DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 415
DF2211NP24V
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
Datasheet
1.DF2211NP24V.pdf
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11.6
Table 11.3 shows the operating state in each mode when the RTC is set for clock operation and
free running timer operation. The clock operation is performed continuously even in low power
mode. Therefore, when the clock operation is unnecessary, cancel it by EXMDLSTP.
Operating State in Each Mode
Figure 11.5 Initializing Procedure in Using RTC Interrupt
Figure 11.6 Example of RTC Interrupt Handling Routine
Write 0 to bit 5 in ISR register
Set IRQ5SCB = 0 and
IRQ5SCA = 1 in
ISCRH register
Write 0 to bit 5 in ISR register
Write 1 to bit 5 in IER
RUN in RTCCR1 = 1
Read ISR register
Set RTC register
Read ISR register
Interrupt handling
RTE
Set the falling edge of IRQ5
Clear the IRQ5F flag
IRQ5 is enabled
Rev.7.00 Dec. 24, 2008 Page 361 of 698
Clear the IRQ5F flag
REJ09B0074-0700
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