M30201F4-XXXSP 데이터 시트보기 (PDF) - MITSUBISHI ELECTRIC

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M30201F4-XXXSP

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

CPolowcekrGSeanveinragting Circuit

Mitsubishi microcomputers

M30201 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Power Saving

There are three power save modes.

(1) Normal operating mode

• High-speed mode

In this mode, one main clock cycle forms BCLK. The CPU operates on the BCLK. The peripheral

functions operate on the clocks specified for each respective function.

• Medium-speed mode

In this mode, the main clock is divided into 2, 4, 8, or 16 to form BCLK. The CPU operates on the

BCLK. The peripheral functions operated on the clocks specified for each respective function.

• Low-speed mode

In this mode, fc forms BCLK. The CPU operates on the fc clock. fc is the clock supplied by the

subclock. The peripheral functions operate on the clocks specified for each respective function.

• Low power-dissipation mode

This mode is selected when the main clock is stopped from low-speed mode. The CPU operates on

the fc clock. fc is the clock supplied by the subclock. Only the peripheral functions for which the

subclock was selected as the count source continue to run.

(2) Wait mode

CPU operation is halted in this mode. The oscillator continues to run.

(3) Stop mode

All oscillators stop in this mode. The CPU and internal peripheral functions all stop. Of all 3 power saving

modes, power savings are greatest in this mode.

Figure 1.20 shows the transition between each of the three modes, (1), (2), and (3).

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