{"id":4504,"date":"2025-05-29T11:00:00","date_gmt":"2025-05-29T02:00:00","guid":{"rendered":"https:\/\/www.ramxeed.com\/jp\/?post_type=column&#038;p=4504"},"modified":"2025-12-22T10:47:51","modified_gmt":"2025-12-22T01:47:51","slug":"eeprom-interface-command-guide","status":"publish","type":"column","link":"https:\/\/www.ramxeed.com\/jp\/tech-column\/eeprom-interface-command-guide\/","title":{"rendered":"EEPROM\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5225\u30b3\u30de\u30f3\u30c9\u5b8c\u5168\u30ac\u30a4\u30c9\uff1aI\u00b2C\u30fbSPI\u30fbMicrowire\u306e\u6bd4\u8f03\u3068\u5b9f\u88c5"},"content":{"rendered":"\n<p>I\u00b2C\u3001SPI\u3001Microwire\u305d\u308c\u305e\u308c\u306eEEPROM\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u304a\u3051\u308b\u901a\u4fe1\u65b9\u5f0f\u3084\u30b3\u30de\u30f3\u30c9\u306e\u9055\u3044\u3092\u6bd4\u8f03\u3057\u3001\u8a2d\u8a08\u6642\u306e\u6ce8\u610f\u70b9\u3084\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u6700\u9069\u306aEEPROM\u9078\u5b9a\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u306f\u3058\u3081\u306b<\/strong><\/h2>\n\n\n\n<p>EEPROM\uff08Electrically Erasable Programmable Read-Only Memory\uff09\u306f\u3001\u96fb\u6c17\u7684\u306b\u30c7\u30fc\u30bf\u306e\u6d88\u53bb\u304a\u3088\u3073\u66f8\u304d\u63db\u3048\u304c\u53ef\u80fd\u306a\u4e0d\u63ee\u767a\u6027\u30e1\u30e2\u30ea\u3067\u3042\u308a\u3001\u7d44\u307f\u8fbc\u307f\u30b7\u30b9\u30c6\u30e0\u3084\u5404\u7a2e\u96fb\u5b50\u6a5f\u5668\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u96fb\u6e90\u304c\u906e\u65ad\u3055\u308c\u3066\u3082\u30c7\u30fc\u30bf\u3092\u4fdd\u6301\u3067\u304d\u308b\u3068\u3044\u3046\u7279\u6027\u306b\u3088\u308a\u3001\u8a2d\u5b9a\u5024\u3084\u5c65\u6b74\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002EEPROM\u306e\u901a\u4fe1\u306b\u306f\u4e3b\u306bI\u00b2C\u3001SPI\u3001Microwire\u3068\u3044\u3063\u305f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u304c\u7528\u3044\u3089\u308c\u3001\u305d\u308c\u305e\u308c\u306b\u5bfe\u5fdc\u3057\u305f\u30b3\u30de\u30f3\u30c9\u30bb\u30c3\u30c8\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u3053\u308c\u3089\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3054\u3068\u306e\u4ee3\u8868\u7684\u306a\u30b3\u30de\u30f3\u30c9\u3068\u305d\u306e\u5b9f\u88c5\u65b9\u6cd5\u3001\u9055\u3044\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3001\u8a2d\u8a08\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u6700\u9069\u306aEEPROM\u9078\u5b9a\u3068\u8a2d\u8a08\u3092\u884c\u3046\u305f\u3081\u306e\u6307\u91dd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>EEPROM\u306e\u57fa\u672c\u6982\u8981\u3068\u7528\u9014<\/strong><\/h3>\n\n\n\n<p>EEPROM\u306fROM\u306e\u4e00\u7a2e\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u81ea\u7531\u306b\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u63db\u3048\u3089\u308c\u308b\u70b9\u304c\u7279\u5fb4\u3067\u3059\u3002\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3068\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u66f8\u304d\u8fbc\u307f\u5358\u4f4d\u304c\u30d0\u30a4\u30c8\u5358\u4f4d\u3067\u3042\u308b\u305f\u3081\u3001\u5c11\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u983b\u7e41\u306b\u66f8\u304d\u63db\u3048\u308b\u7528\u9014\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u7528\u9014\u3068\u3057\u3066\u306f\u3001\u30de\u30a4\u30b3\u30f3\u306e\u521d\u671f\u8a2d\u5b9a\u60c5\u5831\u3001\u30bb\u30f3\u30b5\u306e\u8f03\u6b63\u30c7\u30fc\u30bf\u3001\u901a\u4fe1\u6a5f\u5668\u306e\u30ed\u30b0\u30c7\u30fc\u30bf\u4fdd\u6301\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001EEPROM\u306f\u6bd4\u8f03\u7684\u5c0f\u5bb9\u91cf\uff08\u6570\u30ad\u30ed\u30d3\u30c3\u30c8\u301c\u6570\u30e1\u30ac\u30d3\u30c3\u30c8\uff09\u3067\u3042\u308a\u3001\u4f4e\u6d88\u8cbb\u96fb\u529b\u3001\u9577\u5bff\u547d\u3068\u3044\u3063\u305f\u7279\u6027\u3082\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4e3b\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u7a2e\u985e\uff08I\u00b2C\u3001SPI\u3001Microwire\uff09<\/strong><\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u4ee3\u8868\u7684\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u6bd4\u8f03\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/strong><\/td><td><strong>\u4fe1\u53f7\u7dda<\/strong><\/td><td><strong>\u901a\u4fe1\u901f\u5ea6<\/strong><\/td><td><strong>\u4e3b\u306a\u7528\u9014<\/strong><\/td><\/tr><tr><td>I\u00b2C<\/td><td>2\u672c\uff08SCL\/SDA\uff09<\/td><td>\uff5e400kbps<\/td><td>\u5c0f\u5bb9\u91cf\u30e1\u30e2\u30ea\u3001\u30bb\u30f3\u30b5\u901a\u4fe1<\/td><\/tr><tr><td>SPI<\/td><td>4\u672c\uff08SCK\u7b49\uff09<\/td><td>\uff5e10Mbps\u4ee5\u4e0a<\/td><td>\u9ad8\u901f\u901a\u4fe1\u3001\u30c7\u30fc\u30bf\u30ed\u30ac\u30fc<\/td><\/tr><tr><td>Microwire<\/td><td>3\uff5e4\u672c\uff08SK\u7b49\uff09<\/td><td>\uff5e1Mbps<\/td><td>\u30ec\u30ac\u30b7\u30fc\u5236\u5fa1\u6a5f\u5668<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>I\u00b2C\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/strong><\/h2>\n\n\n\n<p>I\u00b2C\u306f\u7701\u914d\u7dda\u3067\u8907\u6570\u30c7\u30d0\u30a4\u30b9\u63a5\u7d9a\u304c\u53ef\u80fd\u306a\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u540c\u671f\u901a\u4fe1\u65b9\u5f0f\u3067\u3059\u3002EEPROM\u3068\u306e\u63a5\u7d9a\u3067\u306f\u3001\u30a2\u30c9\u30ec\u30b9\u6307\u5b9a\u3068\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u66f8\u304d\u304c\u5206\u304b\u308c\u3066\u304a\u308a\u3001\u7279\u306b\u5c0f\u898f\u6a21\u30b7\u30b9\u30c6\u30e0\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6982\u8981<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30bf\u30fc\u30c8\u30d3\u30c3\u30c8<br><\/li>\n\n\n\n<li>\u30b9\u30ec\u30fc\u30d6\u30a2\u30c9\u30ec\u30b9\u9001\u4fe1 + R\/W\u30d3\u30c3\u30c8<br><\/li>\n\n\n\n<li>ACK\/NACK\u5fdc\u7b54\u78ba\u8a8d<br><\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u6307\u5b9a<br><\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u9001\u53d7\u4fe1<br><\/li>\n\n\n\n<li>\u30b9\u30c8\u30c3\u30d7\u30d3\u30c3\u30c8<br><\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u30b7\u30fc\u30b1\u30f3\u30b9\u30671\u56de\u306e\u901a\u4fe1\u304c\u5b8c\u4e86\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4e3b\u306a\u30b3\u30de\u30f3\u30c9\u3068\u305d\u306e\u6a5f\u80fd<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\u30b3\u30de\u30f3\u30c9\u7a2e\u5225<\/strong><\/td><td><strong>\u6982\u8981<\/strong><\/td><\/tr><tr><td>\u30e9\u30f3\u30c0\u30e0\u30ea\u30fc\u30c9<\/td><td>\u4efb\u610f\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3057\u30661\u30d0\u30a4\u30c8\u8aad\u307f\u51fa\u3057<\/td><\/tr><tr><td>\u30b7\u30fc\u30b1\u30f3\u30b7\u30e3\u30eb\u30ea\u30fc\u30c9<\/td><td>\u9023\u7d9a\u3057\u305f\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u306e\u8907\u6570\u30d0\u30a4\u30c8\u8aad\u307f\u51fa\u3057<\/td><\/tr><tr><td>\u30da\u30fc\u30b8\u30e9\u30a4\u30c8<\/td><td>\u30da\u30fc\u30b8\u5358\u4f4d\u3067\u8907\u6570\u30d0\u30a4\u30c8\u3092\u66f8\u304d\u8fbc\u307f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u5b9f\u88c5\u4f8b\u3068\u6ce8\u610f\u70b9<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u66f8\u304d\u8fbc\u307f\u5f8c\u306f\u5fc5\u305a\u5185\u90e8\u66f8\u304d\u8fbc\u307f\u6642\u9593\uff08tWR\uff09\u3092\u8003\u616e<br><\/li>\n\n\n\n<li>\u30da\u30fc\u30b8\u5883\u754c\u3092\u307e\u305f\u3050\u66f8\u304d\u8fbc\u307f\u306b\u306f\u5236\u9650\u304c\u3042\u308b<br><\/li>\n\n\n\n<li>\u8d77\u52d5\u76f4\u5f8c\u306f\u30c7\u30d0\u30a4\u30b9\u304c\u53cd\u5fdc\u3057\u306a\u3044\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u521d\u671f\u5316\u51e6\u7406\u304c\u5fc5\u8981<br><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>SPI\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/strong><\/h2>\n\n\n\n<p>SPI\u306f\u9ad8\u901f\u306a\u5168\u4e8c\u91cd\u901a\u4fe1\u304c\u53ef\u80fd\u3067\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u78ba\u8a8d\u3084\u66f8\u304d\u8fbc\u307f\u5236\u5fa1\u306a\u3069\u9ad8\u5ea6\u306a\u64cd\u4f5c\u304c\u53ef\u80fd\u3067\u3059\u3002\u5927\u5bb9\u91cf\u3084\u9ad8\u901f\u30a2\u30af\u30bb\u30b9\u7528\u9014\u306b\u5411\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6982\u8981<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CS\u4fe1\u53f7\u3092LOW\u3067\u901a\u4fe1\u958b\u59cb<br><\/li>\n\n\n\n<li>\u30b3\u30de\u30f3\u30c9\uff088bit\uff09<br><\/li>\n\n\n\n<li>\u30a2\u30c9\u30ec\u30b9\uff08\u30c7\u30d0\u30a4\u30b9\u306b\u3088\u308a16\u301c24bit\uff09<br><\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u306e\u9001\u53d7\u4fe1<br><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4e3b\u306a\u30b3\u30de\u30f3\u30c9\u3068\u305d\u306e\u6a5f\u80fd<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\u30b3\u30de\u30f3\u30c9\u540d<\/strong><\/td><td><strong>\u30aa\u30da\u30b3\u30fc\u30c9<\/strong><\/td><td><strong>\u8aac\u660e<\/strong><\/td><\/tr><tr><td>WREN<\/td><td>0x06<\/td><td>\u66f8\u304d\u8fbc\u307f\u6709\u52b9\u5316<\/td><\/tr><tr><td>WRDI<\/td><td>0x04<\/td><td>\u66f8\u304d\u8fbc\u307f\u7121\u52b9\u5316<\/td><\/tr><tr><td>READ<\/td><td>0x03<\/td><td>\u30c7\u30fc\u30bf\u8aad\u307f\u51fa\u3057<\/td><\/tr><tr><td>WRITE<\/td><td>0x02<\/td><td>\u30c7\u30fc\u30bf\u66f8\u304d\u8fbc\u307f<\/td><\/tr><tr><td>RDSR<\/td><td>0x05<\/td><td>\u30b9\u30c6\u30fc\u30bf\u30b9\u30ec\u30b8\u30b9\u30bf\u8aad\u307f\u51fa\u3057\uff08WIP\u78ba\u8a8d\u7b49\uff09<\/td><\/tr><tr><td>WRSR<\/td><td>0x01<\/td><td>\u30b9\u30c6\u30fc\u30bf\u30b9\u30ec\u30b8\u30b9\u30bf\u3078\u306e\u66f8\u304d\u8fbc\u307f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u5b9f\u88c5\u4f8b\u3068\u6ce8\u610f\u70b9<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u66f8\u304d\u8fbc\u307f\u524d\u306b\u5fc5\u305aWREN\u3092\u5b9f\u884c<br><\/li>\n\n\n\n<li>\u66f8\u304d\u8fbc\u307f\u5f8c\u306fRDSR\u3067\u5b8c\u4e86\u78ba\u8a8d\uff08WIP\u30d3\u30c3\u30c8\uff09<br><\/li>\n\n\n\n<li>\u30da\u30fc\u30b8\u30b5\u30a4\u30ba\u5236\u9650\u3084CS\u4fe1\u53f7\u5236\u5fa1\u306b\u6ce8\u610f<br><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Microwire\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/strong><\/h2>\n\n\n\n<p>Microwire\u306f\u30b7\u30f3\u30d7\u30eb\u306a\u534a\u4e8c\u91cd\u901a\u4fe1\u3067\u3001\u53e4\u3044\u5236\u5fa1\u6a5f\u5668\u306a\u3069\u3067\u591a\u304f\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002EEPROM\u3068\u306e\u76f4\u63a5\u7684\u306a\u5236\u5fa1\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6982\u8981<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30bf\u30fc\u30c8\u30d3\u30c3\u30c8<br><\/li>\n\n\n\n<li>\u30aa\u30da\u30b3\u30fc\u30c9\uff082bit\uff09\uff0b \u30a2\u30c9\u30ec\u30b9<br><\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\uff08\u8aad\u307f\u66f8\u304d\u5bfe\u8c61\uff09<br><\/li>\n\n\n\n<li>CS\u4fe1\u53f7\u306b\u3088\u308a\u901a\u4fe1\u958b\u59cb\uff0f\u7d42\u4e86<br><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u4e3b\u306a\u30b3\u30de\u30f3\u30c9\u3068\u305d\u306e\u6a5f\u80fd<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\u30b3\u30de\u30f3\u30c9\u540d<\/strong><\/td><td><strong>\u6a5f\u80fd\u6982\u8981<\/strong><\/td><\/tr><tr><td>READ<\/td><td>\u30a2\u30c9\u30ec\u30b9\u6307\u5b9a\u30671\u30d0\u30a4\u30c8\u8aad\u307f\u51fa\u3057<\/td><\/tr><tr><td>WRITE<\/td><td>\u30a2\u30c9\u30ec\u30b9\u6307\u5b9a\u30671\u30d0\u30a4\u30c8\u66f8\u304d\u8fbc\u307f\uff08WEN\u5f8c\u306b\u6709\u52b9\uff09<\/td><\/tr><tr><td>WEN<\/td><td>\u66f8\u304d\u8fbc\u307f\u64cd\u4f5c\u306e\u6709\u52b9\u5316<\/td><\/tr><tr><td>WDS<\/td><td>\u66f8\u304d\u8fbc\u307f\u64cd\u4f5c\u306e\u7121\u52b9\u5316<\/td><\/tr><tr><td>WRAL<\/td><td>\u5168\u30a2\u30c9\u30ec\u30b9\u306b\u540c\u4e00\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u307f<\/td><\/tr><tr><td>ERAL<\/td><td>\u5168\u30a2\u30c9\u30ec\u30b9\u306e\u30c7\u30fc\u30bf\u3092\u6d88\u53bb<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u5b9f\u88c5\u4f8b\u3068\u6ce8\u610f\u70b9<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>GPIO\u3067\u30bd\u30d5\u30c8\u5236\u5fa1\uff08\u30d3\u30c3\u30c8\u30d0\u30f3\u30ae\u30f3\u30b0\uff09\u3059\u308b\u69cb\u6210\u304c\u4e00\u822c\u7684<br><\/li>\n\n\n\n<li>SK\u306e\u30c8\u30b0\u30eb\u5236\u5fa1\u3001CS\u306e\u7ba1\u7406\u304c\u91cd\u8981<br><\/li>\n\n\n\n<li>\u66f8\u304d\u8fbc\u307f\u4e2d\u306e\u5272\u8fbc\u307f\u3084\u96fb\u6e90\u65ad\u306b\u6ce8\u610f\u304c\u5fc5\u8981<br><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u5225\u30b3\u30de\u30f3\u30c9\u6bd4\u8f03\u8868<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>\u6a5f\u80fd\u9805\u76ee<\/strong><\/td><td><strong>I\u00b2C<\/strong><\/td><td><strong>SPI<\/strong><\/td><td><strong>Microwire<\/strong><\/td><\/tr><tr><td>\u8aad\u307f\u51fa\u3057<\/td><td>\u30e9\u30f3\u30c0\u30e0\/\u30b7\u30fc\u30b1\u30f3\u30b7\u30e3\u30eb<\/td><td>READ<\/td><td>READ<\/td><\/tr><tr><td>\u66f8\u304d\u8fbc\u307f<\/td><td>\u30da\u30fc\u30b8\/\u30d0\u30a4\u30c8\u30e9\u30a4\u30c8<\/td><td>WRITE\uff08WREN\u5f8c\uff09<\/td><td>WRITE\uff08WEN\u5f8c\uff09<\/td><\/tr><tr><td>\u30b9\u30c6\u30fc\u30bf\u30b9\u78ba\u8a8d<\/td><td>\u306a\u3057<\/td><td>RDSR<\/td><td>\u306a\u3057<\/td><\/tr><tr><td>\u66f8\u304d\u8fbc\u307f\u4fdd\u8b77<\/td><td>\u306a\u3057<\/td><td>WREN \/ WRDI<\/td><td>WEN \/ WDS<\/td><\/tr><tr><td>\u5168\u66f8\u304d\u8fbc\u307f\uff0f\u6d88\u53bb<\/td><td>\u5bfe\u5fdc\u306a\u3057<\/td><td>\u975e\u5bfe\u5fdc<\/td><td>WRAL \/ ERAL<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u5b9f\u88c5\u6642\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u30c7\u30d0\u30a4\u30b9\u9078\u5b9a\u306e\u30dd\u30a4\u30f3\u30c8<\/strong><\/h3>\n\n\n\n<p>EEPROM\u306e\u63a1\u7528\u306b\u3042\u305f\u3063\u3066\u306f\u3001\u5bb9\u91cf\u3001\u8010\u4e45\u6027\u3001\u96fb\u6e90\u96fb\u5727\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u5f62\u72b6\u3001\u52d5\u4f5c\u6e29\u5ea6\u7bc4\u56f2\u3068\u3044\u3063\u305f\u8907\u6570\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u7dcf\u5408\u7684\u306b\u8a55\u4fa1\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u5bb9\u91cf\u306f\u30b7\u30b9\u30c6\u30e0\u3067\u4fdd\u6301\u3059\u3079\u304d\u30c7\u30fc\u30bf\u91cf\u3084\u4fdd\u5b58\u5bfe\u8c61\u306e\u7a2e\u985e\uff08\u8a2d\u5b9a\u5024\u3001\u30ed\u30b0\u3001\u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u7b49\uff09\u306b\u5fdc\u3058\u3066\u9069\u5207\u306b\u9078\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u66f8\u304d\u63db\u3048\u983b\u5ea6\u304c\u9ad8\u3044\u7528\u9014\u3067\u306f\u3001EEPROM\u306e\u66f8\u304d\u63db\u3048\u5bff\u547d\uff08\u4e00\u822c\u7684\u306b10\u4e07\uff5e100\u4e07\u56de\u7a0b\u5ea6\uff09\u304c\u5236\u7d04\u306b\u306a\u308b\u305f\u3081\u3001\u3088\u308a\u9ad8\u8010\u4e45\u306aFRAM\uff08FeRAM\uff09\u306a\u3069\u306e\u4ee3\u66ff\u6280\u8853\u3092\u691c\u8a0e\u3059\u308b\u3053\u3068\u3082\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u96fb\u6e90\u96fb\u5727\u7bc4\u56f2\u3084\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u96fb\u5727\u30ec\u30d9\u30eb\u304c\u30de\u30a4\u30b3\u30f3\u3068\u5408\u81f4\u3057\u3066\u3044\u308b\u304b\u306e\u78ba\u8a8d\u3082\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u3064\u3044\u3066\u3082\u3001SOP\u3001TSSOP\u3001DFN\u306a\u3069\u7528\u9014\u3084\u5b9f\u88c5\u74b0\u5883\u306b\u5fdc\u3058\u3066\u9078\u3073\u307e\u3059\u3002\u52d5\u4f5c\u6e29\u5ea6\u7bc4\u56f2\u306f\u7523\u696d\u6a5f\u5668\u3084\u8eca\u8f09\u7528\u9014\u3067\u306f-40\u2103\u301c125\u2103\u3092\u30ab\u30d0\u30fc\u3059\u308b\u88fd\u54c1\u304c\u6c42\u3081\u3089\u308c\u308b\u5834\u5408\u3082\u3042\u308b\u305f\u3081\u3001\u4fe1\u983c\u6027\u8a55\u4fa1\u3082\u542b\u3081\u305f\u9078\u5b9a\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u901a\u4fe1\u30a8\u30e9\u30fc\u306e\u5bfe\u51e6\u6cd5<\/strong><\/h3>\n\n\n\n<p>EEPROM\u3068\u306e\u901a\u4fe1\u3067\u306f\u3001I\u00b2C\u3084SPI\u306a\u3069\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u56fa\u6709\u306e\u901a\u4fe1\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u5074\u3067\u306e\u30a8\u30e9\u30fc\u51e6\u7406\u8a2d\u8a08\u304c\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002I\u00b2C\u3067\u306fACK\/NACK\u5fdc\u7b54\u306e\u76e3\u8996\u3001SPI\u3067\u306fWIP\uff08Write In Progress\uff09\u30d3\u30c3\u30c8\u306e\u30dd\u30fc\u30ea\u30f3\u30b0\u306b\u3088\u308a\u901a\u4fe1\u72b6\u614b\u3092\u5224\u65ad\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u518d\u8a66\u884c\u30ed\u30b8\u30c3\u30af\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u5b89\u5b9a\u6027\u3092\u5411\u4e0a\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u3001\u66f8\u304d\u8fbc\u307f\u5b8c\u4e86\u5f85\u6a5f\u51e6\u7406\u3092\u9069\u5207\u306b\u8a2d\u3051\u306a\u3044\u3068\u3001\u30c7\u30fc\u30bf\u7834\u640d\u3084\u8aa4\u52d5\u4f5c\u3092\u5f15\u304d\u8d77\u3053\u3059\u539f\u56e0\u3068\u306a\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u901a\u4fe1\u4e2d\u306b\u7570\u5e38\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306e\u305f\u3081\u306b\u3001I\u00b2C\u3067\u306f\u30d0\u30b9\u306e\u518d\u521d\u671f\u5316\uff08\u30d0\u30b9\u30ea\u30bb\u30c3\u30c8\uff09\u3001SPI\u3067\u306fCS\u4fe1\u53f7\u306e\u518d\u5236\u5fa1\u304c\u6709\u52b9\u3067\u3059\u3002\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u3001\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u3084CRC\u306a\u3069\u306e\u691c\u8a3c\u30b3\u30fc\u30c9\u3092\u7528\u3044\u305f\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u6a5f\u69cb\u3082\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u901a\u4fe1\u30a8\u30e9\u30fc\u3084EEPROM\u306e\u7d4c\u5e74\u52a3\u5316\u306b\u4f34\u3046\u8aa4\u66f8\u304d\u8fbc\u307f\u3092\u65e9\u671f\u306b\u691c\u51fa\u3057\u3001\u5805\u7262\u306a\u30b7\u30b9\u30c6\u30e0\u52d5\u4f5c\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 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