M16C65 Datasheet, PDF (462/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
20. Real-Time Clock
20.4 Interrupts
Real-time clock generates the following two types of interrupts.
• Periodic interrupts triggered every second, minute, hour, day, and week
• Compare value match interrupt
Refer to Table 20.4 Periodic Interrupt Sources for details of periodic interrupt sources, each mode’s
specification and operating example for the interrupt request generating timing, and 14.7 “Interrupt
Control” for details of interrupt control. Table 20.5 lists Real-Time Clock Interrupt-Associated Registers.
Table 20.5 Real-Time Clock Interrupt-Associated Registers
Address
006Eh
006Fh
0205h
Register Name
Register Symbol
After Reset
Real-Time Clock Period Interrupt Control Register RTCTIC
XXXX X000b
Real-Time Clock Compare Match Interrupt
RTCCIC
XXXX X000b
Control Register
Interrupt Source Select Register 3
IFSR3A
00h
Real-time clock shares the interrupt vectors and interrupt control registers with other peripheral functions.
To use period interrupts, set the IFSR35 bit in the IFSR3A register to 1 (real-time clock cycle), and to use
compare interrupts, set the IFSR36 bit in the IFSR3A register to 1 (real-time clock compare).
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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