參數(shù)資料
型號： M30240M1-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)： 43/125頁
文件大小： 753K
代理商： M30240M1-XXXFP
CONFIDENTIAL
26
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
Clock Control
Figure 13:
System clock control registers 0 and 1
System clock control register 0 (Note 1)
Note 1: Set bit 0 of the protect register (address 000A 16) to “1” before writing to this register.
Note 2: Changes to “1” when shiffing to stop mode.
Note 3: When entering power saving mode, main clock stops using this bit. When returning from stop
mode and operating with X IN, set this bit to “0”. When main clock oscillation is operating by
itself, set system clock select bit (CM07) to “1” before setting this bit to “1”.
Note 4: When inputting external clock, only clock oscillation buffer is stopped and clock input is acceptable.
Note 1: Set bit 0 of the protect register (address 000A 16) to “1” before writing to this register.
Note 2: Changes to “1” when shiffing to stop mode.
Note 3: Can be selected when bit 6 of the system clock control register 0 (address 0006 16) is “0”.
If “1”, division mode is fixed at 8.
System clock control register 1 (Note 1)
Symbol
Address
When reset
CM1
000716
2016
Bit name
Function
Bit symbol
b7
b6
b5
b4
b3
b2
b1
b0
CM10
All clock stop control bit
0 : Clock on
1 : All clocks off (stop mode)
CM15
XIN-XOUT drive capacity
select bit (Note 2)
0 : LOW
1 : HIGH
W
R
CM16
CM17
Reserved bit
Always set to
“0”
Reserved bit
Always set to
“0”
Main clock division
select bit 1 (Note 3)
0 0 : No division mode
0 1 : Division by 2 mode
1 0 : Division by 4 mode
1 1 : Division by 16 mode
b7 b6
0
Reserved bit
Always set to
“0”
Reserved bit
Always set to
“0”
0
Symbol
Address
When reset
CM0
000616
0016
Bit name
Function
Bit symbol
b7
b6
b5
b4
b3
b2
b1
b0
0 0 : I/O port P3 7
0 1 : Not used
1 0 : f8 output
1 1 : f32 output
b1 b0
CM01
CM02
CM00
Clock output function
select bit
WAIT peripheral function
clock stop bit
0 : Do not stop f 1, f8, f32 in wait mode
1 : Stop f1, f8, f32 in wait mode
W
R
CM05
CM06
Main clock (XIN-XOUT)
stop bit (Note 3) (Note 4)
0 : On
1 : Off
Main clock division select
bit 0 (Note 2)
0 : CM16 and CM17 valid
1 : Division by 8 mode
Reserved bit
Always set to "0"
Reserved bit
Always set to "0"
Reserved bit
Always set to "0"
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