Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 763 of 1823
Jul 31, 2019
RX23W Group 28. Realtime Clock (RTCe)
Figure 28.1 Block Diagram of RTC (n = 0, 1)
Table 28.2 Pin Configuration of RTC
Pin Name I/O Function
XCIN Input Connect a 32.768-kHz crystal to these pins.
XCOUT Output
RTCOUT Output This pin is used to output a 1-Hz/64-Hz waveform.
RTCIC0 Input Time capture event input pins
RTCIC1 Input
RMINCNT/
BCNT1
RHRCNT/
BCNT2
RDAYCNT
RMONCNT RYRCNT
Sub-clock
oscillator
XCIN
XCOUT
RWKCNT/
BCNT3
32.768 kHz
128 Hz
R64CNT
RSECCNT/
BCNT0
Internal peripheral bus
RTCOUT
1-Hz/64-Hz output
128-Hz generation
for XCIN
RADJ
Realtime clock (RTC)
Time counter
Prescaler
RCR2
Time capture
event input pins
RTCICn
RTCCRn
RMINAR/
BCNT1AR
RHRAR/
BCNT2AR
RWKAR/
BCNT3AR
RSECAR/
BCNT0AR
RSECCPn/
BCNT0CPn
RMINCPn/
BCNT1CPn
RHRCPn/
BCNT2CPn
RDAYCPn/
BCNT3CPn
RMONCPn
Time capture control unit
Alarm function
RCR1
ALM
PRD
CUP
Event signal output
Interrupt control
Bus interface
Alarm comparison
To each
function
RCR3
RDAYAR/
BCNT0AER
RMONAR/
BCNT1AER
RYRAR
BCNT2AER
RYRAREN/
BCNT3AER
R64CNT: 64-Hz counter
RSECCNT/BCNT0: Second counter/Binary counter 0
RMINCNT/BCNT1: Minute counter/Binary counter 1
RHRCNT/BCNT2: Hour counter/Binary counter 2
RWKCNT/BCNT3: Day-of-week counter/Binary counter 3
RDAYCNT: Date counter
RMONCNT: Month counter
RYRCNT: Year counter
RCR1: RTC control register 1
RCR2: RTC control register 2
RCR3: RTC control register 3
RADJ: Time error adjustment register
RSECAR/BCNT0AR: Second alarm register/Binary counter 0 alarm register
RMINAR/BCNT1AR: Minute alarm register/Binary counter 1 alarm register
RHRAR/BCNT2AR: Hour alarm register/Binary counter 2 alarm register
RWKAR/BCNT3AR: Day-of-week alarm register/Binary counter 3 alarm register
RDAYAR/BCNT0AER: Date alarm register/Binary counter 0 alarm enable register
RMONAR/BCNT1AER: Month alarm register/Binary counter 1 alarm enable register
RYRAR/BCNT2AER: Year alarm register/Binary counter 2 alarm enable register
RYRAREN/BCNT3AER: Year alarm enable register/Binary counter 3 alarm enable register
RTCCRn: Time capture control register n
RSECCPn/BCNT0CPn: Second capture register n/BCNT0 capture register n
RMINCPn/BCNT1CPn: Minute capture register n/BCNT1 capture register n
RHRCPn/BCNT2CPn: Hour capture register n/BCNT2 capture register n
RDAYCPn/BCNT3CPn: Date capture register n/BCNT3 capture register n
RMONCPn: Month capture register n

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English