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銆�?銆傞仴骞旀仛绨﹂閾綗顐堥暅钄獸闆诲瓨鍎�(ch菙)鍣ㄦ妧琛�(sh霉)鍒扮従(xi脿n)鍦ㄥ凡缍�(j墨ng)鐩哥暥(d膩ng)?sh霉)鏌愬?銆傛渶鍒濈殑閻甸浕瀛樺劜(ch菙)鍣ㄩ噰鐢ㄥ叐鏅堕珨绠★紡鍏╅浕瀹瑰櫒锛堬紥锛达紡锛掞迹锛夌殑绲�(ji茅)妲�(g貌u)锛屽皫(d菐o)鑷村厓浠堕珨绌嶇浉灏�(du矛)閬庡ぇ銆傛渶杩戦毃钁楅惖闆绘潗鏂欏拰鍒堕�犲伐钘濈殑鐧�(f膩)灞�锛屽湪閻甸浕瀛樺劜(ch菙)鍣ㄧ殑姣忎竴鍠厓鍏�(n猫i)閮戒笉鍐嶉渶瑕侀厤缃(bi膩o)婧�(zh菙n)闆诲鍣�銆傦疾锝侊綅锝旓綊锝忥綆鏂扮殑鍠櫠楂旂锛忓柈闆诲鍣ㄧ祼(ji茅)妲�(g貌u)鍙互鍍忥激锛诧肌锛竴妯�锛屼娇鐢ㄥ柈闆诲鍣ㄧ偤瀛樺劜(ch菙)鍣ㄩ櫍鍒楃殑姣忎竴鍒楁彁渚涘弮鑰冦�傝垏鐝�(xi脿n)鏈夌殑锛掞即锛忥紥锛ｇ祼(ji茅)妲�(g貌u)鐩告瘮锛屽畠鏈夋晥鐨勬妸鍏�(n猫i)瀛樺柈鍏冩墍闇�瑕佺殑闈㈢⿳娓涘皯涓�鍗娿�傛柊鐨勮ō(sh猫)瑷�(j矛)妤靛ぇ鐨勬彁楂樹簡閻甸浕瀛樺劜(ch菙)鍣ㄧ殑鏁堢巼锛岄檷浣庝簡閻甸浕瀛樺劜(ch菙)鍣ㄧ敘(ch菐n)鍝佺殑鐢熺敘(ch菐n)鎴愭湰銆�

銆�?銆傞仴骞旀仛绨﹂閾綗顐堝氨鐟彸椁愩劅^杞�(zhu菐n)鍚戞洿灏忕殑鎶�琛�(sh霉)绡�(ji茅)榛�(di菐n)渚嗘彁楂橀惖闆诲瓨鍎�(ch菙)鍣ㄥ悇鍠厓鐨勬垚鏈晥鐜囥�傛渶杩戦噰鐢ㄧ殑锛愶紟锛擄紩寰背鐨勫埗閫犲伐钘濈浉灏�(du矛)浜庡墠涓�浠ｏ紣锛庯紩寰背鐨勫埗閫犲伐钘�锛屾サ澶х殑闄嶄綆浜嗚姱鐗囩殑鍔熻��锛屾彁楂樹簡鍠��(g猫)鏅跺厓鐨勫埄鐢ㄧ巼銆�

銆�銆�鎵�鏈夐�欎簺浠や汉鎸ギ鐧�(f膩)灞曚娇閻甸浕瀛樺劜(ch菙)鍣ㄥ湪浜哄��?n猫i)绮橈缉顚婄暪姣嶉本鈧�(g猫)闋�(l菒ng)鍩熷唬鐐烘噳(y墨ng)鐢�銆傚緸杈﹀叕瀹ゅ京(f霉)鍗版(j墨)銆佹湇鍕�(w霉)鍣ㄥ埌姹借粖瀹夊叏姘ｅ泭鍜屽妯傝ō(sh猫)鏂�锛岄惖闆诲瓨鍎�(ch菙)鍣ㄤ笉鏂锋敼閫�(j矛n)鎬ц兘鍦ㄤ笘鐣岃寖鍦嶅収(n猫i)寰楀埌寤ｆ硾鐨勬噳(y墨ng)鐢�銆�

鍦ㄥ剙琛ㄤ腑鐨勬噳(y墨ng)鐢�

銆�銆�涓�锛� 姒傝堪锛�

銆�銆�FRAM鏄渶杩戝咕骞寸敱RAMTRON鍏徃鐮斿埗鐨勬柊鍨嬪瓨璨櫒锛屽畠鐨勬牳蹇冩妧琛�(sh霉)鏄惖闆绘櫠楂旀潗鏂�锛屾搧鏈夐毃鍗冲瓨鍙栬鎲堕珨鍜岄潪鏄撳け鎬у瓨璨敘(ch菐n)鍝佺殑鐗规�с�侳M24C256鏄竴绋惖闆诲瓨璨櫒锛團RAM锛�,瀹归噺鐐�256KBIT瀛樿帛鍣紝瀹冨拰AT24C256瀹归噺绛夊悓锛岀附绶氱祼(ji茅)妲�(g貌u)鍏煎锛屼絾FM24C256鐨勬�ц兘鎸囨(bi膩o)閬�(yu菐n)澶т簬AT24C256銆傚湪瀛樿帛鍣ㄩ牁(l菒ng)鍩熶腑锛孎(xi脿n)M24C256鎳�(y墨ng)鐢ㄩ�愭几琚帹寤ｅ拰瑾�(r猫n)鍙紝灏ゅ叾鏄ぇ瀹归噺瀛樿帛鍣�锛屽畠鐨勫劒(y艒u)鑹壒鎬ч仩(yu菐n)楂樹簬鍚岀瓑瀹归噺鐨凟EPROM銆傚湪闆诲瓙寮忛浕鑳借〃琛屾キ(y猫)涓紝鏁�(sh霉)鎿�(j霉)瀹夊叏淇濆瓨鏄渶閲嶈鐨�銆傞毃钁楅浕瀛愯〃鍔熻兘鐨勭櫦(f膩)灞�锛屼繚瀛樼殑鏁�(sh霉)鎿�(j霉)閲忚秺渚嗚秺澶э紝閫欏氨闇�瑕佸ぇ瀹归噺鐨勫瓨鍎�(ch菙)鍣�锛岃�屽ぇ瀹归噺鐨凟EPROM鎬ц兘鎸囨(bi膩o)涓嶆槸寰堥珮锛屽挨鍏舵槸鎿﹀娆℃暩(sh霉)鍜岄�熷害褰遍熆闆昏兘琛ㄨ嚜韬殑璩�(zh矛)閲�銆侳M24C256鍦ㄩ浕鑳借〃涓殑浣跨敤锛屾渻(hu矛)鎻愰珮闆昏兘琛ㄧ殑鏁�(sh霉)鎿�(j霉)瀹夊叏瀛樿帛鐗规�с��

銆�銆�浜岋紟 閻甸浕瀛樿帛鍣紙FRAM锛塅M24C256鐨勭壒鎬э細

銆�銆�鍌崇当(t菕ng)鍗婂皫(d菐o)楂旇鎲堕珨鏈夊叐澶ч珨绯伙細鏄撳け鎬ц鎲堕珨锛坴olatile memory锛夊拰闈炴槗澶辨�ц鎲堕珨锛坣on-volatile memory锛�銆�

銆�銆�鏄撳け鎬ц鎲堕珨鍍廠RAM鍜孌RAM鍦ㄦ矑鏈夐浕婧愮殑鎯呮硜涓嬮兘涓嶈兘淇濆瓨鏁�(sh霉)鎿�(j霉)銆備絾閫欑ó瀛樿帛鍣ㄦ搧鏈夐珮鎬ц兘銆佹槗鐢ㄧ瓑鍎�(y艒u)榛�(di菐n)銆�

銆�銆�闈炴槗澶辨�ц鎲堕珨鍍廍PROM锛孍EPROM鍜孎LASH 鑳藉湪鏂烽浕鍚庝粛淇濆瓨鏁�(sh霉)鎿�(j霉)銆備絾鐢变簬鎵�鏈夐�欎簺瑷樻喍楂斿潎璧锋簮鑷猂OM鎶�琛�(sh霉)锛屾墍浠ヤ笉闆ｆ兂璞″緱鍒颁粬鍊戦兘鏈変笉鏄撳鍏ョ殑缂洪粸(di菐n)锛氬鍏ョ珐鎱�銆佽畝瀵鏁�(sh霉)浣庛�佸鍏ユ檪(sh铆)宸ヨ�楀ぇ绛�銆�

銆�銆�FM24C256鏄竴鍊�(g猫)256Kbit 鐨凢RAM锛岀附绶氶牷鐜囧彲閬�(d谩)1MHz锛�10鍎勬浠ヤ笂鐨勮畝瀵鏁�(sh霉)锛屽伐鑰椾綆銆傝垏鍏稿瀷鐨凟EPROM AT24C256鐩告瘮杓�锛孎(xi脿n)M24C256鍙窡闅ㄧ附绶氶�熷害瀵叆锛岀劇闋堢瓑寰呮檪(sh铆)闁�锛岃�孉T24C256蹇呴爤绛夊緟骞炬绉掞紙ms锛夋墠鑳介��(j矛n)琛屼笅涓�姝ュ鎿嶄綔銆侳M24C256鍙畝瀵�10鍎勬浠ヤ笂锛屽咕涔庣劇闄愭璁�瀵�傝�孉T24C256鍙湁10钀箣涓�鐧捐惉娆¤畝瀵�銆傚彟澶栵紝AT24C256璁�瀵兘閲忛珮鍑篎M24C256鏈�2锛�500鍊�銆傚緸姣旇純涓湅鍑猴紝F(xi脿n)M24C256鍖呭惈浜哛AM鎶�琛�(sh霉)鍎�(y艒u)榛�(di菐n)锛屽悓鏅�(sh铆)鎿佹湁ROM鎶�琛�(sh霉)鐨勯潪鏄撳け鎬х壒榛�(di菐n)銆�

銆�銆�涓夛紟 FM24C256鐨勬噳(y墨ng)鐢細

銆�銆�鍦ㄥ剙琛ㄨō(sh猫)瑷�(j矛)涓�锛屾暩(sh霉)鎿�(j霉)鐨勫畨鍏ㄥ瓨璨潪甯搁噸瑕併�傚闆诲瓙寮忛浕鑳借〃锛屽畠鍦ㄩ亱(y霉n)琛屾湡闁撴檪(sh铆)鍒婚兘鍦ㄨ閷勬暩(sh霉)鎿�(j霉)锛�

銆�銆�濡傛灉鍔熻兘瑷�(sh猫)瑷�(j矛)姣旇純澶�锛岄偅涔堜繚瀛樼殑鏁�(sh霉)鎿�(j霉)閲忓ぇ锛屾摝瀵鏁�(sh霉)姣旇純澶�銆傞�欒姹傛湁涓�鍊�(g猫)楂樻�ц兘鐨勫瓨璨櫒鎵嶈兘婊胯冻瑕佹眰?锛孎(xi脿n)鍦ㄧ殑鍎�琛ㄨō(sh猫)瑷�(j矛)锛屽＝鍛借姹傞暦(zh菐ng)锛屾暩(sh霉)鎿�(j霉)淇濆瓨瀹夊叏鏈熼暦(zh菐ng)銆傜洰鍓�锛孎(xi脿n)M24C256鏄潪甯搁仼鍚堝剙琛ㄨō(sh猫)瑷�(j矛)瑕佹眰鐨勫瓨璨櫒銆傚畠鐨勬�ц兘鎸囨(bi膩o)瀹屽叏閬�(d谩)鍒拌ō(sh猫)瑷�(j矛)瑕佹眰锛岃В姹轰簡鍎�琛ㄤ腑鐨勮ō(sh猫)瑷�(j矛)鎲傛叜銆傛洿閲嶈鐨勬槸锛屽畠鐨勫瓨璨檪(sh铆)闁撶煭锛岃兘澶犲湪妤电煭鐨勬檪(sh铆)闁撳収(n猫i)淇濆瓨澶ч噺鏁�(sh霉)鎿�(j霉)锛岃В姹轰簡鍎�琛ㄥ湪绐佺劧鏂烽浕鏅�(sh铆)鏁�(sh霉)鎿�(j霉)鍙婃檪(sh铆)銆佸畨鍏ㄧ殑瀛樿帛銆俁AMTRON鍏徃鐮斿埗鐨凢M24C256锛岀偤浜嗘櫘鍙婁娇鐢�锛屽瓨璨寚浠ゅ拰AT24C256鍏煎锛屽彧鏄湪璁�瀵寚浠ゅ拰鎳�(y墨ng)绛旀槸涓嶉渶瑕佸欢鏅�(sh铆)锛屾彁楂樹簡鎿﹀閫熺巼銆傚皝瑁濋珨绌�銆佸姛鑳界瑙掑拰AT24C256涓�妯�锛屼娇瑷�(sh猫)瑷�(j矛)鑰呭鏄撴帴鍙楀拰閬�(y霉n)鐢�銆�

銆�銆�瀵瓙绋嬪簭锛�

銆�銆�WRITE锛�

銆�銆�CLR1 PM.3      ;;瑷�(sh猫)缃甈4.3鐐鸿几鍑虹媭鎱�(t脿i)

銆�銆�CLR1 P4.2

銆�銆�CLR1 P4.3

銆�銆�CLR1 P4.1       锛�锛涙墦闁嬪淇濊(h霉)

銆�銆�CALL !SENDSTART    锛�锛涚櫦(f膩)閫佽捣濮嬩綅

銆�銆�MOV A,#10100000B

銆�銆�CALL !SENDCOM    ;;鐧�(f膩)閫佸鍛戒护

銆�銆�BC $WNOACKX      锛涳紱娌掓噳(y墨ng)绛斿墖閷�(cu貌)瑾よ繑鍥�

銆�銆�NOP

銆�銆�CLR1 P4.2

銆�銆�CLR1  PM4.3        ;; 瑷�(sh猫)缃甈4.3鐐鸿几鍑虹媭鎱�(t脿i)

銆�銆�MOV A,D            ;;D涓瓨鏀炬墍瀵柈鍏冮珮鍦板潃

銆�銆�CALL !SENDCOM     锛涳紱鐧�(f膩)閫佹墍瀵柈鍏冮珮鍦板潃

銆�銆�BC $WNOACKX    锛涳紱锛涙矑鎳�(y墨ng)绛斿墖閷�(cu貌)瑾よ繑鍥�

銆�銆�CLR1  PM4.3        ;; 瑷�(sh猫)缃甈4.3鐐鸿几鍑虹媭鎱�(t脿i)

銆�銆�MOV A,E        锛�锛�;;E涓瓨鏀炬墍瀵柈鍏冧綆鍦板潃

銆�銆�CALL !SENDCOM   锛�锛涚櫦(f膩)閫佹墍瀵柈鍏冧綆鍦板潃

銆�銆�BC $WNOACKX   锛�锛涙矑鎳�(y墨ng)绛斿墖閷�(cu貌)瑾よ繑鍥�

銆�銆�CLR1  PM4.3        ;; 瑷�(sh猫)缃甈4.3鐐鸿几鍑虹媭鎱�(t脿i)

銆�銆�MOV A,[HL]       ;;[HL] 涓瓨鏀炬墍瀵暩(sh霉)鎿�(j霉)

銆�銆�CALL !A24SENDC    锛�锛涚櫦(f膩)閫佹墍瀵暩(sh霉)鎿�(j霉)

銆�銆�CLR1 CY

銆�銆�SET1 P4.1  锛�锛涘淇濊(h霉)

銆�銆�WNOACKX锛�

銆�銆�SET1 CY

銆�銆�RET

銆�銆�SENDSTART:    鐧�(f膩)閫佽捣濮嬩綅瀛愮▼搴�

銆�銆�SET1 P4.2

銆�銆�SET1 P4.3      ;;鐧�(f膩)璧峰浣�

銆�銆�NOP

銆�銆�NOP

銆�銆�CLR1 P4.3

銆�銆�CLR1 4.2

銆�銆�RET

銆�銆�SENDCOM:   鐧�(f膩)閫佸懡浠ゅ瓙绋嬪簭

銆�銆�CALL !A24SENDC

銆�銆�CLR1 P4.2

銆�銆�SET1  PM4.3   ;;瑷�(sh猫)缃甈4.3鐐鸿几鍏ョ媭鎱�(t脿i)

銆�銆�NOP

銆�銆�NOP

銆�銆�NOP

銆�銆�SET1 4.2

銆�銆�BT P4.3,$DCOM1                 ;娓�(c猫)瑭︽噳(y墨ng)绛斾俊铏�(h脿o)锛屾湁鎳�(y墨ng)绛擟Y=1锛屽惁鍓嘋Y=0

銆�銆�CLR1 CY

銆�銆�RET             ;BR RNOACK

銆�銆�DCOM1:

銆�銆�SET1 CY

銆�銆�RET

銆�銆�A24SENDC:     鐧�(f膩)閫佹暩(sh霉)鎿�(j霉)瀛愮▼搴�

銆�銆�CLR1 CY

銆�銆�MOV B,#08H   ;;鐧�(f膩)閫�8浣�

銆�銆�SENDREP:

銆�銆�CLR1 P4.2

銆�銆�NOP

銆�銆�CLR1 P4.3

銆�銆�ROLC A,1         锛涳紱宸︾Щ涓�浣�

銆�銆�BNC $SENDPD

銆�銆�SET1  P4.3

銆�銆�SENDPD:

銆�銆�NOP

銆�銆�SET1 P4.2

銆�銆�NOP

銆�銆�DBNZ B,$SENDREP   锛�8浣嶇櫦(f膩)閫佸畬杩斿洖

銆�銆�RET

銆�銆�璁�瀛愮▼搴忥細

銆�銆�READ:

銆�銆�CLR1 PM4.3       锛�锛�;; 瑷�(sh猫)缃甈4.3鐐鸿几鍑虹媭鎱�(t脿i)

銆�銆�CALL !SENDSTART 锛涚櫦(f膩)閫佽捣濮嬩綅

銆�銆�MOV A,#10100000B

銆�銆�CALL !SENDCOM   ;; 锛涚櫦(f膩)閫佽畝鍛戒护

銆�銆�BC $RNOACK       锛�锛�       娌掓噳(y墨ng)绛斿墖閷�(cu貌)瑾よ繑鍥�

銆�銆�CLR1 P4.2

銆�銆�CLR1 PM4.3        ;; 瑷�(sh猫)缃甈4.3鐐鸿几鍑虹媭鎱�(t脿i)

銆�銆�MOV A,D         ;D涓瓨鏀炬墍璁�鍠厓楂樺湴鍧�

銆�銆�CALL !SENDCOM  锛�锛涚櫦(f膩)閫佹墍璁�鍠厓楂樺湴鍧�

銆�銆�BC $RNOACK            ;     娌掓噳(y墨ng)绛斿墖閷�(cu貌)瑾よ繑鍥�

銆�銆�CLR1 PM4.3    锛�锛涜ō(sh猫)缃甈4.3鐐鸿几鍑虹媭鎱�(t脿i)

銆�銆�MOV A,E      锛�锛�;E涓瓨鏀炬墍璁�鍠厓浣庡湴鍧�

銆�銆�CALL !SENDCOM   锛�锛涚櫦(f膩)閫佹墍璁�鍠厓浣庡湴鍧�

銆�銆�BC $RNOACK   锛�锛涙矑鎳�(y墨ng)绛斿墖閷�(cu貌)瑾よ繑鍥�

銆�銆�CLR1 P4.2

銆�銆�CLR1 PM4.3   锛�锛涜ō(sh猫)缃甈4.3鐐鸿几鍑虹媭鎱�(t脿i)

銆�銆�SET1 P4.2

銆�銆�SET1 4.3

銆�銆�NOP

銆�銆�NOP

銆�銆�CLR1 P4.3

銆�銆�CLR1 P4.2

銆�銆�CALL !SENDSTART  锛涚櫦(f膩)閫佽捣濮嬩綅

銆�銆�MOV A,#10100001B

銆�銆�CALL !SENDCOM     ;;鐧�(f膩)閫佽畝鍛戒护

銆�銆�BC $RNOACK

銆�銆�CLR1 P4.2

銆�銆�SET1 PM4.3

銆�銆�CALL !N24READB     锛�锛涜畝鏁�(sh霉)鎿�(j霉)

銆�銆�CLR1 SK256

銆�銆�CLR1 PM4.6

銆�銆�CALL !SENDSTOP    锛�锛涚櫦(f膩)閫佸仠姝綅

銆�銆�READRET:

銆�銆�CLR1 CY

銆�銆�RET

銆�銆�RNOACK:

銆�銆�SET1 CY

銆�銆�RET

銆�銆�N24READB:

銆�銆�MOV B,#08H

銆�銆�READREPX:

銆�銆�CLR1 P4.2

銆�銆�NOP

銆�銆�NOP

銆�銆�NOP

銆�銆�SET1 P4.2

銆�銆�NOP

銆�銆�NOP

銆�銆�NOP

銆�銆�CLR1 CY

銆�銆�BF P4.3,$READPD

銆�銆�SET1 CY

銆�銆�READPD:

銆�銆�ROLC A,1    ;;宸︾Щ1浣�

銆�銆�NOP

銆�銆�NOP

銆�銆�NOP

銆�銆�DBNZ B,$READREPX    锛�锛涘垽鏂锋槸鍚︽帴鍙�8浣�

銆�銆�RET

銆�銆�SENDSTOP:     鐧�(f膩)閫佸仠姝綅

銆�銆�CLR1 P4.3

銆�銆�NOP

銆�銆�SET1 P4.2

銆�銆�NOP

銆�銆�SET1 P4.3

銆�銆�NOP

銆�銆�RET

銆�銆�鍥涳紟 灏忕祼(ji茅)锛�

銆�銆�FM24C256 鏄竴绋珮鎬ц兘鐨勫瓨璨櫒锛屾�ц兘鎸囨(bi膩o)閬�(yu菐n)閬�(yu菐n)澶т簬EEPROM銆傚湪闆诲瓙寮忛浕鑳借〃鎳�(y墨ng)鐢ㄤ腑锛屾暩(sh霉)鎿�(j霉)鎿﹀娆℃暩(sh霉)姣旇純闋荤箒锛岃�屼笖鍦ㄦ帀闆诲瓨璨檪(sh铆)鏁�(sh霉)鎿�(j霉)閲忓ぇ銆佹檪(sh铆)闁撶煭锛屾�庢ǎ瀹夊叏鍙潬蹇�熺殑淇濆瓨鏁�(sh霉)鎿�(j霉)涓�鍊�(g猫)闂�(gu膩n)閸电殑鎶�琛�(sh霉)銆傛墍浠�锛孎(xi脿n)M24C256鐨勫劒(y艒u)鑹壒鎬ч潪甯搁仼鍚堝剙琛ㄤ腑浣跨敤锛屽闆昏兘琛�銆佹按琛�銆佺叅姘ｈ〃銆佹殩姘ｈ〃銆佽▓(j矛)绋嬭粖琛ㄣ�侀啱(y墨)鐧傚剙琛ㄧ瓑鎳�(y墨ng)鐢ㄥ唬娉�銆傚畠鐨勫皝瑁濆舰寮忔湁SOIC鍜孌IP銆�

缍韩闆诲瓙閫�锛岄浕瀛愮煡璀�(sh铆)锛屼竴鏌ョ櫨閫�锛�

宸叉敹閷勮姊�161791鍊�(g猫)