1024
SCKCR—System Clock Control Register
H'FDE6
System
7
PSTOP
0
R/W
6
—
0
—
5
—
0
—
4
—
0
—
3
STCS
0
R/W
0
SCK0
0
R/W
2
SCK2
0
R/W
1
SCK1
0
R/W
Bit
Initial value
R/W
:
:
:
ø clock output disable
PSTOP
High-speed mode,
Sleep mode
Software standby mode
Hardware standby
Medium-speed mode
Sub-Sleep mode
Watch mode direct transition
mode
Sub-active mode
0
ø output
ø output
High level (fixed)
High impedance
1
High level (fixed)
High level (fixed)
High level (fixed)
High impedance
Frequency multiplier switching mode select
0
Specified multiplier valid after transferring to software standby mode,
watch mode, and sub-active mode.
1
Specified multiplier valid immediately after setting value in STC bit.
System clock select 2 to 0
SCK2
SCK1
SCK0
0
0
0
1
1
0
1
1
0
0
1
1
—
—
Bus master set to high-speed mode.
Medium-speed clock: ø/2
Medium-speed clock: ø//4
Medium-speed clock: ø8
Medium-speed clock: ø/16
Medium-speed clock: ø/32