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Section 14 Realtime Clock
Page 688 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
14.3.11 Hour Alarm Register (RHRAR)
RHRAR is an alarm register corresponding to the BCD-coded hour counter RHRCNT. When the
ENB bit is set to 1, a comparison with the RHRCNT value is performed. From among
RSECAR/RMINAR/RHRAR/RWKAR/RDAYAR/RMONAR/RCR3, the counter and alarm
register comparison is performed only on those with ENB bits set to 1, and if each of those
coincides, an alarm flag of RCR1 is set to 1.
The assignable range is from 00 through 23 ENB bits (practically in BCD), otherwise operation
errors occur.
UndefinedUndefined UndefinedUndefined UndefinedUndefinedUndefined
01234567
R/W R/W R/W R/W R/W R/WR/W
0
R
BIt:
Initial value:
R/W:
ENB - 10 hours 1 hour
Bit Bit Name
Initial
Value R/W Description
7 ENB Undefined R/W When this bit is set to 1, a comparison with the
RHRCNT value is performed.
6 0 R Reserved
This bit is always read as 0. The write value should
always be 0.
5, 4 10 hours Undefined R/W Ten's position of hours setting value
3 to 0 1 hour Undefined R/W One's position of hours setting value