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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8/3003 数据表(PDF) 430 Page - Renesas Technology Corp |
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H8/3003 数据表(HTML) 430 Page - Renesas Technology Corp |
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430 / 715 page  Bit 7—Overflow Flag (OVF): This status flag indicates that the timer counter has overflowed from H'FF to H'00. Bit 7 OVF Description 0 [Clearing condition] Cleared by reading OVF when OVF = 1, then writing 0 in OVF (Initial value) 1 [Setting condition] Set when TCNT changes from H'FF to H'00 Bit 6—Timer Mode Select (WT/ IT): Selects whether to use the WDT as a watchdog timer or interval timer. If used as an interval timer, the WDT generates an interval timer interrupt request when TCNT overflows. If used as a watchdog timer, the WDT generates a reset signal when TCNT overflows. Bit 6 WT/ IT Description 0 Interval timer: requests interval timer interrupts (Initial value) 1 Watchdog timer: generates a reset signal Bit 5—Timer Enable (TME): Selects whether TCNT runs or is halted. Bit 5 TME Description 0 TCNT is initialized to H'00 and halted (Initial value) 1 TCNT is counting Bits 4 and 3—Reserved: Read-only bits, always read as 1. 412 |
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