Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 781 of 1823
Jul 31, 2019
RX23W Group 28. Realtime Clock (RTCe)
28.2.18 RTC Control Register 2 (RCR2)
Note 1. R64CNT, RSECAR/BCNT0AR, RMINAR/BCNT1AR, RHRAR/BCNT2AR, RWKAR/BCNT3AR, RDAYAR/BCNT0AER,
RMONAR/BCNT1AER, RYRAR/BCNT2AER, RYRAREN/BCNT3AER, RADJ, RTCCRn, RSECCPn/BCNT0CPn, RMINCPn/
BCNT1CPn, RHRCPn/BCNT2CPn, RDAYCPn/BCNT3CPn, RMONCPn, RCR2.ADJ30, RCR2.AADJE, RCR2.AADJP
Note 2. This bit is reserved in binary counter mode. The write value should be 0.
Note 3. After writing to this bit, confirm that its value has actually changed before proceeding with further processing.
Refer to section 28.6.5, Notes When Writing to and Reading from Registers for notes on accessing registers.
The RCR2 register is related to hours mode, automatic adjustment function, enabling the RTCOUT output, 30-second
adjustment, RTC software reset, and controlling count operation.
START Bit (Start)
This bit stops or restarts the prescaler or counter (clock) operation.
The START bit is updated in synchronization with the count source. When the START bit is modified, check that the bit
is updated before proceeding to the next processing.
Address(es): RTC.RCR2 0008 C424h
b7 b6 b5 b4 b3 b2 b1 b0
CNTM
D
HR24 AADJP AADJE RTCOE ADJ30 RESET START
Value after reset:
xxxx000x
x: Undefined
Bit Symbol Bit Name Description R/W
b0 START Start 0: Prescaler and counter are stopped.
1: Prescaler and counter operate normally.
R/W
b1 RESET RTC Software Reset
 In writing
0: Writing is invalid.
1: The prescaler and the target registers for RTC software
reset*
1
are initialized
 In reading
0: In normal time operation, or an RTC software reset has
completed.
1: During an RTC software reset
R/W
b2 ADJ30 30-Second Adjustment*
2
 In writing
0: Writing is invalid.
1: 30-second adjustment is executed.
 In reading
0: In normal time operation, or 30-second adjustment has
completed.
1: During 30-second adjustment
R/W
b3 RTCOE RTCOUT Output Enable 0: RTCOUT output disabled.
1: RTCOUT output enabled.
R/W
b4 AADJE Automatic Adjustment Enable
*
3
0: Automatic adjustment is disabled.
1: Automatic adjustment is enabled.
R/W
b5 AADJP Automatic Adjustment Period
Select*
3
0: The RADJ.ADJ[5:0] setting value is adjusted from the count
value of the prescaler every minute (every 32 seconds in
binary counter mode).
1: The RADJ.ADJ[5:0] setting value is adjusted from the count
value of the prescaler every 10 seconds (every 8 seconds
in binary counter mode).
R/W
b6 HR24 Hours Mode*
2,
*
3
0: The RTC operates in 12-hour mode.
1: The RTC operates in 24-hour mode.
R/W
b7 CNTMD Count Mode Select 0: The calendar count mode.
1: The binary count mode.
R/W

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English