SH7261 Datasheet, PDF (690/1348 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 15 Realtime Clock (RTC)
Initial
Bit Bit Name Value
4
CIE
0
3
AIE
0
2, 1 —
All 0
0
AF
0
R/W Description
R/W Carry Interrupt Enable Flag
When the carry flag (CF) is set to 1, the CIE bit enables
interrupts.
0: A carry interrupt is not generated when the CF flag is
set to 1
1: A carry interrupt is generated when the CF flag is set
to 1
R/W Alarm Interrupt Enable Flag
When the alarm flag (AF) is set to 1, the AIE bit allows
interrupts.
0: An alarm interrupt is not generated when the AF flag
is set to 1
1: An alarm interrupt is generated when the AF flag is
set to 1
R
Reserved
These bits are always read as 0. The write value should
always be 0.
R/W Alarm Flag
The AF flag is set when the alarm time, which is set by
an alarm register (ENB bit in RSECAR, RMINAR,
RHRAR, RWKAR, RDAYAR, RMONAR, or RYRAR is
set to 1), and counter match.
0: Alarm register and counter not match
[Clearing condition]
• When 0 is written to AF.
1: Alarm register and counter match^*
[Setting condition]
• When alarm register (only a register with ENB bit
set to 1) and counter match
Note: * Writing 1 holds previous value.
Rev. 2.00 Sep. 07, 2007 Page 658 of 1312
REJ09B0320-0200