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SN8P2613 Datasheet(PDF) 72 Page - SONiX Technology Company |
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SN8P2613 Datasheet(HTML) 72 Page - SONiX Technology Company |
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72 / 102 page  SN8P2610 Series 8-Bit Micro-Controller SONiX TECHNOLOGY CO., LTD Page 72 Version 1.3 Watchdog timer application note is as following. Before clearing watchdog timer, check I/O status and check RAM contents can improve system error. Don’t clear watchdog timer in interrupt vector and interrupt service routine. That can improve main routine fail. Clearing watchdog timer program is only at one part of the program. This way is the best structure to enhance the watchdog timer function. Example: An operation of watchdog timer is as following. To clear the watchdog timer counter in the top of the main routine of the program. Main: … ; Check I/O. … ; Check RAM Err: JMP $ ; I/O or RAM error. Program jump here and don’t ; clear watchdog. Wait watchdog timer overflow to reset IC. Correct: ; I/O and RAM are correct. Clear watchdog timer and ; execute program. B0BSET FWDRST ; Only one clearing watchdog timer of whole program. … CALL SUB1 CALL SUB2 … … … JMP MAIN |
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