DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 399

• Manufacturer Part Number: DF2211NP24V
• Description: H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
• Manufacturer: Renesas Technology / Hitachi Semiconductor

10.3.4
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 10.5.
10.4
During interval timer mode operation, an overflow generates an interval timer interrupt (WOVI).
The interval timer interrupt is requested whenever the OVF flag is set to 1 in TCSR. OVF must be
cleared to 0 in the interrupt handling routine.
Table 10.1 WDT Interrupt Source
Name
WOVI
Overflow signal
(internal signal)
φ
OVF
TCNT
Timing of Setting of Overflow Flag (OVF)
Interrupts
Interrupt Source
TCNT overflow
Figure 10.5 Timing of OVF Setting
H'FF
Interrupt Flag
WOVF
Rev.7.00 Dec. 24, 2008 Page 345 of 698
H'00
REJ09B0074-0700