參數(shù)資料
型號: M30201F6SP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述: 單片16位CMOS微機
文件頁數(shù): 25/159頁
文件大?。?/td> 2319K
代理商: M30201F6SP
Clock Generating Circuit
Power Saving
Unde
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
25
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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