瀹炰綋闂寸殑鎺ュ彛紺烘剰榪斿洖鏈珷棣栭〉2.1DA杞崲鍣?2.1.1DA杞崲鍣ㄧ殑鍘熺悊2.1.2DA杞崲鍣ㄧ殑鎬ц兘鎸囨爣2.1.3鍏稿瀷鐨凞A杞崲鍣ㄨ姱鐗嘍AC0832榪斿洖鏈珷棣栭〉2.1.1DA杞崲鍣ㄧ殑鍘熺悊DA杞崲鍣ㄦ湁騫惰?鍜屼覆琛屼袱縐嶏紝鍦ㄥ伐涓氭帶鍒朵腑錛屼富瑕佷嬌鐢ㄥ茍琛孌A杞崲鍣ㄣ€侱A杞崲鍣ㄧ殑鍘熺悊鍙互褰掔撼涓衡€滄寜鏉冨睍寮€錛岀劧鍚庣浉鍔犫€濄€傚洜姝わ紝DA杞崲鍣ㄥ唴閮ㄥ

4、繀欏昏鏈変竴涓?В鐮佺綉緇滐紝浠ュ疄鐜版寜鏉冨€煎垎鍒繘琛孌A杞崲銆?瑙ｇ爜緗戠粶閫氬父鏈変袱縐嶏細(xì)浜岃繘鍒跺姞鏉冪數(shù)闃葷綉緇滃拰T鍨嬬數(shù)闃葷綉緇溿€?涓轟簡璇存槑T鍨嬬數(shù)闃葷綉緇滅殑宸ヤ綔鍘熺悊錛岀幇浠ュ洓浣岲A杞崲鍣ㄤ負(fù)渚嬪姞浠ヨ璁猴紝濡傚浘22鎵€紺恒€?鍥?2T鍨嬬數(shù)闃葷綉緇滃瀷DA杞崲鍣?榪斿洖鏈妭2.1.2DA杞崲鍣ㄧ殑鎬ц兘鎸囨爣1.鍒嗚鯨鐜?2.杞崲綺懼害3.鍋忕Щ閲忚宸?4.寤虹珛鏃墮棿榪斿洖鏈妭

5、2.1.3鍏稿瀷鐨凞A杞崲鍣ㄨ姱鐗嘍AC08321.DAC0832鍐呴儴緇撴瀯2.寮曡剼鍔熻兘3.DAC0832鐨勬妧鏈寚鏍?1.DAC0832鍐呴儴緇撴瀯DAC0832鍐呴儴鐢變笁閮ㄥ垎鐢?shù)璧\緇勬垚錛屽鍥??3鎵€紺恒€?鍥?3DAC0832鍘熺悊妗嗗浘2.寮曡剼鍔熻兘DAC0832鑺墖涓?0寮曡剼錛屽弻鍒楃洿鎻掑紡灝佽銆傚叾寮曡剼鎺掑垪濡傚浘?24鎵€紺恒€?錛錛夋暟瀛楅噺杈撳叆綰緿?7~D0錛鏉★級?錛錛夋帶鍒剁嚎錛鏉★級?

6、?錛錛夎緭鍑虹嚎錛鏉★級??錛錛夌數(shù)婧愮嚎錛鏉★級??鍥?4DAC0832寮曡剼鍥?3.DAC0832鐨勬妧鏈寚鏍?DAC0832鐨勪富瑕佹妧鏈寚鏍囷細(xì)NOPSJMPLOOPEND涓夎娉㈢▼搴忥細(xì)?G0100HCLRAMOVDPTR錛?7FFFHDOWN錛?MOVX@DPTR錛孉錛涚嚎鎬т笅闄嶆INCAJNZDOWNMOVA錛?0FEH錛涚疆涓婂崌闃舵鍒濆€?UP錛?MOVX@DPTR錛孉錛涚嚎鎬т笂鍗囨DECAJNZUPSJ

7、MPDOWNEND鏂規(guī)嘗紼嬪簭錛?G0200HMOVDPTR錛?7FFFHLOOP錛?MOVA錛?33H錛涚疆涓婇檺鐢?shù)邈^MOVX@DPTR錛孉ACALLDELAY錛涘艦鎴愭柟娉㈤《瀹?MOVA錛?0FFH錛涚疆涓嬮檺鐢?shù)邈^MOVX@DPTR錛孉ACALLDELAY錛涘艦鎴愭柟娉㈠簳瀹?SJMPLOOPEND3.鍙岀紦鍐叉柟寮?鎵€璋撳弻緙撳啿鏂瑰紡錛屽氨鏄妸DAC0832鐨勪袱涓攣瀛樺櫒閮芥帴鎴愬彈鎺ч攣瀛樻柟寮忋€傚弻緙撳啿鏂瑰

8、紡DAC0832鐨勮繛鎺ュ鍥??11鎵€紺恒€?鍥?11DAC0832鐨勫弻緙撳啿鏂瑰紡鎺ュ彛渚?.2DAC0832鐢ㄤ綔娉㈠艦鍙戠敓鍣ㄣ€傝瘯鏍規(guī)嵁鍥?11鎺ョ嚎錛屽垎鍒啓鍑轟駭鐢熼敮榻挎嘗銆佷笁瑙掓嘗鍜屾柟娉㈢殑紼嬪簭錛屼駭鐢熺殑娉㈠艦濡傚浘212鎵€紺恒€?鍥?12渚?.2鎵€浜х敓鐨勬嘗褰?G0000HLOOP1錛?MOVA錛?80H錛涜漿鎹㈠垵鍊?LOOP錛?MOVR0錛?0FEH錛涜緭鍏ュ瘎瀛樺櫒鍦板潃MOVX@R0錛?A

9、錛涜漿鎹㈡暟鎹€佽緭鍏ュ瘎瀛樺櫒INCR0錛涗駭鐢烡AC瀵勫瓨鍣ㄥ湴鍧€MOVX@R0錛?A錛涙暟鎹€佸叆DAC瀵勫瓨鍣ㄥ茍榪涜?DA杞崲DECA錛涜漿鎹㈠€煎噺灝?NOP錛涘歡鏃?NOPNOPCJNEA錛?0FFH錛孡OOP錛?5V鏄惁杈撳嚭錛熸湭杈撳嚭錛岀▼搴忓驚鐜?SJMPLOOP1錛?5V宸茶緭鍑猴紝榪斿洖杞崲鍒濆€?END瑙ｏ細(xì)鐢卞浘211鍙互鐪嬪嚭錛孌AC0832閲囩敤鐨勬槸鍙岀紦鍐插弻鏋佹€х殑鎺ョ嚎鏂瑰紡錛岃