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HT95R22 Datasheet(PDF) 27 Page - Holtek Semiconductor Inc |
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HT95R22 Datasheet(HTML) 27 Page - Holtek Semiconductor Inc |
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27 / 52 page  HT95R22 Rev. 1.00 27 January 6, 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) RES Reset (Normal/Green) RES Reset (Sleep/Idle) WDT Time-out (Normal/Green) WDT Time-out (Sleep/Idle) IAR0 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu MP0 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu IAR1 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu MP1 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu BP 0000 0000 0000 0000 0000 0000 0000 0000 uuuu uuuu ACC xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu PCL 0000H 0000H 0000H 0000H 0000H TBLP xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TBLH xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu WDTS 0000 0111 0000 0111 0000 0111 0000 0111 uuuu uuuu STATUS - - 00 xxxx - - uu uuuu - - 01 uuuu - - 1u uuuu - - 11 uuuu INTC0 - 000 0000 - 000 0000 - 000 0000 - 000 0000 - uuu uuuu TMR0H xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TMR0L xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TMR0C 00 - 01 --- 00 - 01 --- 00 - 01 --- 00 - 01 --- uu - uu --- TMR1H xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TMR1L xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TMR1C 00 - 01 --- 00 - 01 --- 00 - 01 --- 00 - 01 --- uu - uu --- 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 -- 11 1111 -- 11 1111 -- 11 1111 -- 11 uuuu -- uu PD 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PDC 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu INTC1 - 00 -- 00 -- 00 -- 00 -- 00 -- 00 -- 00 -- 00 -- uu -- uu - DTMFC ---- 0 -- 1 ---- 0 -- 1 ---- 0 -- 1 ---- 0 -- 1 ---- - u - u DTMFD 0000 0000 0000 0000 0000 0000 0000 0000 uuuu uuuu RTCC 0 - 0 - ---- u - u - ---- u - u - ---- u - u - ---- u - u - ---- MODE 000 - ---- 00u - ---- 00u - ---- 00u - ---- 00u - ---- MFIC - 000 - 000 - 000 - 000 - 000 - 000 - 000 - 000 - uuu - uuu Note: ²u² stands for unchanged ²x² stands for unknown ²-² stands for unimplemented |
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