HD6432633 Datasheet, PDF (1277/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

LPWRCR—Low-Power Control Register
H'FDEC
System
Bit
:7
6
5
4
3
DTON^*1 LSON^*1 NESEL^*1 SUBSTP^*1 RFCUT^*1
Initial value : 0
0
0
0
0
R/W
: R/W
R/W
R/W
R/W
R/W
2
—
0
R/W
1
STC1
0
R/W
0
STC0
0
R/W
Frequency multiplier
STC1
STC0
0
0
1
1
0
1
× 1 (initial value)
×2
×4
Do not set.
Note: A system clock frequency multiplied by the
multiplication factor (STC1 and STC0) should not
exceed the maximum operating frequency defined
in section 25, 26, and 27, Electrical Characteristics.
Oscillator circuit feedback resistor control bit
0 Feedback resistor ON when main clock
operating; OFF when not operation.
1 Feedback resistor OFF.
Subclock enable
0 Subclock generation enabled.
1 Subclock generation disabled.
Noise elimination sampling frequency select
0 Sampling uses ø/32 clock.
1 Sampling uses ø/4 clock.
Low-speed ON flag
0 • When the SLEEP command is executed in high-speed mode or medium-speed mode, operation
transfers to sleep mode, software standby mode, or watch mode*.
• When the SLEEP command is executed in sub-active mode*, operation transfers to watch mode*, or
directly to high-speed mode.
• Operation transfers to high-speed mode after watch mode* is canceled.
1 • When the SLEEP command is executed in high-speed mode, operation transfers to watch mode* or
sub-active mode.
• When the SLEEP command is executed in sub-active mode*, operation transfers to sub-sleep mode
or watch mode*.
• Operation transfers to sub-active mode immediately watch mode* is canceled.
Note: * Always select high-speed mode when transferring to watch mode or sub-active mode.
Direct transfer ON flag
0 • When the SLEEP command is executed in high-speed mode or medium-speed mode, operation transfers to sleep
mode, software standby mode, or watch mode*.
• When the SLEEP command is executed in sub-active mode, operation transfers to sub-sleep mode or watch mode*.
1 • When the SLEEP command is executed in high-speed mode or medium-speed mode, operation transfers directly to
sub-active mode*, or transfers to sleep mode or software standby mode.
• When the SLEEP command is executed in sub-active mode*, operation transfers directly to high-speed mode or
transfers to sub-sleep mode.
Note: * Always select high-speed mode when transferring to watch mode or sub-active mode.
Note: *1 The H8S/2695 has no subclock function, so only a 0 may be written to this bit.
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