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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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HT48R02B bảng dữ liệu(PDF) 27 Page - Holtek Semiconductor Inc |
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HT48R02B bảng dữ liệu(HTML) 27 Page - Holtek Semiconductor Inc |
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27 / 71 page  HT46R01B/02B/01N/02N HT48R01B/02B/01N/02N Rev.1.00 27 December 15, 2009 The following table indicates the way in which the various components of the microcontroller are affected after a power-on reset occurs. Item Condition After RESET Program Counter Reset to zero Interrupts All interrupts will be disabled WDT Clear after reset, WDT begins counting Timer/Event Counter Timer Counter will be turned off Prescaler The Timer Counter Prescaler will be cleared Input/Output Ports I/O ports will be setup as inputs Stack Pointer Stack Pointer will point to the top of the stack The different kinds of resets all affect the internal registers of the microcontroller in different ways. To ensure reliable continuation of normal program execution after a reset occurs, it is important to know what condition the microcontroller is in after a particular reset occurs. The following table describes how each type of reset affects each of the microcontroller internal registers. HT46R01B/HT46R02B/HT46R01N/HT46R02N Register Power-on Reset RES or LVR Reset WDT Time-out (Normal Operation) WDT Time-out (Sleep) PCL 0000 0000 0000 0000 0000 0000 0000 0000 MP0 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu MP1 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu ACC xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu TBLP xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu TBLH - xxx xxxx - uuu uuuu - uuu uuuu - uuu uuuu WDTS ---- - 111 ---- - 111 ---- - 111 ---- - uuu STATUS -- 00 xxxx -- uu uuuu -- 1u uuuu -- 11 uuuu INTC0 - 000 0000 - 000 0000 - 000 0000 - uuu uuuu INTC1 -- 00 -- 00 -- 00 -- 00 -- 00 -- 00 -- uu -- uu TMR0 xxxx xxxx xxxx xxxx xxxx xxxx uuuu uuuu TMR0C 0000 1000 0000 1000 0000 1000 uuuu uuuu TMR1 xxxx xxxx xxxx xxxx xxxx xxxx uuuu uuuu TMR1C 0000 1 --- 0000 1 --- 0000 1 --- uuuu u --- PA 1111 1111 1111 1111 1111 1111 uuuu uuuu PAC 1111 1111 1111 1111 1111 1111 uuuu uuuu PAWK 0000 0000 0000 0000 0000 0000 uuuu uuuu PAPU - 000 0000 - 000 0000 - 000 0000 - uuu uuuu PB ---- -- 11 ---- -- 11 ---- -- 11 ---- -- uu PBC ---- -- 11 ---- -- 11 ---- -- 11 ---- -- uu PBPU ---- -- 00 ---- -- 00 ---- -- 00 ---- -- uu CTRL0 - 00 - 0000 - 00 - 0000 - 00 - 0000 - uu - uuuu CTRL1 1000 1010 1000 1010 1000 1010 uuuu uuuu PWM0 xxxx xxxx xxxx xxxx xxxx xxxx uuuu uuuu |
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