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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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4524 датащи(PDF) 59 Page - Renesas Technology Corp |
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4524 датащи(HTML) 59 Page - Renesas Technology Corp |
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59 / 310 page  FUNCTION BLOCK OPERATIONS 4524 Group HARDWARE Rev.2.00 Aug, 06 2004 REJ09B0107-0200Z 1-46 Fig. 31 Program example to start/stop watchdog timer Fig. 32 Program example to enter the mode when using the watchdog timer WRST ; WDF1 flag cleared NOP DI ; Interrupt disabled EPOF ; POF instruction enabled POF ↓ Oscillation stop When the watchdog timer is used, clear the WDF1 flag at a cycle of less than 65534 machine cycles with the WRST instruction. When the watchdog timer is not used, execute the DWDT instruc- tion and the WRST instruction continuously (refer to Figure 31). The watchdog timer is not stopped with only the DWDT instruction. The contents of WDF1 flag and timer WDT are initialized at the power down mode. When using the watchdog timer and the power down mode, initial- ize the WDF1 flag with the WRST instruction just before the system enters the power down state (refer to Figure 32). The watchdog timer function is valid after system is returned from the power down. When not using the watchdog timer function, stop the watchdog timer function with the DWDT instruction and the WRST instruction continuously every system is returned from the power down. WRST ; WDF1 flag cleared DI DWDT ; Watchdog timer function enabled/disabled WRST ; WEF and WDF1 flags cleared |
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