參數(shù)資料
型號(hào)： M30240M6-XXXFP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80
封裝： 0.80 MM PITCH, PLASTIC, QFP-80
文件頁數(shù)： 55/139頁
文件大?。?/td> 1453K
代理商： M30240M6-XXXFP
22
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Specifications REV. G
Specifications in this manual are tentative and subject to change
Clock-Generating Circuit
1.2.5.2 Software Reset
Writing a “1” to bit 3 of the processor mode register 0 (address 000416) 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
USB registers (030016 to 033C16), USB attach/detach register (001F16), USB control register
(000C16), and Frequency synthesizer related registers (03DB16-03DF16) values are preserved.
1.2.6 Clock-Generating Circuit
The clock-generating circuit contains one oscillator circuit that supplies the operating clock sources to
the CPU and internal peripheral units. Table 1.5 shows the main clock generating circuits.
Table 1.5:
Main clock-generating circuits
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
1.2.6.1 Clock Control
Figure 1.12 shows the block diagram of the clock-generating circuit.
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
Xin
Xout
Externally derived clock
Open
Vcc
Vss
Microcomputer
(Built-in feedback resistor)
Xin
Xout
Rd
Cin
Cout
(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.
(Built-in feedback resistor)
相關(guān)PDF資料
PDF描述
M30240M6-XXXFP 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80
M30240M5-XXXFP 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80
M30240M6-XXXXFP 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80
M30240ECFP 16-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PQFP80
M30240M5-XXXXFP 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80
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