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闁辫畝锛�25
PCA8574APW 鏄竴娆剧敱 NXP锛堟仼鏅烘郸锛夌敓鐢�(ch菐n)鐨� I2C-bus 鍜� SMBus 鍏煎鐨� 8 浣嶉�氱敤杓稿叆/杓稿嚭锛圙PIO锛夋摯灞曞櫒銆傚畠浣跨敤 I2C 鍗�(xi茅)璀伴�茶閫氫俊锛岃兘澶犲湪涓绘帶鍒跺櫒寮曡叧璩囨簮鏈夐檺鐨勬儏娉佷笅鎿村睍杓稿叆/杓稿嚭鍔熻兘銆侾CA8574APW 鎻愪緵浜嗕綆鍔熻�楁搷浣滃拰楂樻姉骞叉摼鑳藉姏锛岄仼鐢ㄤ簬鍚勭ó宓屽叆寮忕郴绲�(t菕ng)鍜屽伐妤�(y猫)鎺у埗鎳夌敤銆�
銆�銆�瑭茶姱鐗囬泦鎴愪簡涓�鍊嬮厤缃瘎瀛樺櫒銆佽几鍏ュ瘎瀛樺櫒鍜岃几鍑哄瘎瀛樺櫒锛屽厑瑷辩敤鎴堕�氶亷绨″柈鐨勮畝瀵搷浣滀締鎺у埗 GPIO 寮曡叧鐨勭媭鎱�(t脿i)鎴栬畝鍙栧叾鐙�鎱�(t脿i)銆侾CA8574APW 鏀寔澶氶仈 64 鍊嬪櫒浠跺叡浜悓涓�绺界窔锛岄�欎娇寰楀畠鍦ㄩ渶瑕佸ぇ閲� I/O 鎿村睍鐨勬噳鐢ㄤ腑闈炲父瀵︾敤銆�
宸ヤ綔闆诲锛�1.7V 鑷� 5.5V
銆�銆�I2C 绺界窔閫熷害锛氭婧栨ā寮� 100kHz锛屽揩閫熸ā寮� 400kHz
銆�銆�杓稿叆婕忛浕娴侊細卤1渭A锛堟渶澶у�硷級
銆�銆�杓稿嚭椹�(q奴)鍕曡兘鍔涳細25mA锛堟簮/鐏岋級
銆�銆�宸ヤ綔婧害鑼冨湇锛�-40掳C 鑷� +85掳C
銆�銆�灏佽褰㈠紡锛歍SSOP-16
PCA8574APW 鎻愪緵浜嗗绋’钁楃壒鎬т互澧炲挤鍏堕仼鐢ㄦ�э細
銆�銆�1. 鍏煎 I2C 鍜� SMBus 鍗�(xi茅)璀帮紝鏀寔澶氬湴鍧�瑷疆锛屾渶澶氬彲浠ラ�ｆ帴 64 鍊嬬崹绔嬭ō鍌欏埌鍚屼竴姊濈附绶氫笂銆�
銆�銆�2. 鍏�(n猫i)缃笂闆诲京浣嶅姛鑳�锛岀⒑淇濊ō鍌欏姞闆绘檪鎵�鏈夊瘎瀛樺櫒鍒濆鍖栫偤榛樿獚鍊�銆�
銆�銆�3. 鎻愪緵闆欏悜 I/O 鍔熻兘锛岃兘澶犻潏娲婚厤缃瘡鍊嬪紩鑵崇偤杓稿叆鎴栬几鍑恒��
銆�銆�4. 楂橀浕姘ｅ櫔鑱插厤鐤�ц兘锛屼娇鍏堕仼鍚堜簬鍢堥洔鐠�(hu谩n)澧冧腑鐨勬噳鐢�銆�
銆�銆�5. 灏忓瀷鍖栧皝瑁濊ō瑷�锛屼究浜庡湪绌洪枔鍙楅檺鐨勯浕璺澘涓婇儴缃层��
銆�銆�6. 鏀寔妤典綆鐨勫伐浣滈浕澹�锛岄潪甯搁仼鍚堥浕姹犱緵闆荤殑渚挎敎寮忚ō鍌欍��
PCA8574APW 寤ｆ硾鎳夌敤浜庨渶瑕侀澶� GPIO 鐨勫牬鍚�锛屽寘鎷絾涓嶉檺浜庝互涓嬮牁(l菒ng)鍩燂細
銆�銆�1. 宸ユキ(y猫)鎺у埗绯荤当(t菕ng)锛屼緥濡傚偝鎰熷櫒鎺ュ彛鍜岀媭鎱�(t脿i)鐩�(ji膩n)鎺�銆�
銆�銆�2. 宓屽叆寮忔秷璨婚浕瀛愯ō鍌�锛屽瀹剁敤闆诲櫒鎺у埗鍣�銆�
銆�銆�3. 姹借粖闆诲瓙绯荤当(t菕ng)锛岀敤浣滈枊闂�(gu膩n)鐭╅櫍鎺у埗鍣ㄦ垨 LED 椹�(q奴)鍕曞櫒銆�
銆�銆�4. 閱�(y墨)鐧傝ō鍌欎腑鐢ㄤ簬鎿村睍鎸夐垥銆佹寚绀虹噲鎴栧叾浠栧瑷帶鍒�銆�
銆�銆�5. 鐗╄伅(li谩n)缍�(w菐ng) (IoT) 绯荤当(t菕ng)锛屾彁渚涙洿澶氱殑 GPIO 鎺ュ彛浠ヤ究閫ｆ帴鏇村澶栧湇瑷倷銆�
銆�銆�6. 閫氫俊妯″鍜岀恫(w菐ng)绲¤ō鍌�锛屽鍔犱俊铏熻檿鐞嗚垏鏁�(sh霉)鎿�(j霉)鍌宠几?sh霉)鎾礰娲绘�с��
PCA9554B, MCP23008, TCA9534
