Renesas R5S72622 Manual De Usuario
Section 14 Realtime Clock
Page 698 of 2108
R01UH0134EJ0400 Rev. 4.00
Sep
24,
2014
SH7262 Group, SH7264 Group
14.3.19
Control Register 5 (RCR5)
When the RCKSEL bit is set to 0, the RTC_X1 clock pulses are counted; and when the RCKSEL
bit is set to 1, the EXTAL clock pulses are counted to implement the clock function.
bit is set to 1, the EXTAL clock pulses are counted to implement the clock function.
7
6
5
4
3
2
1
0
Bit:
Initial value:
R/W:
0
0
0
0
0
0
0
Undefined
R
R
R
R
R
R
R
R/W
-
-
-
-
-
-
-
RCKSEL
Bit Bit
Name
Initial
Value R/W
Value R/W
Description
7 to 1
All
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
0
RCKSEL
Undefined R/W
Operation clock select
Operation clock can be selected from either RTC_X1 or
EXTAL.
EXTAL.
The setting of this bit should not be switched during
operation.
operation.
0: Selects RTC_X1.
1: Selects EXTAL.