E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 609

• Manufacturer Part Number: E62655RUSB
• Description: EMULATOR BASE H8S/2655R W/USB
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of E62655RUSB

• Contents: E6000 Emulator Unit and 4 Logic Probes
• For Use With/related Products: H8S/2655R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

13.3.2
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 13.5. This function can be used to
generate interrupt requests at regular intervals.
13.3.3
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 13.6.
Legend:
WOVI: Interval timer interrupt request generation
H'FF
H'00
TCNT count
WT/IT = 0
TME = 1
Interval Timer Operation
Timing of Setting Overflow Flag (OVF)
Overflow
WOVI
Figure 13.5 Interval Timer Operation
Overflow
WOVI
Rev. 5.00 Sep 14, 2006 page 579 of 1060
Overflow
WOVI
Section 13 Watchdog Timer
Overflow
REJ09B0331-0500
WOVI
Time