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HT68F20 Datasheet(PDF) 48 Page - Holtek Semiconductor Inc |
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HT68F20 Datasheet(HTML) 48 Page - Holtek Semiconductor Inc |
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48 / 210 page  HT68F20/HT68F30/HT68F40/HT68F50/HT68F60 Rev. 1.00 48 November 3, 2009 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. Note that where more than one package type exists the table will reflect the situation for the larger package type. · HT68F20 Register Register Reset (Power-on) RES or LVR Reset WDT Time-out (Normal Operation) WDT Time-out (IDLE) MP0 - xxx xxxx - xxx xxxx - xxx xxxx - uuu uuuu MP1 - xxx xxxx - xxx xxxx - xxx xxxx - uuu uuuu BP - - - - - - - 0 - - - - - - - 0 - - - - - - - 0 - - - - - - - u ACC xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu PCL 0000 0000 0000 0000 0000 0000 0000 0000 TBLP xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu TBLH -- xx xxxx -- uu uuuu -- uu uuuu -- uu uuuu TBHP - - - - - - xx - - - - - - uu - - - - - - uu - - - - - - uu STATUS -- 00 xxxx -- uu uuuu -- 1u uuuu -- 11 uuuu SMOD 0000 0011 0000 0011 0000 0011 uuuu uuuu LVDC -- 00 - 000 -- 00 - 000 -- 00 - 000 -- uu - uuu INTEG - - - - 0000 - - - - 0000 - - - - 0000 - - - - uuuu WDTC 0111 1010 0111 1010 0111 1010 uuuu uuuu TBC 0011 0111 0011 0111 0011 0111 uuuu uuuu INTC0 - 000 0000 - 000 0000 - 000 0000 - uuu uuuu INTC1 0000 0000 0000 0000 0000 0000 uuuu uuuu INTC2 0000 0000 0000 0000 0000 0000 uuuu uuuu MFI0 -- 00 -- 00 -- 00 -- 00 -- 00 -- 00 -- uu -- uu MFI1 -- 00 -- 00 -- 00 -- 00 -- 00 -- 00 -- uu -- uu MFI2 0000 0000 0000 0000 0000 0000 uuuu uuuu PAWU 0000 0000 0000 0000 0000 0000 uuuu uuuu PAPU 0000 0000 0000 0000 0000 0000 uuuu uuuu PA 1111 1111 1111 1111 1111 1111 uuuu uuuu PAC 1111 1111 1111 1111 1111 1111 uuuu uuuu PBPU -- 00 0000 -- 00 0000 -- 00 0000 -- uu uuuu PB -- 11 1111 -- 11 1111 -- 11 1111 -- uu uuuu PBC -- 11 1111 -- 11 1111 -- 11 1111 -- uu uuuu PCPU - - - - 0000 - - - - 0000 - - - - 0000 - - - - uuuu PC - - - - 1111 - - - - 1111 - - - - 1111 - - - - uuuu PCC - - - - 1111 - - - - 1111 - - - - 1111 - - - - uuuu CP0C 1000 0 -- 1 1000 0 -- 1 1000 0 -- 1 uuuu u -- u CP1C 1000 0 -- 1 1000 0 -- 1 1000 0 -- 1 uuuu u -- u SIMC0 1110 000 - 1110 000 - 1110 000 - uuuu uuu - |
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