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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT48R005 датащи(PDF) 26 Page - Holtek Semiconductor Inc |
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HT48R005 датащи(HTML) 26 Page - Holtek Semiconductor Inc |
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26 / 62 page  HT48R005/HT46R005 Rev. 1.00 26 November 29, 2011 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. HT48R005 Register Power-on Reset RES or LVR Reset WDT Time-out (Normal Operation) WDT Time-out (HALT Mode) PCL 0000 0000 0000 0000 0000 0000 0000 0000 MP0 1xxx xxxx 1uuu uuuu 1uuu uuuu 1uuu uuuu MP1 1xxx xxxx 1uuu uuuu 1uuu uuuu 1uuu uuuu ACC xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu TBLP xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu TBLH -- xx xxxx -- uu uuuu -- uu uuuu -- uu uuuu WDTS ---- - 111 ---- - 111 ---- - 111 ---- - uuu STATUS -- 00 xxxx -- uu uuuu -- 1u uuuu -- 11 uuuu INTC0 -- 00 - 000 -- 00 - 000 -- 00 - 000 -- uu - uuu TMR0 xxxx xxxx xxxx xxxx xxxx xxxx uuuu uuuu TMR0C 00 - 0 1000 00 - 0 1000 00 - 0 1000 uu - u uuuu PA 111 -- 111 111 -- 111 111 -- 111 uuu -- uuu PAC 111 -- 111 111 -- 111 111 -- 111 uuu -- uuu PAWK 000 -- 000 000 -- 000 000 -- 000 uuu -- uuu PAPU - 00 -- 000 - 00 -- 000 - 00 -- 000 - uu -- uuu CTRL0 ---- 00 -- ---- 00 -- ---- 00 -- ---- uu -- CTRL1 10 -- 1010 10 -- 1010 10 -- 1010 uu -- uuuu Note: ²-² not implemented ²u² means ²unchanged² ²x² means ²unknown² |
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