Rtc Control Register (Rtccr) - Renesas SH7727 General Information Manual

R0P7727TH003TRKE General Information Manual

6.3.1 RTC Control Register (RTCCR)

Address: 0x000 Initial value: 0x00
D7 D6
0 0
R R
(1) START
START bit
0
1
Don't write to any counter while the START bit is set to "0." Rewrite each counter after setting the
START bit to "1."
(2) ARI
ARI bit
0
1
(3) 1secI
1secI bit
0
1
(4) 0.5secI
0.5secI bit
0
1
(5) SECCAF
SECCAF bit
0
1
D5 D4
CNTS SECCAF
R/W R/W
RTC start (Initial value)
RTC stop
No alarm interrupt is generated (Initial value)
An alarm interrupt is generated
No interrupt is generated at intervals of 1 second.
(Initial value)
An interrupt is generated at intervals of 1 second.
No interrupt is generated at intervals of 0.5 second.
(Initial value)
An interrupt is generated at intervals of 0.5 second.
No carry has been generated in the second counter (SECCNT).
(Initial value)
A carry has been generated in the second counter (SECCNT).
[Zero-clear condition]
The SECCAF bit is set to "1.''
D3 D2
0.5secI 1secI
R/W R/W
Setting
CAUTION
Setting
Setting
Setting
Setting
50
Power Supply Controller
D1 D0
ARI START
R/W R/W