{"id":6830,"date":"2020-06-12T02:29:51","date_gmt":"2020-06-11T17:29:51","guid":{"rendered":"http:\/\/happytech.jp\/wordpress\/?p=6830"},"modified":"2020-06-19T02:25:18","modified_gmt":"2020-06-18T17:25:18","slug":"5v-tolerant-mcu-pad","status":"publish","type":"post","link":"https:\/\/happytech.jp\/wordpress\/2020\/06\/12\/5v-tolerant-mcu-pad\/","title":{"rendered":"MCU\u306e5V\u8010\u5727\u30d4\u30f3"},"content":{"rendered":"

\u5f0a\u793eFreeRTOS\u7fd2\u5f97\u30da\u30fc\u30b8<\/a>\u3067\u4f7f\u3046\u8a55\u4fa1\u30dc\u30fc\u30c9\uff1aLPCXpresso54114<\/a>\uff08Cortex-M4\/100MHz\u3001256KB Flash\u3001192KB RAM\uff09\u306f\u3001FreeRTOS\u3060\u3051\u3067\u306a\u304f\u3001Mbed OS<\/a>\u3084Zephyr OS<\/a>\u306a\u3069\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u7d44\u8fbc\u307fRTOS\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002\u591a\u304f\u306e\u60c5\u5831\u304c\u3042\u308aRTOS\u3092\u5b66\u3076\u306b\u306f\u9069\u3057\u305f\u8a55\u4fa1\u30dc\u30fc\u30c9\u3060\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\"LPCXpresso54114
LPCXpresso54114 Board power diagram\uff08\u51fa\u5178\uff1aUM10973\u306b\u52a0\u7b46\uff09<\/figcaption><\/figure>\n

\u3055\u3066\u3001\u3053\u306eLPCXpresso54114\u306e\u96fb\u5727\u30d6\u30ed\u30c3\u30af\u56f3\u304c\u4e0a\u56f3\u3067\u3059\u3002MCU\u306f\u30c7\u30d5\u30a9\u30eb\u30c83.3V\u52d5\u4f5c\u3001\u4f4e\u96fb\u529b\u52d5\u4f5c\u7528\u306b1.8V\u3082\u9078\u629e\u53ef\u80fd\u3067\u3059\u3002\u4e00\u65b9\u3001Arduino\u30b3\u30cd\u30af\u30bf\u3078\u306f\u3001\u5e38\u66425V\u304c\u4f9b\u7d66\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u672c\u7a3f\u306f\u3001\u3053\u306eMCU\u52d5\u4f5c\u96fb\u5727\u3068Arduino\u30b3\u30cd\u30af\u30bf\u306b\u63a5\u7d9a\u3059\u308b\u30bb\u30f3\u30b5\u306a\u3069\u306e\u52d5\u4f5c\u96fb\u5727\u304c\u7570\u306a\u3063\u3066\u3082\u5236\u5fa1\u3067\u304d\u308b\u4ed5\u7d44\u307f\u3092\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u8005\u5411\u3051\u306b\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n

MCU\u52d5\u4f5c\u96fb\u5727<\/h3>\n

\u9ad8\u901f\u5316\u3084\u4f4e\u96fb\u529b\u5316\u306e\u5e02\u5834\u8981\u6c42\u306b\u6cbf\u3046\u3088\u3046\u306bMCU\u52d5\u4f5c\u96fb\u5727\u306f\u30013.3V \u2192 3.0V \u2192 2.4V \u2192 1.8V\u3068\u4f4e\u4e0b\u3057\u3064\u3064\u3042\u308a\u307e\u3059\u3002\u540c\u6642\u306bMCU\u306b\u63a5\u7d9a\u3059\u308b\u30bb\u30f3\u30b5\u3084LCD\u306a\u3069\u306e\u88ab\u5236\u5fa1\u30c7\u30d0\u30a4\u30b9\u3082\u3001\u4f4e\u96fb\u5727\u5316\u3057\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u591a\u304f\u306e\u88ab\u5236\u5fa1\u30c7\u30d0\u30a4\u30b9\u306f\u3001\u672a\u3060\u306b5V\u52d5\u4f5c\u304c\u591a\u304f\u3001\u3057\u304b\u3082\u4f4e\u96fb\u5727\u30c7\u30d0\u30a4\u30b9\u306b\u6bd4\u3079\u5b89\u4fa1\u3067\u3059\u3002<\/p>\n

\u4f8b\u3048\u3070\u30015V\u52d5\u4f5cHD44780\u30b3\u30f3\u30d1\u30c1\u30d6\u30ebLCD\u306f1\u500b500\u5186<\/a>\u3001\u540c\u3058\u4ed5\u69d8\u30673.3V\u52d5\u4f5c\u7248\u306b\u306a\u308b\u30681\u500b550\u5186<\/a>\u306a\u3069\u3067\u3059\u3002\u203b\u5f0a\u793e\u30de\u30a4\u30b3\u30f3\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306b\u4f7f\u7528\u4e2d\u306embed-Xpresso Baseboard\u306b\u306f\u30015V HD44780\u30b3\u30f3\u30d1\u30c1\u30d6\u30ebLCD\u304c\u642d\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u30ec\u30d9\u30eb\u30b7\u30d5\u30bf<\/h3>\n

\u7570\u306a\u308b\u52d5\u4f5c\u96fb\u5727\u30c7\u30d0\u30a4\u30b9\u9593\u306e\u6700\u3082\u57fa\u672c\u7684\u306a\u63a5\u7d9a\u304c\u3001\u9593\u306b\u30ec\u30d9\u30eb\u30b7\u30d5\u30bf\u3092\u5165\u308c\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n

TI\uff09TXS0108E\uff1a8\u30d3\u30c3\u30c8\u30ec\u30d9\u30eb\u30b7\u30d5\u30bf\u30e2\u30b8\u30e5\u30fc\u30eb<\/a>\u306e\u4f8b\u3067\u793a\u3057\u307e\u3059\u3002\u4f4e\u5727A\u5074\u304c1.8V\u3001\u9ad8\u5727B\u5074\u304c3.3V\u306e\u52d5\u4f5c\u56f3\u3067\u3059\u3002A\u5074\u306eH\/L\u96fb\u5727\uff08\u8d64\uff09\u304c\u3001B\u5074\u306eH\/L\u96fb\u5727\uff08\u7dd1\uff09\u3078\u5909\u63db\u3055\u308c\u307e\u3059\uff08\u53cc\u65b9\u5411\u306a\u306e\u3067\u3001B\u5074\u304b\u3089A\u5074\u3078\u306e\u5909\u63db\u3082\u53ef\u80fd\u3067\u3059\uff09\u3002<\/p>\n

\"8\u30d3\u30c3\u30c8\u30ec\u30d9\u30eb\u30b7\u30d5\u30bfTXS0108E\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u52d5\u4f5c\uff08\u51fa\u5178\uff1aTI\uff1aTXS0108E\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\uff09\"
8\u30d3\u30c3\u30c8\u30ec\u30d9\u30eb\u30b7\u30d5\u30bfTXS0108E\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u52d5\u4f5c\uff08\u51fa\u5178\uff1aTI\uff1aTXS0108E\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\uff09<\/figcaption><\/figure>\n

\u30ec\u30d9\u30eb\u30b7\u30d5\u30bf\u5229\u7528\u6642\u306b\u306f\u3001\u96fb\u5727\u30ec\u30d9\u30eb\u306e\u5909\u63db\u3060\u3051\u3067\u306a\u304f\u3001\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\uff08\u30b9\u30d4\u30fc\u30c9\uff09\u3082\u91cd\u8981\u3067\u3059\u3002\u5341\u5206\u306a\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u304c\u3042\u308c\u3070\u30011.8V\u306eH\/L\u6ce2\u5f62\u306f\u3001\u305d\u306e\u307e\u307e3.3V\u306eH\/L\u6ce2\u5f62\u3078\u5909\u63db\u3055\u308c\u307e\u3059\u304c\u3001\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u304c\u9045\u3044\u3068\u6ce2\u5f62\u304c\u5d29\u308c\u3001\u9001\u308a\u5074\u306eH\/L\u4fe1\u53f7\u304c\u53d7\u3051\u5074\u3078\u6b63\u78ba\u306b\u4f1d\u308f\u308a\u307e\u305b\u3093\u3002<\/p>\n

\u4f8b\u3048\u3070\u3001LCD\u5236\u5fa1\u306f\u3001\u8907\u6570\u306eLCD\u30b3\u30de\u30f3\u30c9\u3092MCU\u304b\u3089LCD\u3078\u9001\u4fe1\u3057\u3066\u884c\u308f\u308c\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u304c\u9045\u3044\u5834\u5408\u306b\u306f\u3001\u30b3\u30de\u30f3\u30c9\u304c\u6b63\u3057\u304f\u4f1d\u308f\u3089\u305a\u5236\u5fa1\u304c\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n

MCU\u306e\uff15V\u8010\u5727\u30d4\u30f3\uff1a5V Tolerant MCU Pad<\/h2>\n

LPCXpresso54114\u306eGPIO\u30d4\u30f3\u306b\u306f\u30015V\u8010\u5727\u3068\u3044\u3046\u5c5e\u6027\u304c\u3042\u308a\u307e\u3059\u3002PIO0_0\u306e[2]\u304c5V\u8010\u5727\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\"LPCLPCXpresso54114\u306e5V\u8010\u5727\u5c5e\u6027\uff08\u51fa\u5178\uff1a5411x\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\uff09\"
LPCLPCXpresso54114\u306e5V\u8010\u5727\u5c5e\u6027\uff08\u51fa\u5178\uff1a5411x\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\uff09<\/figcaption><\/figure>\n

5V\u8010\u5727\u3092\u7c21\u5358\u306b\u8aac\u660e\u3059\u308b\u3068\u3001\u300c\u52d5\u4f5c\u96fb\u5727\u304c3.3\/1.8V MCU\u306ePIO0_0\u306b\u30015V\u30c7\u30d0\u30a4\u30b9\u3092\u30ec\u30d9\u30eb\u30b7\u30d5\u30bf\u306f\u4f7f\u308f\u305a\u306b\u76f4\u63a5\u63a5\u7d9a\u3057\u3066\u3082\u3001H\/L\u4fe1\u53f7\u304c\u30c7\u30d0\u30a4\u30b9\u3078\u9001\u53d7\u4fe1\u3067\u304d\u308b\u300d\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u307e\u305f\u306f\u3001\u300cPIO0_0\u306b\u30011\u30d3\u30c3\u30c8\u306e5V\u30ec\u30d9\u30eb\u30b7\u30d5\u30bf\u5185\u8535\u300d\u3068\u89e3\u91c8\u3057\u3066\u3082\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u203b\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u62c5\u5f53\u8005\u304b\u3089\u306f\u30af\u30ec\u30fc\u30e0\u304c\u6765\u305d\u3046\u306a\u8aac\u660e\u3067\u3059\u304c\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u958b\u767a\u8005\u5411\u3051\u306e\u7c21\u5358\u8aac\u660e\u3067\u3059\u3002\u30af\u30ec\u30fc\u30e0\u306e\u5185\u5bb9\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u62c5\u5f53\u306e\u540c\u50da\u3078\u89e3\u8aac\u3057\u3066\u304f\u3060\u3055\u3044😌\u3002<\/p>\n

\u5168\u3066\u306eGPIO\u30d4\u30f3\u304c5V\u8010\u5727\u3067\u306f\u7121\u3044\u70b9\u306b\u306f\u3001\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u4f46\u3057\u3001Arduino\u30b3\u30cd\u30af\u30bf\u306eGPIO\u30d4\u30f3\u306f\u30015V\u8010\u5727\u3092\u6301\u3064\u3082\u306e\u304c\u591a\u3044\u30cf\u30ba\u3067\u3059\u3002\u63a5\u7d9a\u5148\u30c7\u30d0\u30a4\u30b9\u304c5V\u52d5\u4f5c\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n

\u307e\u305f\u3001I2C\/SPI\u30d0\u30b9\u3067\u63a5\u7d9a\u3059\u308b\u30c7\u30d0\u30a4\u30b9\u3082\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3067\u3082\u3001MCU\u5074\u306eI2C\/SPI\u96fb\u5727\u30ec\u30d9\u30eb\u3068\u30c7\u30d0\u30a4\u30b9\u5074\u306eI2C\/SPI\u96fb\u5727\u30ec\u30d9\u30eb\u304c\u7570\u306a\u308b\u5834\u5408\u306b\u306f\u3001\u30ec\u30d9\u30eb\u30b7\u30d5\u30bf\u304c\u5fc5\u8981\u3067\u3059\u3002MCU\u5074I2C\/SPI\u30dd\u30fc\u30c8\u306b5V\u8010\u5727\u5c5e\u6027\u304c\u3042\u308b\u5834\u5408\u306b\u306f\u3001GPIO\u540c\u69d8\u76f4\u63a5\u63a5\u7d9a\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n

I2C\u30d0\u30b9\u306f\u3001SDA\/SCL\u306e2\u672c\u5236\u5fa1\uff08SPI\u306a\u30893\u672c\uff09\u3067GPIO\u306b\u6bd4\u3079MCU\u4f7f\u7528\u30d4\u30f3\u6570\u304c\u5c11\u306a\u3044\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u306e\u4ee3\u308f\u308a\u306b\u901a\u4fe1\u901f\u5ea6\u304c400KHz\u306a\u3069\u9ad8\u901f\u306b\u306a\u308b\u306e\u3067\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u3078\u306e\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n

LPCXpresso54114\u4ee5\u5916\u306b\u30825V\u8010\u5727\u30d4\u30f3\u3092\u6301\u3064MCU\u306f\u3001\u5404\u793e\u304b\u3089\u767a\u58f2\u4e2d\u3067\u3059\u3002\u3061\u306a\u307f\u306b\u3001\u30de\u30a4\u30b3\u30f3\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u9069\u7528\u306eMCU<\/a>\u306f\u30016\u672c\u306e5V\u8010\u5727GPIO\u3092\u4f7f\u3063\u3066mbed-Xpresso Baseboard\u642d\u8f095V LCD\u3092\u76f4\u63a5\u5236\u5fa1\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\"mbed-Xpresso
mbed-Xpresso Baseboard\u642d\u8f095V HD44780\u30b3\u30f3\u30d1\u30c1LCD\u306e3.3V STM32G071RB\u76f4\u63a5\u5236\u5fa1\u4f8b<\/figcaption><\/figure>\n

5V\u8010\u5727MCU\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u78ba\u8a8d\u65b9\u6cd5<\/h2>\n

MCU\u306eGPIO\u3084I2C\/SPI\u3092\u4f7f\u3063\u3066\u5916\u90e8\u30bb\u30f3\u30b5\u3084LCD\u306a\u3069\u306e\u30c7\u30d0\u30a4\u30b9\u3092\u5236\u5fa1\u3059\u308b\u5834\u5408\u3001\u4e0b\u8a18\u9805\u76ee\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

    \n
  1. MCU\u52d5\u4f5c\u96fb\u5727\u3068\u88ab\u5236\u5fa1\u30c7\u30d0\u30a4\u30b9\u52d5\u4f5c\u96fb\u5727\u306f\u540c\u3058\u304b\uff1f<\/li>\n
  2. MCU\u52d5\u4f5c\u96fb\u5727\u3068\u88ab\u5236\u5fa1\u30c7\u30d0\u30a4\u30b9\u52d5\u4f5c\u96fb\u5727\u304c\u7570\u306a\u308b\u5834\u5408\u3001\u5916\u4ed8\u3051\u30ec\u30d9\u30eb\u30b7\u30d5\u30bf\u3092\u7528\u3044\u308b\u304b\u3001\u307e\u305f\u306fMCU\u5185\u85355V\u8010\u5727\u30d4\u30f3\u3092\u7528\u3044\u308b\u304b\uff1f<\/li>\n
  3. MCU\u5185\u85355V\u8010\u5727GPIO\u3084I2C\/SPI\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u3001\u305d\u306e\u30c7\u30fc\u30bf\u30ec\u30fc\u30c8\u306f\u3001\u5236\u5fa1\u306b\u5341\u5206\u9ad8\u901f\u304b\uff1f<\/li>\n<\/ol>\n

    5V\u8010\u5727\u30d4\u30f3\u306f\u3001\u4f7f\u7528\u3059\u308bMCU\u6bce\u306b\u4ed5\u69d8\u304c\u7570\u306a\u308a\u307e\u3059\u3002MCU\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306f\u3001\u82f1\u8a9e\u7248\u306a\u3089\u300ctolerant\u300d\u3001\u65e5\u672c\u8a9e\u7248\u306a\u3089\u300c\u8010\u5727\u300d\u3067\u691c\u7d22\u3059\u308b\u3068\u5185\u5bb9\u78ba\u8a8d\u304c\u7d20\u65e9\u304f\u3067\u304d\u307e\u3059👍\u3002<\/p>\n

    MCU\u52d5\u4f5c\u96fb\u5727\u3068\u63a5\u7d9a\u30c7\u30d0\u30a4\u30b9\u52d5\u4f5c\u96fb\u5727\u304c\u7570\u306a\u3063\u3066\u3082\u3001MCU\u306eH\/L\u4fe1\u53f7\u304c\u88ab\u5236\u5fa1\u30c7\u30d0\u30a4\u30b9\u3078\u6b63\u3057\u304f\u4f1d\u308f\u308c\u3070\u30c7\u30d0\u30a4\u30b9\u3092\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002<\/p>\n

    MCU\u52d5\u4f5c\u96fb\u5727\u306b\u5408\u308f\u305b\u305f\u30c7\u30d0\u30a4\u30b9\u9078\u5b9a\u3084\u30ec\u30d9\u30eb\u30b7\u30d5\u30bf\u8ffd\u52a0\u306a\u3089\u3070\u8a71\u306f\u7c21\u5358\u3067\u3059\u304c\u3001\u30c8\u30fc\u30bf\u30eb\u30b3\u30b9\u30c8\u3084\u5c06\u6765\u306e\u62e1\u5f35\u6027\u306a\u3069\u3092\u691c\u8a0e\u3057\u30015V\u8010\u5727\u30d4\u30f3\u306e\u6d3b\u7528\u3082\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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