HD6432633 Datasheet, PDF (1273/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

SCKCR—System Clock Control Register
Bit
:
7
6
5
4
PSTOP —
—
—
Initial value :
0
0
0
0
R/W
: R/W
—
—
—
H'FDE6
System
3
STCS
0
R/W
2
SCK2
0
R/W
1
SCK1
0
R/W
0
SCK0
0
R/W
System clock select 2 to 0
SCK2 SCK1 SCK0
0
0
0 Bus master set to high-speed mode.
1 Medium-speed clock: ø/2
1
0 Medium-speed clock: ø//4
1 Medium-speed clock: ø8
1
0
0 Medium-speed clock: ø/16
1 Medium-speed clock: ø/32
1
——
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.
ø clock output disable
PSTOP High-speed mode,
medium-speed mode,
sub-active mode
0 ø output (initial value)
1
High level (fixed)
Sleep mode,
sub-sleep mode
ø output
High level (fixed)
Software standby mode,
watch mode, direct transition
High level (fixed)
High level (fixed)
Hardware standby
mode
High impedance
High impedance
1219