R5S72611 RENESAS [Renesas Technology Corp], R5S72611 Datasheet - Page 689
R5S72611
Manufacturer Part Number
R5S72611
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.R5S72611.pdf
(1348 pages)
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15.3.16 RTC Control Register 1 (RCR1)
RCR1 is a register that affects carry flags and alarm flags. It also selects whether to generate
interrupts for each flag.
RCR1 is initialized to H'00 by a power-on reset, a manual reset, or in deep standby mode. The CF
flag is retained undefined until the division circuit is reset (the RESET and ADJ bits in RCR2 are
set to 1). When using the CF flag, make sure to reset the divider circuit beforehand. This register is
not initialized in software standby mode.
Bit
7
6, 5
Bit Name
CF
—
Initial value:
Initial
Value
Undefined R/W
All 0
R/W:
Bit:
R/W
CF
—
7
R/W
R
—
R
6
0
Description
Carry Flag
Status flag that indicates that a carry has occurred. CF
is set to 1 when a count-up to 64-Hz occurs at the
second counter carry or 64-Hz counter read. A count
register value read at this time cannot be guaranteed;
another read is required.
0: No carry of 64-Hz counter by second counter or 64-
[Clearing condition]
•
1: Carry of 64-Hz counter by second counter or 64 Hz
[Setting condition]
•
Reserved
These bits are always read as 0. The write value should
always be 0.
—
R
Hz counter
counter
5
0
When 0 is written to CF
When the second counter or 64-Hz counter is read
during a carry occurrence by the 64-Hz counter, or 1
is written to CF.
R/W
CIE
4
0
R/W
AIE
3
0
Rev. 2.00 Sep. 07, 2007 Page 657 of 1312
—
R
2
0
—
R
1
0
Section 15 Realtime Clock (RTC)
R/W
AF
0
0
REJ09B0320-0200
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