M30240ECFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30240ECFP Datasheet - Page 27

• Manufacturer Part Number: M30240ECFP
• Description: M30240 Group Specification
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
Power Control
Table 1.7:
2.12 Power Control
The following is a description of the three available power control modes:
2.11.2 Division by 4 mode
2.11.3 Division by 8 mode
2.11.4 Division by 16 mode
2.11.5 No-division mode
Invalid
CM17
2.12.0.1 Normal Operation Mode
2.12.0.2 Wait mode
2.12.0.3 Stop Mode
0
1
1
0
The main clock is divided by 4 to obtain the internal clock .
The main clock is divided by 8 to obtain the internal clock
must have stabilized before transferring from this mode to another mode.
The main clock is divided by 16 to obtain the internal clock .
The main clock is used as internal clock.
• High-speed mode
Divide-by-1 frequency of the main clock become the internal clock . The CPU operates with the internal clock
selected. Each peripheral function operates according to its assigned clock.
• Medium-speed mode
Divide-by-2, divide-by-4, divide-by-8, or divide-by-16 frequency of the main clock becomes the internal clock
to its assigned clock.
The CPU operation is stopped. The oscillators do not stop.
All oscillators stop. The CPU and all built-in peripheral functions stop. Of the three modes listed, this mode is
the most effective in decreasing power consumption.
. The CPU operates according to the internal clock selected. Each peripheral function operates according
Operating modes dictated by settings of system clock control registers 0 and 1
Invalid
CM16
1
0
1
0
CM06
0
0
1
0
0
Division by 2 mode
Division by 4 mode
Division by 8 mode
Division by 16 mode
No-division mode
Operating mode of internal clock
1-27
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
. Note that oscillation of the main clock
Mitsubishi microcomputers
M30240 Group