Input/Output Pin; Register Descriptions - Renesas RZ/A Series User Manual

RZ/A1L Group, RZ/A1LU Group, RZ/A1LC Group
13.2

Input/Output Pin

Table 13.1 shows the pin configuration.
Table 13.1 Pin Configuration
Pin Name
Realtime clock crystal
resonator pin/external clock
Internal clock crystal
resonator/external clock
13.3

Register Descriptions

Table 13.2 shows the register configuration.
Table 13.2 Register Configuration
Register Name
64-Hz counter
Second counter
Minute counter
Hour counter
Day of week counter
Day counter
Month counter
Year counter
Second alarm register
Minute alarm register
Hour alarm register
Day of week alarm register
Day alarm register
Month alarm register
Year alarm register
Control register 1
Control register 2
Control register 3
Control register 5
Frequency register
R01UH0437EJ0600 Rev.6.00
Jan 29, 2021
Symbol I/O
RTC_X1 Input
RTC_X2 Output
EXTAL Input
XTAL Output
Abbreviation
R64CNT
RSECCNT
RMINCNT
RHRCNT
RWKCNT
RDAYCNT
RMONCNT
RYRCNT
RSECAR
RMINAR
RHRAR
RWKAR
RDAYAR
RMONAR
RYRAR
RCR1
RCR2
RCR3
RCR5
RFRH
RFRL
Description
Connects a 32.768-kHz crystal resonator for this module.
External clock can be input to the RTC_X1 pin.
Connects crystal resonator used for internal operation.
For details, see section 6, Clock Pulse Generator.
R/W Initial Value
R H'xx
R/W H'xx
R/W H'xx
R/W H'xx
R/W H'0x
R/W H'xx
R/W H'xx
R/W H'xxxx
R/W H'xx
R/W H'xx
R/W H'xx
R/W H'xx
R/W H'xx
R/W H'xx
R/W H'xxxx
R/W H'xx
R/W H'01
R/W H'x0
R/W H'0x
R/W H'xxxx
R/W H'xxxx
13. Realtime Clock
Access
Address Size
H'FCFF1000 8
H'FCFF1002 8
H'FCFF1004 8
H'FCFF1006 8
H'FCFF1008 8
H'FCFF100A 8
H'FCFF100C 8
H'FCFF100E 16
H'FCFF1010 8
H'FCFF1012 8
H'FCFF1014 8
H'FCFF1016 8
H'FCFF1018 8
H'FCFF101A 8
H'FCFF1020 16
H'FCFF101C 8
H'FCFF101E 8
H'FCFF1024 8
H'FCFF1026 8
H'FCFF102A 16
H'FCFF102C 16
13-3