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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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7733 데이터시트(PDF) 448 Page - Renesas Technology Corp |
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7733 데이터시트(HTML) 448 Page - Renesas Technology Corp |
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448 / 940 page  APPLICATIONS 7733 Group User’s Manual 17–41 17.3 Watchdog timer A program runaway detection example with using the watchdog timer is described below. 17.3.1 Program runaway detection example In this example, when the watchdog timer detect a program runaway, the microcomputer is reset. (1) Specifications The main clock is the system clock and f(XIN) = 16 MHz. When an interval of 4.09 ms has passed after value “FFF16” is set, the watchdog timer issues an interrupt request. (When writing to address 6016 is not performed because of a program runa- way.) When a watchdog timer interrupt request occurs, the microcomputer is reset. (“Software reset” is applied.) (2) Initial setting for related register 17.3 Watchdog timer Fig. 17.3.1 Initial setting for related register Watchdog timer count source: clock f 32 (In the case where f(XIN) = 16 MHz, a watchdog timer interrupt request occurs when an interval of 4.09 ms has passed after value “FFF 16” is set.) b7 b0 @ Watchdog timer frequency selection flag (address 61 16) 1 |
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