H8SSLASH2218 datasheet(403/750 Pages) RENESAS

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Section 11 Realtime Clock (RTC)

Rev.6.00 Jun. 03, 2008 Page 355 of 698

REJ09B0074-0600

11.3.6

RTC Control Register 2 (RTCCR2)

RTCCR2 controls RTC periodic interrupts of weeks, days, hours, minutes, and seconds. This

STBY input or the RST bit in RTCCR1, but not initialized by a

RES input. Enabling interrupts of weeks, days, hours, minutes, and seconds sets the IRRTA flag to

1 in the interrupt flag register 1 (IRR1) when an interrupt occurs. It also controls an overflow

interrupt of a free running counter when RTC operates as a free running counter.

Bit

Bit Name

Initial Value* R/W

Description

7, 6 —

All 0

—

Reserved

These bits are always read as 0.

FOIE

—

R/W

Free Running Counter Overflow Interrupt Enable

0: Disables an overflow interrupt

1: Enables an overflow interrupt

WKIE

—

R/W

Week Periodic Interrupt Enable

0: Disables a week periodic interrupt

1: Enables a week periodic interrupt

DYIE

—

R/W

Day Periodic Interrupt Enable

0: Disables a day periodic interrupt

1: Enables a day periodic interrupt

HRIE

—

R/W

Hour Periodic Interrupt Enable

0: Disables an hour periodic interrupt

1: Enables an hour periodic interrupt

MNIE

—

R/W

Minute Periodic Interrupt Enable

0: Disables a minute periodic interrupt

1: Enables a minute periodic interrupt

SEIE

—

R/W

Second Periodic Interrupt Enable

0: Disables a second periodic interrupt

1: Enables a second periodic interrupt

Note: * Initial value after

RES.

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