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參數(shù)資料
| 型號： | M30240M4-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, MROM, MICROCONTROLLER, PQFP80 |
| 封裝： | 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 45/125頁 |
| 文件大?。?/td> | 753K |
| 代理商： | M30240M4-XXXFP |
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CONFIDENTIAL
28
Mitsubishi microcomputers
M16C / 24 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Preliminary Specifications REV.B
Specifications in this manual are tentative and subject to change
Wait Mode
2.10 Wait Mode
When a WAIT instruction is executed, the internal clock
φ stops and the microcomputer enters the wait
mode. In this mode, oscillation continues but the internal clock
φ and watchdog timer stop. Writing “1” to
the WAIT peripheral function clock stop bit and executing a WAIT instruction stops the clock being
supplied to the internal peripheral functions, allowing power dissipation to be reduced. Table 5 shows
the status of the ports in wait mode.
Wait mode is cancelled by a hardware reset or interrupt. If an interrupt is used to cancel wait mode, the
microcomputer restarts using as internal clock
φ the clock that had been selected when the WAIT
instruction was executed.
Status Transition Of Internal Clock
φ
Power dissipation can be reduced and low-voltage operation achieved by changing the count source for
internal clock
φ. Table 6 shows the operating modes corresponding to the settings of system clock
control registers 0 and 1.
After a reset, operation defaults to division by 8 mode. When shifting to stop mode, the main clock
division select bit 0 (bit 6 at address 000616) is set to “1”. The following shows the operational modes
of internal clock
(1) Division by 2 mode
The main clock is divided by 2 to obtain the internal clock
φ.
(2) Division by 4 mode
The main clock is divided by 4 to obtain the internal clock
φ.
(3) Division by 8 mode
The main clock is divided by 8 to obtain the internal clock
φ. Note that oscillation of the main clock must
have stabilized before transferring from this mode to another mode.
(4) Division by 16 mode
The main clock is divided by 16 to obtain the internal clock
φ.
(5) No-division mode
The main clock is used as internal clock
Table 5:
Port status during wait mode
Pin
Single-chip mode
Port
Retains status before stop mode
CLKout
When f8, f32 selected
Does not stop when the WAIT peripheral function clock stop bit is “0”
When the WAIT peripheral function clock stop bit is “0”, the status immediately
prior to entering wait mode is maintained.
相關(guān)PDF資料 |
PDF描述 |
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| M30240M1-XXXFP | 16-BIT, MROM, MICROCONTROLLER, PQFP80 |
| M30245MC-XXXGP | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100 |
| M30245FCGP | 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100 |
| M30260F3VGP | 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP48 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M30240M5 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M5-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M6 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M6-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M7 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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