HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 634
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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Section 17 Realtime Clock (RTC)
17.3.12 Day of Week Alarm Register (RWKAR)
RWKAR is an alarm register corresponding to the BCD coded day of week counter RWKCNT.
When the ENB bit is set to 1, a comparison with the RWKCNT 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 day of the week alarm which can be set is 0 to 6 (decimal). Errant operation will
result if any other value is set.
The ENB bit in RWKAR is initialized by a power-on reset. The remaining RWKAR fields are not
initialized by a power-on reset or manual reset, or in standby mode.
Rev. 3.00 Jan. 18, 2008 Page 572 of 1458
REJ09B0033-0300
Bit
7
6 to 3
2 to 0
Code
Day
0
Sunday
Bit Name
ENB
1
Monday
Initial Value
0
0
Undefined
2
Tuesday
R/W
R/W
R
R/W
3
Wednesday Thursday
Description
When this bit is set to 1, a comparison with the
Reserved
These bits are always read as 0. The write value
should always be 0.
Day of week setting value
RWKCNT value is performed.
4
5
Friday
6
Saturday
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