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參數(shù)資料
| 型號： | M37481E8T |
| 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 |
| 文件頁數(shù)： | 30/97頁 |
| 文件大小： | 1076K |
| 代理商： | M37481E8T |
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MITSUBISHI MICROCOMPUTERS
7480/7481 GROUP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
30
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
(1) Timer Mode
The frequency of f(X
IN
)/8, f(X
IN
)/64, f(X
IN
)/128 or f(X
IN
)/256 is
counted.
(2) Programmable Waveform Generation Mode
This operation is the same as the timer mode, except that a timer
outputs the level of the value set in the output level latch of the
timer 1 mode register/timer 2 mode register from the T
0
or T
1
pin
each time a timer underflows.
After the timer underflows, the timer can output an optional wave-
form from the T
0
or T
1
pin if the values of the output level latch and
timer latch are changed.
In this mode, set the port in common with the T
0
/T
1
pin as an out-
put port.
Fig. 26 Block diagram of timer 1, timer 2
G
Timers 1 and 2
Timer 1 and timer 2 are the 8-bit timers. They can select the fol-
lowing 2 modes by setting timer 1 mode register and timer 2 mode
register.
Timer mode
Programmable waveform generation mode
When the count source is changed, set it again as the timer value
may go wrong.
Fig. 27 Structure of timer 1/timer 2 mode register
Ti0 : Count operation
1 : Count stop
16
)
Timer 1 mode register (T1M : address 00F9
16
)
b7
b0
Ti0 : Timer mode
1 : Programmable waveform generation mode
O0 : “L” output
1 : “H” output
Ti0
0 : f(X
IN
)/8
0
IN
1
1 : f(X
IN
)/64
1
1 : f(X
IN
)/256
Not used (“0” at read)
Not used (“0” at read)
Timer mode register
Count stop
control bit
f(X
IN
)/8
f(X
IN
)/64
f(X
IN
)/128
f(X
IN
)/256
Timer interrupt
request bit
8
8
T
TL
8
8
Data bus
Data bus
Output
level latch
T
D
Q
Timer count source
selection bits
“00”
“01”
“10”
“11”
T
0
, T
1
output
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M37481E8T-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES |
| M37481E8T-XXXSP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37481E8-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES |
| M37481E8-XXXSP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37481M2T-XXXFP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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