参数资料
型号: M30102F3FP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP48
封装: 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48
文件页数: 82/166页
文件大小: 2060K
代理商: M30102F3FP
Under
development
Tentative Specifications REV.E1
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M30100/M30102 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
19
Clock Generating Circuit
The clock generating circuit contains three oscillator circuits that supply the operating clock sources to the
CPU and internal peripheral units.
Example of oscillator circuit
Figure 1.8.1 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. Figure 1.8.2 shows some examples of
sub-clock circuits, one using an oscillator connected to the circuit, and the other one using an externally
derived clock for input. Circuit constants in Figures 1.8.1 and 1.8.2 vary with each oscillator used. Use the
values recommended by the manufacturer of your oscillator.
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. Also, if the oscillator
manufacturer's data sheet specifies that a feedback resistor be added external to the chip, insert a feedback
resistor between XIN and XOUT following the instruction.
Microcomputer
XIN
XOUT
R
C
Microcomputer
(Built-in feedback resistor)
External ceramic oscillator
External RC oscillator
External clock input
Clock Generating Circuit
Table 1.8.1. Main clock, sub-clock, and ring oscillator generating circuits
Main clock generating circuit
Sub clock generating circuit
Ring oscillator generating circuit
Use of clock
CPU’s operating clock source CPU’s operating clock source CPU’s operating clock source
Internal peripheral units’ Timer 1/X/Y/Z’s count
Internal peripheral units’
operating clock source
clock source
operating clock source
Timer Y’s count clock
source
Usable oscillator (Note) Ceramic, crystal or RC
Crystal oscillator
oscillator
Pins to connect oscillator XIN, XOUT
XCIN, XCOUT
None (has internal pins)
Oscillation stop/restart function Available
Available
Oscillator status immediately Oscillating
Stopped
Oscillating
after reset
Other
Externally derived clock can be input
Note : When not using the main clock generating circuit, pull up the XIN pin and leave the XOUT pin open.
Also, set the main clock stop bit (bit 5 of address 0006) to "1" (stop).
Figure 1.8.1. Examples of main clock
相关PDF资料
PDF描述
M30622M4-XXXGP 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP100
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M30102M6T-XXXFP 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP48
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