h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 460

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 12 Watchdog Timer
12.3.4
In the WDT0, the WOVF flag is set to 1 if TCNT overflows during watchdog timer operation. If
TCNT overflows while the RSTE bit in RSTCSR is set to 1, an internal reset signal is generated
for the entire H8S/2646 Group chip. Figure 12.7 shows the timing in this case.
Rev. 5.00 Sep 22, 2005 page 434 of 1136
REJ09B0257-0500
TCNT
Overflow signal
(internal signal)
WOVF
Internal reset
signal
Timing of Setting of Watchdog Timer Overflow Flag (WOVF)
Figure 12.7 Timing of Setting of WOVF
H'FF
515/516 states (WDT1)
H'00
518 states (WDT0)