SH7261 datasheet(686/1348 Pages) RENESAS

686 / 1348 page

Section 15 Realtime Clock (RTC)

Rev. 2.00 Sep. 07, 2007 Page 654 of 1312

REJ09B0320-0200

15.3.13

Date Alarm Register (RDAYAR)

RDAYAR is an alarm register corresponding to the BCD coded date counter RDAYCNT. When

the ENB bit is set to 1, a comparison with the RDAYCNT value is performed. From among

RSECAR/RMINAR/RHRAR/RWKAR/RDAYAR/RMONAR/RCR3, the counter and alarm

coincides, an alarm flag of RCR1 is set to 1.

The assignable range is from 01 through 31 + ENB bits (practically in BCD), otherwise operation

errors occur.

The ENB bit in RDAYAR is initialized by a power-on reset or in deep standby mode. The other

bits are not initialized by a power-on reset or manual reset, or in deep standby and software

standby modes.

R/W

ENB

R/W

Bit:

Initial value:

R/W:

—

10 days

——

R/W

—

R/W

——

—

1 day

Bit

Bit Name

Initial

Value

R/W

Description

ENB

R/W

When this bit is set to 1, a comparison with the

RDAYCNT value is performed.



Reserved

This bit is always read as 0. The write value should

always be 0.

5, 4

10 days

Undefined

R/W

Ten's position of dates setting value

3 to 0

1 day

Undefined

R/W

One's position of dates setting value

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