M30620FCAFP datasheet(491/615 Pages) RENESAS

491 / 615 page

Power Control

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

2-174

Figure 2.15.1. State transition diagram of power control mode

Transition of stop mode, wait mode

Transition of normal mode

Reset

Medium-speed mode

(divided-by-8 mode)

Interrupt

CM10 = “1”

All oscillators stopped

CPU operation stopped

Medium-speed mode

(divided-by-8 mode)

BCLK : f(XIN)/8

CM07 = “0” CM06 = “1”

Low-speed mode

High-speed mode

Main clock is oscillating

Sub clock is stopped

Main clock is oscillating

Sub clock is stopped

Main clock is stopped

Sub clock is oscillating

Main clock is oscillating

Sub clock is oscillating

Low power dissipation mode

High-speed/medium-

speed mode

Low-speed/low power

dissipation mode

Normal mode

Stop mode

All oscillators stopped

Wait mode

CPU operation stopped

Interrupt

WAIT

instruction

Interrupt

WAIT

instruction

Interrupt

WAIT

instruction

CM10 = “1”

Interrupt

CM10 = “1”

BCLK : f(XIN)/2

CM07 = “0” CM06 = “0”

CM17 = “0” CM16 = “1”

Medium-speed mode

(divided-by-2 mode)

BCLK : f(XIN)/16

CM07 = “0” CM06 = “0”

CM17 = “1” CM16 = “1”

Medium-speed mode

(divided-by-16 mode)

BCLK : f(XIN)/4

CM07 = “0” CM06 = “0”

CM17 = “1” CM16 = “0”

Medium-speed mode

(divided-by-4 mode)

BCLK : f(XIN)

CM07 = “0” CM06 = “0”

CM17 = “0” CM16 = “0”

BCLK : f(XIN)/8

Medium-speed mode

(divided-by-8 mode)

CM07 = “0”

CM06 = “1”

High-speed mode

BCLK : f(XIN)/2

CM07 = “0” CM06 = “0”

CM17 = “0” CM16 = “1”

Medium-speed mode

(divided-by-2 mode)

BCLK : f(XIN)/16

CM07 = “0” CM06 = “0”

CM17 = “1” CM16 = “1”

Medium-speed mode

(divided-by-16 mode)

BCLK : f(XIN)/4

CM07 = “0” CM06 = “0”

CM17 = “1” CM16 = “0”

Medium-speed mode

(divided-by-4 mode)

BCLK : f(XIN)

CM07 = “0” CM06 = “0”

CM17 = “0” CM16 = “0”

BCLK : f(XCIN)

CM07 = “1”

BCLK : f(XCIN)

CM07 = “1”

Main clock is oscillating

Sub clock is oscillating

CM07 = “0”

(Note 1, 3)

CM07 = “0” (Note 1)

CM06 = “1”

CM04 = “0”

CM07 = “1”

(Note 2)

CM07 = “0” (Note 1)

CM06 = “0” (Note 3)

CM04 = “1”

CM07 = “1” (Note 2)

CM05 = “1”

CM05 = “0”

CM05 = “1”

CM04 = “0”

CM04 = “1”

CM06 = “0”

(Notes 1,3)

CM06 = “1”

CM04 = “0”

CM04 = “1”

(Notes 1, 3)

Note 1: Switch clock after oscillation of main clock is sufficiently stable.

Note 2: Switch clock after oscillation of sub clock is sufficiently stable.

Note 3: Change CM06 after changing CM17 and CM16.

Note 4: Transit in accordance with arrow.

(Refer to the following for the transition of normal mode.)

M30620FCAFP Datasheet(PDF) 491 Page - Renesas Technology Corp

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