HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 623

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

13.3.4
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 chip. Figure 13.7 shows the timing in this case.
Note: * The WDTOVF pin function cannot be used in the F-ZTAT versions.
φ
TCNT
Overflow signal
(internal signal)
WOVF
WDTOVF signal*
Internal reset
signal
Note: * The WDTOVF pin function cannot be used in the F-ZTAT versions.
Timing of Watchdog Timer Overflow Flag (WOVF) Setting
Figure 13.7 Timing of WOVF Setting
H'FF
Rev.6.00 Sep. 27, 2007 Page 593 of 1268
132 states
H'00
518 states
Section 13 Watchdog Timer
REJ09B0220-0600