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| 型號(hào)： | M30222 |
| 廠(chǎng)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(jī) |
| 文件頁(yè)數(shù)： | 23/237頁(yè) |
| 文件大?。?/td> | 2297K |
| 代理商： | M30222 |
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1-24
dUnde
Specifications in this manual are tentative and subject to change
Rev. G
Clock Generating Circuit
MITSUBISHI MICROCOMPUTERS
M30222 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Fig. 1.14. Clock control registers 0 and 1
System clock control register 0 (Note 1)
Symbol
CM0
Address
0006
16
When reset
48
16
Bit name
Function
Bit symbol
b7
b6
b5
b4
b3
b2
b1
b0
0 0 : I/O port P7
5
0 1 : f
C1
output
1 0 : f
1
output
1 1 : Clock divide counter output
0 : Do not stop peripheral function clock in wait mode
1 : Stop peripheral function clock in wait mode (Note 7)
0 : LOW
1 : HIGH
b1 b0
CM07
CM05
CM04
CM03
CM01
CM02
CM00
CM06
Clock output function
select bits
WAIT peripheral function
clock stop bit
Xcin-Xout drive capacity
select bit (Note 2)
0 : I/O port
1 : Xcin - Xcout generation
0 : Main clock on
1 : Main clock off
0 : CM16 and CM17 valid
1 : Division by 8 mode
0 : Xin, Xout
Xcin, Xcout
1 :
Main clock (X
in
-X
out
)
stop bit (Note 3, 4)
Main clock division select
bit 0 (Note 6)
System clock select bit
(Note 5)
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 shifting to stop mode and at a reset.
Note 3: When inputting external clock, only clock oscillation buffer is stopped and clock input is acceptable.
Note 4: If this bit is set to "1", X
out
turns "H". The built-in feedback resistor remains being connected, so X
IN
turns
pulled up to X
out
("H") via the feedback resistor.
Note 5: Set subclock (X
cin
- X
cout
) enable bit (CM04) to "1" and allow the subclock to stabilize before setting CM07 from
from "0" to "1". Do not write to both bits at the same time. Likewise, set the main clock stop bit (CM05) to "0" and
allow the subclock to stabilize before settng CM07 bit from "1" to "0".
Note 6: This bit changes to "1" when shifting from high-speed/medium-speed mode to stop mode and at a reset. When
shifting from low-speed/low power dissipation mode to stop mode, the value before stop mode is retained.
Note 7: f
C
, f
C132
, f
C1
, f
C32
is not included.
System clock control register 1 (Note 1)
Symbol
CM1
Address
0007
16
When reset
20
16
Bit name
Function
Bit symbol
b7
b6
b5
b4
b3
0
b2
0
b1
0
b0
CM10
All clock stop control bit
(Note 4)
0 : Clock on
1 : All clocks off (stop mode)
Note 1: Set bit 0 of the protect register (address 000A
16
) to
"1" before writing to this register.
Note 2: This bit changes to "1" when shifting from high-speed/medium-speed mode to stop mode and at a reset. When
shifting from low-speed/low power dissipation mode to stop mode, the value before stop mode is retained.
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.
Note 4: If this bit is set to "1", X
out
goes "H", and the built-in feedback resistor is cut off. Xcin and Xcout goes into high
impedance state.
CM15
X
in
-X
out
drive capacity
select bit (Note 2)
0 : LOW
1 : HIGH
W
R
W
R
CM16
CM17
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
Reserved bit
Always set to
"0"
CM14
f
C132
clock select bit
0 : f
C32
1 : f
C1
Port Xc Select Bit
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| M30222FG | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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| M30222FG-XXXFP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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