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HT82K74EE Datasheet(PDF) 28 Page - Holtek Semiconductor Inc |
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HT82K74EE Datasheet(HTML) 28 Page - Holtek Semiconductor Inc |
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28 / 56 page  HT82K74E/HT82K74EE Rev. 1.00 28 December 15, 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. Register Reset (Power-on) WDT time-out (Normal Operation) RES Reset (Normal Operation) RES Reset (HALT) WDT Time-out (HALT)* PCL 000H 000H 000H 000H 000H MP xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu ACC xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TBLP xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TBLH -xxx xxxx -uuu uuuu -uuu uuuu -uuu uuuu -uuu uuuu STATUS --00 xxxx --1u uuuu --00 uuuu --00 uuuu --11 uuuu INTC --0- -0-0 --0- -0-0 --0- -0-0 --0- -0-0 --u- -u-u TMRL xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx uuuu uuuu TMRH xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx uuuu uuuu TMRC 00-0 1--- 00-0 1--- 00-0 1--- 00-0 1--- uu-u u--- PA 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PAC 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PB 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PBC 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PC 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PCC 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PD 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PDC 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PE ---- 1111 ---- 1111 ---- 1111 ---- 1111 ---- uuuu PEC ---- 1111 ---- 1111 ---- 1111 ---- 1111 ---- uuuu WSR xxxx x--- xxxx x--- xxxx x--- xxxx x--- uuuu u--- CTLR 0000 0x00 0000 0x00 0000 0x00 0000 0x00 uuuu uxuu OSCC 0000 0000 0000 0000 0000 0000 0000 0000 uuu0 uuuu RFCTR 0000 0000 0000 0000 0000 0000 0000 0000 000u uuuu PTR 0000 0000 0000 0000 0000 0000 0000 0000 uuuu uuuu TBHP 0000 0000 0000 0uuu 0000 uuuu 0000 0uuu 0000 0uuu Note: ²*² means ²warm reset² ²-² not implemented ²u² means ²unchanged² ²x² means ²unknown² |
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