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參數(shù)資料
| 型號： | M30240E4-XXXFP |
| 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)： | 23/142頁 |
| 文件大小： | 1637K |
| 代理商： | M30240E4-XXXFP |
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1-23
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
Software Reset
When the RESET pin level = “L”, all ports change to input mode (floating.) Table 1.4 shows the status
of the other pins while the RESET pin level is “L”.
Table 1.4:
Main clock-generating circuits
2.6 Software Reset
Writing a “1” to bit 3 of the processor mode register 0 (address 0004
16
) applies a (software) reset to the
microcomputer. A software reset has almost the same effect as a hardware reset with the following
exceptions:
The contents of internal RAM are preserved
All USB, DC-DC converter, and PLL SFR values are preserved. (See Section 2.4)
2.7 Clock-Generating Circuit
The clock-generating circuit contains one oscillator circuit that supplies the operating clock sources to
the CPU and internal peripheral units.Example of oscillator circuit
Figure 1.11 shows some examples of the main clock circuit, one using an oscillator connected to the
circuit, and the other one using an externally derived clock for input. Circuit constants in Figure 1.11 vary
with each oscillator used. Use circuit constant values recommended by the oscillator manufacturer.
Figure 1.11: Examples of clock source
Functions
Main clock-generating circuit
Use of clock
CPU’s operating clock source
Internal peripheral units’ operating clock source
Usable oscillator
Ceramic or crystal oscillator
Pins to connect oscillator
Xin
, Xout
Oscillation stop/restart function
Available
Oscillator status immediately after reset
Oscillating
Microcomputer
(Built-in feedback resistor)
X
IN
X
OUT
Open
Externally derived clock
Vcc
Vss
Microcomputer
(Built-in feedback resistor)
X
IN
X
OUT
R
d
C
IN
C
OUT
(Note)
Note: Insert a damping resistor if required. The resistance will vary depending on the oscillator and the oscillation drive
capacity setting. Use the value recommended by the maker of the oscillator.
When the oscillation drive capacity is set to low, check that oscillation is stable.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M30240E5 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240E5-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240E6 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240E6-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240E7 | 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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