{"id":1745,"date":"2017-07-06T14:11:12","date_gmt":"2017-07-06T05:11:12","guid":{"rendered":"http:\/\/flogics.com\/wp\/?p=1745"},"modified":"2023-09-05T21:38:52","modified_gmt":"2023-09-05T12:38:52","slug":"nxp-lpc810m-%e3%81%a7%e3%80%81deep-power-%e3%83%a2%e3%83%bc%e3%83%89%e3%82%92%e8%a9%a6%e3%81%97%e3%81%a6%e3%81%bf%e3%82%8b","status":"publish","type":"post","link":"https:\/\/flogics.com\/wp\/2017\/07\/nxp-lpc810m-%e3%81%a7%e3%80%81deep-power-%e3%83%a2%e3%83%bc%e3%83%89%e3%82%92%e8%a9%a6%e3%81%97%e3%81%a6%e3%81%bf%e3%82%8b\/","title":{"rendered":"NXP LPC810M \u3067\u3001Deep power-down \u30e2\u30fc\u30c9\u3092\u8a66\u3057\u3066\u307f\u308b"},"content":{"rendered":"<p>Evaluated &#8220;Deep power-down mode&#8221; of NXP LPC810M.<\/p>\n<p>\u4ee5\u524d\u3001LPC810M \u3067<a href=\"\/wp\/2016\/01\/dip-8%E3%83%94%E3%83%B3-arm-cortex-m0-%E3%83%9E%E3%82%A4%E3%82%B3%E3%83%B3%E3%82%92%E8%A9%A6%E3%81%99\/\">\u300cL \u30c1\u30ab\u300d\uff08LED \u30c1\u30ab\u30c1\u30ab\uff09\u3092\u3057\u3066\u307f\u307e\u3057\u305f<\/a>\u304c\u3001\u4eca\u56de\u306f\u5b9a\u671f\u7684\u306b\u30b9\u30ea\u30fc\u30d7\u30e2\u30fc\u30c9\u306b\u5165\u308a\u6d88\u8cbb\u96fb\u529b\u3092\u6291\u3048\u308b\u5b9f\u9a13\u3092\u3057\u3066\u307f\u307e\u3057\u305f\u3002\u7279\u306b\u3001\u3082\u3063\u3068\u3082\u6d88\u8cbb\u96fb\u6d41\u306e\u5c0f\u3055\u3044 Deep power-down \u30e2\u30fc\u30c9\u3068\u3044\u3046\u3082\u306e\u3092\u8a55\u4fa1\u3057\u3066\u307f\u307e\u3057\u305f\u3002\u3046\u307e\u304f\u5b9f\u88c5\u3059\u308b\u3068\u3001\u30b9\u30ea\u30fc\u30d7\u671f\u9593\u4e2d\u306e\u6d88\u8cbb\u96fb\u6d41\u3092 1 uA\uff08\u30de\u30a4\u30af\u30ed\u30a2\u30f3\u30da\u30a2\uff09\u7a0b\u5ea6\u306b\u6291\u3048\u3089\u308c\u308b\u3088\u3046\u3067\u3059\u3002\uff08\u305f\u3060\u3057\u3001\u30e1\u30e2\u30ea\u56de\u8def\u3078\u306e\u96fb\u6d41\u3082\u30ab\u30c3\u30c8\u3057\u3066\u3057\u307e\u3046\u306e\u3067\u3001\u5fa9\u5e30\uff08\u4ee5\u4e0b wakeup \u3068\u547c\u3076\uff09\u6642\u306f\u30ea\u30bb\u30c3\u30c8\u52d5\u4f5c\u3068\u300c\u307b\u307c\u300d\u540c\u7b49\u306b\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001main() \u30eb\u30fc\u30c1\u30f3\u304b\u3089\u5b9f\u884c\u3057\u76f4\u3057\u306b\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30d1\u30ef\u30fc\u30aa\u30f3\u30ea\u30bb\u30c3\u30c8\u306a\u306e\u304b Deep power-down \u30e2\u30fc\u30c9\u304b\u3089\u306e wakeup \u306a\u306e\u304b\u306f\u3001\u30ec\u30b8\u30b9\u30bf\u3092\u898b\u308b\u3068\u5206\u304b\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\uff09<\/p>\n<p>\u4e16\u306e\u4e2d\u306b\u306f\u3044\u308d\u3044\u308d\u3068\u53c2\u8003\u306b\u306a\u308b\u30b5\u30a4\u30c8\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4eca\u56de\u306f\u52c9\u5f37\u3092\u517c\u306d\u3066\u3001\u307e\u305a\u306f\u30e6\u30fc\u30b6\u30fc\u30de\u30cb\u30e5\u30a2\u30eb\u3060\u3051\u3092\u5143\u306b\u5b9f\u88c5\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<h3>\u307e\u305a\u306f\u30de\u30cb\u30e5\u30a2\u30eb\u3092\u8aad\u3080<\/h3>\n<p><a href=\"http:\/\/www.nxp.com\/docs\/en\/user-guide\/UM10601.pdf\">LPC81x User manual\uff08UM10601\uff09<\/a>\uff08\u4ee5\u4e0b\u3001\u30e6\u30fc\u30b6\u30fc\u30de\u30cb\u30e5\u30a2\u30eb\u3068\u547c\u3073\u307e\u3059\uff09\u306e 5.5\u7bc0\uff08LPC81x Reduced power modes and Power Management, General description\uff09\u3092\u898b\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8aac\u660e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<blockquote><p>3. Deep power-down mode:<\/p>\n<p>For maximal power savings, the entire system is shut down except for the general purpose registers in the PMU and the self wake-up timer. Only the general purpose registers in the PMU maintain their internal states. The part can wake up on a pulse on the WAKEUP pin or when the self wake-up timer times out. On wake-up, the part reboots.<\/p><\/blockquote>\n<p>\u3064\u307e\u308a\u3001\u3053\u306e\u30e2\u30fc\u30c9\u3067\u306f\u5916\u90e8\u304b\u3089 WAKEUP \u30d4\u30f3\u3092\u30c8\u30ea\u30ac\u3057\u3066\u3084\u308b\u304b\u3001wake-up \u30bf\u30a4\u30de\u3068\u3044\u3046\u3082\u306e\u3092\u4f7f\u3063\u3066\u30b9\u30ea\u30fc\u30d7\u304b\u3089 wakeup \u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u30bf\u30a4\u30de\u3092\u4f7f\u3063\u3066\u307f\u305f\u3044\u306e\u3067\u3001\u4eca\u5ea6\u306f 13\u7bc0\uff08LPC81x Self wake-up timer (WKT)\uff09\u3092\u8aad\u3093\u3067\u307f\u307e\u3057\u3087\u3046\u3002\u3053\u306e WKT \u3092\u4f7f\u3046\u306b\u306f\u300113.3\u7bc0\u306b\u3088\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n<ol>\n<li>SYSCON \u306e SYSAHBCLKCTRL \u30ec\u30b8\u30b9\u30bf\u3092\u8a2d\u5b9a\u3057\u3001WKT \u56de\u8def\u3078\u306e\u5236\u5fa1\u30af\u30ed\u30c3\u30af\u3092\u30aa\u30f3\u306b\u3059\u308b\u3002<\/li>\n<li>SYSCON \u306e\u00a0PRESETCTRL \u30ec\u30b8\u30b9\u30bf\u3092\u8a2d\u5b9a\u3057\u3001WKT \u56de\u8def\u306e\u30ea\u30bb\u30c3\u30c8\u72b6\u614b\u3092\u30af\u30ea\u30a2\u3059\u308b\u3002<\/li>\n<li>PMU \u306e\u00a0DPDCTRL \u30ec\u30b8\u30b9\u30bf\u3092\u8a2d\u5b9a\u3057\u3001low-power \u30aa\u30b7\u30ec\u30bf\u30fc\u3092\u6709\u52b9\u306b\u3059\u308b\u3002\uff08LPOSCEN \u3068 LPOSCDPDEN \u3092enable \u306b\u3059\u308b\u3002\uff09<\/li>\n<li>SYSCON \u306e\u00a0PDRUNCFG \u30ec\u30b8\u30b9\u30bf\u3092\u8a2d\u5b9a\u3057\u3001IRC \u3068 IRCOUT \u3092\u6709\u52b9\uff08powered\uff09\u306b\u3057\u3066\u304a\u304f\u3002\uff08\u901a\u5e38\u306f powered \u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u7279\u306b\u4eca\u56de\u306f\u3044\u3058\u308a\u307e\u305b\u3093\u3002\uff09<\/li>\n<li>5.7.1\u7bc0\u3092\u53c2\u8003\u306b\u3001power down \u30e2\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3002<\/li>\n<\/ol>\n<p>\u306a\u304a\u30013\u7bc0\uff08LPC81x Nested Vectored Interrupt Controller (NVIC)\uff09\u306e Table 3 \u3092\u898b\u308b\u3068\u3001WKT \u5272\u8fbc\u306f NVIC \u306e #15 \u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u304c\u3001\u4eca\u56de\u306f WKT \u5272\u8fbc\u306f\u4f7f\u3044\u307e\u305b\u3093\u3002WFI \u547d\u4ee4\u3092\u5b9f\u884c\u3059\u308b\u3084\u5426\u3084\u3001\u30b7\u30b9\u30c6\u30e0\u304c Deep power-down \u30e2\u30fc\u30c9\u306b\u5165\u3063\u3066\u3057\u307e\u3044\u3001wakeup \u3057\u305f\u3068\u304d\u306b\u306f\u30ea\u30bb\u30c3\u30c8\u304b\u3089\u518d\u958b\u3057\u307e\u3059\u3002\uff08\u3064\u307e\u308a\u3001WKT \u5272\u8fbc\u304c\u767a\u751f\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u304c\u306a\u3044\u3002\uff09<\/p>\n<p>\u307e\u305f\u300113.3\u7bc0\u306b\u306f\u66f8\u304b\u308c\u3066\u3044\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u5b9f\u969b\u306b\u306f\u4e0a\u8a18\u624b\u9806\u306e 4 \u3068 5 \u306e\u9593\u3067\u3001WKT \u81ea\u8eab\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>WKT \u306e CTRL \u30ec\u30b8\u30b9\u30bf\u3092\u8a2d\u5b9a\u3057\u3001CLKSEL \u3092 low power clock \u306b\u3001\u307e\u305f ALARMFLAG \u3092\u30af\u30ea\u30a2\u3057\u3001CLEARCTR \u3067\u30ab\u30a6\u30f3\u30bf\u3092\u30af\u30ea\u30a2\u3057\u3066\u304a\u304f\u3002<\/li>\n<\/ul>\n<p>\u3055\u3066\u30015.7.1\u7bc0\u306b\u79fb\u308a\u307e\u3057\u3087\u3046\u3002\u4eca\u56de\u3001\u4f7f\u3044\u305f\u3044\u306e\u306f Deep power-down \u30e2\u30fc\u30c9\u306a\u306e\u3067\u3001\u3055\u3089\u306b 5.7.7 \u7bc0\u306b\u9032\u307f\u307e\u3059\u3002\u3061\u306a\u307f\u306b\u3053\u3053\u3092\u8aad\u3080\u3068\u3001\/RESET \u30d4\u30f3\u3092\u5916\u90e8\u7684\u306b\u30d7\u30eb\u30a2\u30c3\u30d7\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002\u5f8c\u8ff0\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ce\u30fc\u30c8\u306b\u3088\u308b\u3068\u300110\u301c47k\u03a9 \u3067\u30d7\u30eb\u30a2\u30c3\u30d7\u3059\u308b\u306e\u304c\u9069\u5207\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f Deep power-down \u30e2\u30fc\u30c9\u306e\u4e2d\u3067\u3082 WKT \u306b\u3088\u308b wakeup \u3092\u3057\u305f\u3044\u306e\u3067\u30015.7.7.4\u7bc0\uff08Programming Deep power-down mode using the self-wake-up timer\uff09\u3092\u53c2\u8003\u306b\u3057\u307e\u3059\u3002\u624b\u9806\u3068\u3057\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>PMU \u306e DPDCTRL \u30ec\u30b8\u30b9\u30bf\u3092\u8a2d\u5b9a\u3059\u308b\u3002\u65e2\u306b\u4e0a\u8ff0\u306e\u901a\u308a\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u306e\u3067\u3059\u304c\u3001\u5b9f\u306f\u3053\u3053\u3067\u30de\u30cb\u30e5\u30a2\u30eb\u306b\u660e\u8a18\u3055\u308c\u3066\u3044\u306a\u3044\u70b9\u3068\u3057\u3066\u3001WAKEPAD_DISABLE \u3068\u3044\u3046\u30d3\u30c3\u30c8\u306b 1 \u3092\u8a2d\u5b9a\u3057\u3066 WAKEUP \u30d4\u30f3\u3092 disable \u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u3057\u306a\u3044\u3068\u3001WFI \u547d\u4ee4\u3067\u30b9\u30ea\u30fc\u30d7\u3055\u305b\u305f\u3064\u3082\u308a\u304c\u3059\u3050\u306b wakeup \u3057\u3066\u3057\u307e\u3046\u3001\u3068\u3044\u3046\u73fe\u8c61\u304c\u767a\u751f\u3057\u307e\u3059\u3002\uff08\u79c1\u306f\u3053\u308c\u3067\u3057\u3070\u3089\u304f\u60a9\u3093\u3060\u3002\uff09<\/li>\n<li>PMU \u306e PCON \u30ec\u30b8\u30b9\u30bf\u3092\u8a2d\u5b9a\u3057\u3001NODPD \u3092\u30af\u30ea\u30a2\u3057\u3001PM \u306b\u306f 0x3 \u3092\u66f8\u304d\u8fbc\u3080\u3002<\/li>\n<li>\u5fc5\u8981\u306a\u3089\u3070\u3001PMU \u306e GPREG[0:3] \u30ec\u30b8\u30b9\u30bf\u306b\u60c5\u5831\u3092\u66f8\u304d\u8fbc\u3093\u3067\u304a\u304f\u3002\u3053\u306e\u60c5\u5831\u306f\u3001Deep power-down \u30e2\u30fc\u30c9\u3067\u3082\u4fdd\u6301\u3055\u308c\u3001wakeup \u5f8c\u306e\u30ea\u30bb\u30c3\u30c8\u3067\u3082\u30af\u30ea\u30a2\u3055\u308c\u307e\u305b\u3093\u3002main() \u30eb\u30fc\u30c1\u30f3\u306e\u4e2d\u3067\u3001\u305d\u306e\u8d77\u52d5\u304c\u30d1\u30ef\u30fc\u30aa\u30f3\u30ea\u30bb\u30c3\u30c8\u306a\u306e\u304b\u3001Deep power-down \u30e2\u30fc\u30c9\u304b\u3089\u306e wakeup \u306a\u306e\u304b\u5224\u65ad\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>ARM \u30b3\u30a2\u306e SCR \u30ec\u30b8\u30b9\u30bf\u3092\u8a2d\u5b9a\u3057\u3001SLEEPDEEP \u30d3\u30c3\u30c8\u3092\u30aa\u30f3\u306b\u3057\u3066\u304a\u304f\u3002<\/li>\n<li>WKT \u306e COUNT \u30ec\u30b8\u30b9\u30bf\u3092\u8a2d\u5b9a\u3057\u3001\u3069\u306e\u304f\u3089\u3044\u306e\u6642\u9593\u304c\u7d4c\u904e\u3057\u305f\u3089 Deep power-down \u30e2\u30fc\u30c9\u304b\u3089 wakeup \u3059\u308b\u304b\u3092\u6307\u5b9a\u3059\u308b\u3002WKT \u30ab\u30a6\u30f3\u30bf\u306f low-power \u30aa\u30b7\u30ec\u30bf\u30fc\uff0810kHz\uff09\u3067\u30ab\u30a6\u30f3\u30c8\u3055\u305b\u308b\u306e\u3067\u3001\u30ab\u30a6\u30f3\u30bf\u5024 10000\u3067 1\u79d2\u9593\u306e\u30b9\u30ea\u30fc\u30d7\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u6700\u5f8c\u306b\u3001WFI \u547d\u4ee4\u3092\u767a\u884c\u3059\u308b\u3002<\/li>\n<\/ol>\n<h3>\u5b9f\u969b\u306b\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u307f\u308b<\/h3>\n<p>\u4ee5\u4e0b\u306b\u30b3\u30fc\u30c9\u3092\u307e\u3068\u3081\u3066\u304a\u304d\u307e\u3059\u3002Keil uVision \u3067 LPC810M \u7528\u306e PACK \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u304a\u304f\u3068\u3001LPC8xx.h \u3068\u3044\u3046\u30d8\u30c3\u30c0\u30d5\u30a1\u30a4\u30eb\u306e\u5b9a\u7fa9\u3067\u30b3\u30f3\u30d1\u30a4\u30eb\u3067\u304d\u308b\u3068\u601d\u3044\u307e\u3059\u3002<a href=\"\/wp\/2016\/01\/dip-8%E3%83%94%E3%83%B3-arm-cortex-m0-%E3%83%9E%E3%82%A4%E3%82%B3%E3%83%B3%E3%82%92%E8%A9%A6%E3%81%99\/\">\u524d\u56de\u306e\u8a18\u4e8b<\/a>\u3082\u5fa1\u53c2\u8003\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre>#include &lt;LPC8xx.h&gt;\r\n\r\n\/\/ ...\r\n\r\n\/*\r\n * delay() \u95a2\u6570\u306f\u3001LPC810M \u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9 Blinky \u3088\u308a\u501f\u7528\r\n *\/\r\nvoid delay(uint32_t delay_ticks)\r\n{\r\n\u00a0 \u00a0 uint32_t cur_ticks;\r\n\r\n\u00a0 \u00a0 cur_ticks = ms_ticks;\r\n\u00a0 \u00a0 while ((ms_ticks - cur_ticks) &lt; delay_ticks)\r\n\u00a0 \u00a0 \u00a0 \u00a0 __NOP();\r\n}\r\n\r\n\/\/ ...\r\nint main(void)\r\n{\r\n    int from_deep_power_down = 0;\r\n\r\n\u00a0 \u00a0 if (LPC_PMU-&gt;PCON &amp; (1 &lt;&lt; 11))\r\n\u00a0 \u00a0 \u00a0 \u00a0 from_deep_power_down = 1;            \/\/ Deep power-down \u304b\u3089\u306e wakeup \u304b\u3069\u3046\u304b\u78ba\u8a8d\r\n\r\n    NVIC_DisableIRQ(WKT_IRQn);               \/\/ \u5ff5\u306e\u305f\u3081\r\n\r\n    \/*\r\n     * \u3053\u306e\u8fba\u306f\u3001LPC810M \u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9 Blinky \u3088\u308a\r\n     *\/\r\n\u00a0 \u00a0 SystemCoreClockUpdate();\r\n\u00a0 \u00a0 LED_Initialize();\r\n\u00a0 \u00a0 SysTick_Config(SystemCoreClock \/ 1000);\r\n\r\n\u00a0 \u00a0 \/*\r\n\u00a0\u00a0 \u00a0 * Refer 13.3 of UM10601\r\n\u00a0\u00a0 \u00a0 *\/\r\n\u00a0 \u00a0 LPC_SYSCON-&gt;SYSAHBCLKCTRL |= 1 &lt;&lt; 9;\u00a0 \u00a0 \u00a0 \u00a0 \/\/ enable WKT (wake-up timer)\r\n\u00a0 \u00a0 LPC_SYSCON-&gt;PRESETCTRL |= 1 &lt;&lt; 9; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ clear WKT reset\r\n\r\n\u00a0 \u00a0 \/*\r\n\u00a0\u00a0 \u00a0 * \u3053\u3053\u3067 10 msec \u7a0b\u5ea6\u306e\u9045\u5ef6\u3092\u5165\u308c\u3066\u304a\u304b\u306a\u3044\u3068\u3001\u306a\u305c\u304b\u6700\u521d\u306e\u30d1\u30ef\u30fc\u30aa\u30f3\u30ea\u30bb\u30c3\u30c8\u6642\u306e\r\n     * WFI \u3067\u3001\u3059\u3050\u306b\u8d77\u304d\u3066\u304d\u3066\u3057\u307e\u3046\u3002\u30de\u30cb\u30e5\u30a2\u30eb\u3068\u304b\u8abf\u3079\u305f\u3051\u3069\u5206\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\r\n\u00a0\u00a0 \u00a0 *\/\r\n\u00a0 \u00a0 delay(10);\r\n\r\n\u00a0 \u00a0 LPC_PMU-&gt;DPDCTRL = 0 &lt;&lt; 0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ (wakeup pin is not used)\r\n\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 | 1 &lt;&lt; 1 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ need to disable wakeup pin\r\n\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 | 1 &lt;&lt; 2 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ enable LPO for WKT\r\n\u00a0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 | 1 &lt;&lt; 3;\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ also in deep power-down\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ (refer 5.7.7.4)\r\n\r\n\u00a0 \u00a0 \/*\r\n\u00a0\u00a0 \u00a0 * Configure for Deep power-down mode using self-wake-up timer\r\n\u00a0\u00a0 \u00a0 *\r\n\u00a0\u00a0 \u00a0 * Refer 5.7.1 of UM10601\r\n\u00a0\u00a0 \u00a0 * Refer 5.7.7.4 of UM10601\r\n\u00a0\u00a0 \u00a0 *\/\r\n\u00a0 \u00a0 LPC_WKT-&gt;CTRL = 1 &lt;&lt; 0\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ select LPO clock\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 | 1 &lt;&lt; 1\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ clear timeout\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 | 1 &lt;&lt; 2; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ clear the WKT\r\n\r\n\u00a0 \u00a0 LPC_PMU-&gt;PCON = 3;\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ Deep power-down mode\r\n\u00a0 \u00a0 SCB-&gt;SCR |= 1 &lt;&lt; 2; \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/ SLEEPDEEP = 1\r\n\r\n    \/*\r\n     * \u3053\u3053\u3067\u3001\u5fc5\u8981\u306a\u4ed5\u4e8b\uff08\u51e6\u7406\uff09\u3092\u3057\u307e\u3059\u3002L \u30c1\u30ab\u3068\u304b\u3002\r\n     *\/\r\n    something_to_do();\r\n\r\n    \/*\r\n     * \u5c11\u3057\u6642\u9593\u3092\u304a\u304b\u306a\u3044\u3068\u3001\u3042\u3068\u3067\u30c7\u30d0\u30c3\u30ac\u304b\u3089\u30d5\u30e9\u30c3\u30b7\u30e5\u30e1\u30e2\u30ea\u3092\r\n     * \u6d88\u3057\u305f\u308a\u3067\u304d\u306a\u304f\u306a\u308b\u3068\u56f0\u308b\u306e\u3067\u3001\u30c7\u30d0\u30c3\u30b0\u4e2d\u306f\u30a6\u30a7\u30a4\u30c8\u3092\u5165\u308c\u3066\u304a\u304d\u307e\u3059\u3002\r\n     * \uff08Deep power-down \u30e2\u30fc\u30c9\u306b\u5165\u308b\u3068\u3001\u30c7\u30d0\u30c3\u30ac\u63a5\u7d9a\u304c\u5207\u308c\u3066\u3057\u307e\u3046\u3002\uff09\r\n     * LED \u3068\u304b\u70b9\u706f\u3057\u3066\u304a\u304f\u3068\u3001\u30a6\u30a7\u30a4\u30c8\u4e2d\u304b\u3069\u3046\u304b\u304c\u5206\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u3002\r\n     *\/\r\n\u00a0 \u00a0 delay(1000);\r\n\r\n    \/*\r\n     * \u305d\u308c\u3067\u306f\u300110\u79d2\u9593\u3001\u304a\u4f11\u307f\u306a\u3055\u3044zzz\r\n     *\/\r\n\u00a0 \u00a0 LPC_WKT-&gt;COUNT = 10 * 10000;\r\n\u00a0 \u00a0 __WFI();\r\n}<\/pre>\n<h3>\u56de\u8def\u4e0a\u306e\u6ce8\u610f\u70b9<\/h3>\n<p>LPC810M \u306f\u901a\u5e38\u3001\/RESET \u30d4\u30f3\u3092\u30aa\u30fc\u30d7\u30f3\u306e\u307e\u307e\u3067\u3082\u52d5\u3044\u3066\u3057\u307e\u3044\u307e\u3059\u304c\u3001Deep power-down \u30e2\u30fc\u30c9\u4e2d\u306b \/RESET \u30d4\u30f3\u304c\u30aa\u30fc\u30d7\u30f3\u3060\u3068\u6d88\u8cbb\u96fb\u6d41\u304c\u5897\u3048\u308b\u305d\u3046\u306a\u306e\u3067\uff08\u5b9f\u6e2c 10 uA \u7a0b\u5ea6\uff09\u300110\u301c47k\u03a9\u7a0b\u5ea6\u3067\u30d7\u30eb\u30a2\u30c3\u30d7\u3057\u3066\u304a\u304f\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\u305d\u3046\u3059\u308b\u3068\u3001\u3060\u3044\u305f\u3044 1 uA \u7a0b\u5ea6\u306b\u53ce\u307e\u308a\u307e\u3059\u3002\uff08\u30c7\u30d0\u30c3\u30ac\u304c\u7e4b\u304c\u3063\u3066\u3044\u308b\u3068\u96fb\u6d41\u5024\u304c\u843d\u3061\u306a\u3044\u3053\u3068\u304c\u3042\u308b\u306e\u3067\u3001\u30c7\u30d0\u30c3\u30ac\u7b49\u3092\u5916\u3057\u3066\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\uff09<\/p>\n<p>\u3082\u3046\u4e00\u70b9\u3002WKT\uff08\u30bf\u30a4\u30de\uff09\u3092\u4f7f\u3063\u3066 wakeup \u3055\u305b\u308b\u5834\u5408\u306b\u306f\u3001WAKEUP \u30d4\u30f3\u306f\u30aa\u30fc\u30d7\u30f3\uff08\u7121\u63a5\u7d9a\uff09\u306b\u3057\u3066\u304a\u304b\u306a\u3044\u3068\u307e\u305a\u3044\u3088\u3046\u3067\u3059\u3002WAKEPAD_DISABLE \u3092 1 \u306b\u8a2d\u5b9a\u3057\u3066\u304a\u3044\u3066\u3082\u3001WAKEUP \u30d4\u30f3\u3092 V_DD \u3084 GND \u306b\u63a5\u7d9a\u3057\u305f\u308a\u3059\u308b\u3068\u3001\u5916\u90e8\u7684\u306b wakeup \u3057\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u5b9f\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ce\u30fc\u30c8\u304c\u3042\u3063\u305f<\/h3>\n<p>\u3060\u3044\u3060\u3044\u305d\u3046\u3044\u3046\u3082\u306e\u306a\u306e\u3067\u3059\u304c\u3001\u5f8c\u306b\u306a\u3063\u3066\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30ce\u30fc\u30c8\u3092\u898b\u3064\u3051\u307e\u3057\u305f\u3002\u3053\u306e<a href=\"http:\/\/www.nxp.com\/products\/microcontrollers-and-processors\/arm-processors\/lpc-cortex-m-mcus\/lpc800-series-cortex-m0-plus-mcus\/low-cost-microcontrollers-mcus-based-on-arm-cortex-m0-plus-cores:LPC81X_LPC83X?tab=Documentation_Tab\">\u30da\u30fc\u30b8<\/a>\u306e Application note &#8220;LPC800 low power modes and wake-up times&#8221; \u3068\u3044\u3046\u3068\u3053\u308d\u306b\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u5148\u307b\u3069\u306e\u30b3\u30fc\u30c9\u4e2d\u306e\u300110 msec \u9045\u5ef6\u306e\u79d8\u5bc6\u307e\u3067\u306f\u5206\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u5c11\u3057\u3067\u3082\u7686\u69d8\u306e\u5fa1\u53c2\u8003\u306b\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n<p>\u4eca\u65e5\u306f\u3053\u3053\u307e\u3067\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Evaluated &#8220;Deep power-down mode&#8221; of NXP LPC810M. \u4ee5\u524d\u3001LPC810M \u3067\u300cL \u30c1\u30ab\u300d\uff08LED \u30c1\u30ab\u30c1\u30ab\uff09\u3092\u3057\u3066\u307f\u307e\u3057\u305f\u304c\u3001\u4eca\u56de\u306f\u5b9a\u671f\u7684\u306b\u30b9\u30ea\u30fc\u30d7\u30e2\u30fc\u30c9\u306b\u5165\u308a\u6d88\u8cbb\u96fb\u529b\u3092\u6291\u3048\u308b\u5b9f\u9a13\u3092\u3057\u3066\u307f\u307e\u3057\u305f\u3002\u7279\u306b\u3001\u3082\u3063\u3068\u3082\u6d88\u8cbb\u96fb\u6d41\u306e\u5c0f\u3055\u3044 Deep power-down \u30e2\u30fc\u30c9\u3068\u3044\u3046\u3082\u306e\u3092\u8a55\u4fa1\u3057\u3066\u307f\u307e\u3057\u305f\u3002\u3046\u307e\u304f\u5b9f\u88c5\u3059\u308b\u3068\u3001\u30b9\u30ea\u30fc\u30d7\u671f\u9593\u4e2d\u306e\u6d88\u8cbb\u96fb\u6d41\u3092 1 uA\uff08\u30de\u30a4\u30af\u30ed\u30a2\u30f3\u30da\u30a2\uff09\u7a0b\u5ea6\u306b\u6291\u3048\u3089\u308c\u308b\u3088\u3046\u3067\u3059\u3002\uff08\u305f\u3060\u3057\u3001\u30e1\u30e2\u2026 <span class=\"read-more\"><a href=\"https:\/\/flogics.com\/wp\/2017\/07\/nxp-lpc810m-%e3%81%a7%e3%80%81deep-power-%e3%83%a2%e3%83%bc%e3%83%89%e3%82%92%e8%a9%a6%e3%81%97%e3%81%a6%e3%81%bf%e3%82%8b\/\">\u7d9a\u304d\u3092\u8aad\u3080 &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":1750,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[22,3,17],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/posts\/1745"}],"collection":[{"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/comments?post=1745"}],"version-history":[{"count":8,"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/posts\/1745\/revisions"}],"predecessor-version":[{"id":6840,"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/posts\/1745\/revisions\/6840"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/media\/1750"}],"wp:attachment":[{"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/media?parent=1745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/categories?post=1745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/flogics.com\/wp\/wp-json\/wp\/v2\/tags?post=1745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}