HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 635
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417320.pdf
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17.3.13 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
register comparison is performed only on those with ENB bits set to 1, and if each of those
coincide, an alarm flag of RCR1 is set to 1.
The range of date alarm which can be set is 01 to 31 (decimal). Errant operation will result if any
other value is set. The RDAYCNT range that can be set changes with some months and in leap
years. Please confirm the correct setting.
The ENB bit in RDAYAR is initialized by a power-on reset. The remaining RDAYAR fields are
not initialized by a power-on reset or manual reset, or in standby mode.
Bit
7
6
5, 4
3 to 0
Bit Name
ENB
Initial Value
0
0
Undefined
Undefined
R/W
R/W
R
R/W
R/W
Description
When this bit is set to 1, a comparison with the
Reserved
This bit is always read as 0. The write value
should always be 0.
Ten’s position of dates setting value
One’s position of dates setting value
RDAYCNT value is performed.
Rev. 3.00 Jan. 18, 2008 Page 573 of 1458
Section 17 Realtime Clock (RTC)
REJ09B0033-0300
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