HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 422

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

11.3.4
The WOVF flag is set to 1 if TCNT overflows during watchdog timer operation. At the same time,
the WDTOVF signal* goes low. If TCNT overflows while the RSTE bit in RSTCSR is set to 1, an
internal reset signal is generated for the entire H8S/2345 Series chip. Figure 11.7 shows the timing
in this case.
Note: * The WDTOVF pin function is not supported by the F-ZTAT version.
ø
TCNT
Overflow signal
(internal signal)
WOVF
WDTOVF signal *
Internal reset
signal
Note: * The WDTOVF pin function is not supported by the F-ZTAT version.
Overflow signal
(internal signal)
ø
OVF
TCNT
Timing of Setting of Watchdog Timer Overflow Flag (WOVF)
Figure 11.7 Timing of Setting of WOVF
Figure 11.6 Timing of Setting of OVF
H'FF
H'FF
132 states
H'00
518 states
H'00
407