HD6433636SW datasheet(384/418 Pages) RENESAS

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370

SYSCR2—System control register 2

H'F1

System control

Bit

Initial value

Read/Write

—

DTON

R/W

SA0

R/W

MSON

R/W

SA1

R/W

NESEL

R/W

Direct transfer on flag

When a SLEEP instruction is executed in active mode, a transition is

made to standby mode, watch mode, or sleep mode.

When a SLEEP instruction is executed in subactive mode, a transition is

made to watch mode or subsleep mode.

When a SLEEP instruction is executed in active (high-speed) mode, a direct

transition is made to active (medium-speed) mode if SSBY = 0, MSON = 1, and

LSON = 0, or to subactive mode if SSBY = 1, TMA3 = 1, and LSON = 1.

Subactive mode clock select

ø /8

ø /4

ø /2

Noise elimination sampling frequency select

Sampling rate is ø

/16

Sampling rate is ø

OSC

When a SLEEP instruction is executed in active (medium-speed) mode, a direct

transition is made to active (high-speed) mode if SSBY = 0, MSON = 0, and

LSON = 0, or to subactive mode if SSBY = 1, TMA3 = 1, and LSON = 1.

When a SLEEP instruction is executed in subactive mode, a direct

transition is made to active (high-speed) mode if SSBY = 1, TMA3 = 1, LSON = 0,

and MSON = 0, or to active (medium-speed) mode if SSBY = 1, TMA3 = 1,

LSON = 0, and MSON = 1.

Medium speed on flag

Operates in active (high-speed) mode

Operates in active (medium-speed) mode

Note: Don’t care

HD6433636SW Datasheet(PDF) 384 Page - Renesas Technology Corp

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