7477 datasheet(189/354 Pages) RENESAS

189 / 354 page

7470/7471/7477/7478 GROUP USER’S MANUAL

1-172

HARDWARE

1.18 State transitions

Fig. 1.18.1 State transitions

Ordinary mode

State A

CPUM 0

Reset

CPUM 0

CPUM

f(XIN): Stopped

f(XCIN): Stopped

Internal clock

φ: Stopped

b7 b6 b5 b4

(Note 2)

(Note 3)

STP

instruction

Interrupt (Note 1)

0 —

Stop mode

State F

f(XIN): Oscillating

f(XCIN): Stopped

Internal clock

φ: f(XIN)/2

f(XIN): Oscillating

f(XCIN): Stopped

Internal clock

φ: Stopped

Wait mode

State E

WIT

instruction

Interrupt

f(XIN): Oscillating

f(XCIN): Oscillating

Internal clock

φ: Stopped

WIT

instruction

Interrupt

WIT

instruction

Interrupt

f(XIN): Oscillating

f(XCIN): Oscillating

Internal clock

φ: Stopped

f(XIN): Stopped

f(XCIN): Oscillating

Internal clock

φ: Stopped

Sub-clock mode

State G

WIT

instruction

Interrupt

—

Ordinary mode

State B

f(XIN): Oscillating

f(XCIN): Oscillating

Internal clock

φ: f(XIN)/2

Low-speed mode

State C

(Note 3)

(Note 4)

f(XIN): Oscillating

f(XCIN): Oscillating

Internal clock

φ: f(XCIN)/2

Low-speed mode

State D

(Note 4)

—

f(XIN): Stopped

f(XCIN): Oscillating

Internal clock

φ: f(XCIN)/2

STP

instruction

Interrupt (Note 1)

STP

instruction

Interrupt (Note 1)

STP

instruction

Interrupt (Note 1)

f(XIN): Stopped

f(XCIN): Stopped

Internal clock

φ: Stopped

f(XIN): Stopped

f(XCIN): Stopped

Internal clock

φ: Stopped

f(XIN): Stopped

f(XCIN): Stopped

Internal clock

φ: Stopped

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