r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 801
r8a77850anbg
Manufacturer Part Number
r8a77850anbg
Description
Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R8A77850ANBG.pdf
(1692 pages)
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16.4.2
1. Set the WDTCNT overflow time in WDTST.
2. Set the WT/IT bit in WDTCSR to 1, and select the type of reset with the RSTS bit.
3. When the TME bit in WDTCSR is set to 1, the WDT counter starts.
4. In watchdog timer mode, clear the WDTCNT or WDTBCNT periodically so that WDTCNT
5. When the WDTCNT overflows, the WDT sets the WOVF flag in WDTCSR to 1, and
16.4.3
In interval timer mode, the WDT generates an interval timer interrupt each time the counter
overflows. This allows interrupt generation at regular intervals.
1. Set the WDTCNT overflow time in WDTST.
2. Clear the WT/IT bit in WDTCSR to 0.
3. When the TME bit in WDTCSR is set to 1, the WDT counter starts.
4. When the WDTCNT overflows, the WDT sets the IOVF flag in WDTCSR to 1, generating an
does not overflow. See section 16.4.5, Clearing WDT Counters, for how to clear the WDT
counter.
generates a reset of the type specified by the RSTS bit. After the reset state is exited,
WDTCNT and WDTBCNT start counting again.
interval timer interrupt (ITI) request. WDTCNT and WDTBCNT continue counting.
Using Watchdog Timer Mode
Using Interval Timer Mode
Rev.1.00 Jan. 10, 2008 Page 771 of 1658
16. Watchdog Timer and Reset (WDT)
REJ09B0261-0100
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