H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 575

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

12.3.2
To use the WDT as an interval timer, clear the WT/IT bit in TCSR to 0 and set the TME bit to 1.
An interval timer interrupt (WOVI) is generated each time TCNT overflows, provided that the
WDT is operating as an interval timer, as shown in figure 12.5. This function can be used to
generate interrupt requests at regular intervals.
12.3.3
The OVF flag is set to 1 if TCNT overflows during interval timer operation. At the same time, an
interval timer interrupt (WOVI) is requested. This timing is shown in figure 12.6.
Legend:
WOVI: Interval timer interrupt request generation
H'FF
H'00
TCNT count
Interval Timer Operation
Timing of Setting Overflow Flag (OVF)
WT/IT = 0
TME = 1
Overflow
Figure 12.5 Interval Timer Operation
WOVI
Overflow
WOVI
Rev. 3.00 Sep 15, 2006 page 541 of 988
Overflow
Section 12 Watchdog Timer (WDT)
WOVI
Overflow
WOVI
REJ09B0330-0300
Time