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參數(shù)資料
| 型號： | M38073M4A00FP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機(jī) |
| 文件頁數(shù)： | 52/74頁 |
| 文件大小： | 1182K |
| 代理商： | M38073M4A00FP |
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52
MITSUBISHI MICROCOMPUTERS
3807 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
CM
4
: Port Xc switch bit
0 : I/O port function (stop oscillating)
1 : X
CIN
-X
COUT
oscillating function
CM
5
:
Main clock (X
IN
- X
OUT
) stop bit
0
: Operating
1
: Stopped
CM
7
,CM
6
: Main clock division ratio selection bit
b7
b6
0
0 :
f(X
IN
)/2 ( High-speed mode)
0
1 :
f(X
IN
)/8 (Middle-speed mode)
1
0 :
f(X
CIN
)/2 (Low-speed mode)
1
1 : Not available
=
=
=
Note
Reset
C
4
"
CM
4
"0" "1"
CM
6
"1" 0"
CM
4
"1" "0"
CM
6
"1" "0"
C
7
"
C
4
"
C
5
"
CM
6
"1 " "0 "
CM
6
"1 " "0 "
CPU mode register
(CPUM : address 003B
16
)
b7
b4
CM
7
"0" 1"
CM
6
"1" 0"
CM
7
=0
CM
6
=1
CM
5
=0(8MHz oscillating)
CM
4
=0(32kHz stopped)
1:Switch the mode by the allows shown between the mode blocks. (Do not switch between the mode directly without an allow. )
2:The all modes can be switched to the stop mode or the wait mode and return to the source mode when the stop mode or the wait
mode is ended.
3:Timer operates in the wait mode.
4:When the stop mode is ended, a delay of approximately 1 msoccurs by Timer 1 and Timer 2 in middle/high-speen mode.
5:When the stop mode is ended, a delay of approximately 0.25 s occurs by Timer 1 and Timer 2 in low-speed mode.
6:Wait until oscillation stabilizes after oscillating the main clock X
IN
before the switching from he low-speed mode to middle/high-
speed mode.
7:The example assumes that 8 MHzis being applied to the X
IN
pin and 32 kHz to the X
CIN
pin.
φ
indicates the internal clock.
Middle-speed mode
(f( ) =1 MHz)
CM
7
=0
CM
6
=1
CM
5
=0(8MHz oscillating)
CM
4
=1(32kHz oscillating)
Middle-speed mode
(f( ) =1MHz)
CM
7
=0
CM
6
=0
CM
5
=0(8MHz oscillating)
CM
4
=0(32kHz stopped)
High-speed mode
(f( ) =4MHz)
CM
7
=0
CM
6
=0
CM
5
=0(8MHz oscillating)
CM
4
=1(32kHz oscillating)
High-speed mode
(f( ) =4MHz)
CM
7
=1
CM
6
=0
CM
5
=0(8MHz oscillating)
CM
4
=1(32kHz oscillating)
Low-speed mode
(f( ) =16 kHz)
CM
7
=1
CM
6
=0
CM
5
=1(8MHz stopped)
CM
4
=1(32kHz oscillating)
Low-speed mode
(f( ) =16 kHz)
Fig. 58. State transitions of system clock
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