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參數(shù)資料
| 型號： | M37480MXT |
| 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)： | 41/97頁 |
| 文件大?。?/td> | 1076K |
| 代理商： | M37480MXT |
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41
MITSUBISHI MICROCOMPUTERS
7480/7481 GROUP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Recovery From Power-down Status By Key
Input Interrupt
(Key-on wake-up)
“Key-on wake-up” is one way of recovery from a power-down sta-
tus by using the STP or WIT instruction.
If an “L” level voltage is input to any pin of port P0 when bit 5 of
the edge polarity selection register is “1”, an interrupt occurs, and
a recovery can be made to the normal operating state. If a key
matrix of active “L” with port P0 as an input port is constructed, a
recovery can be made to the normal operating status by pressing
a key.
The key input interrupt is in common with the INT
1
interrupt. When
bit 5 of the edge polarity selection register is set to “1”, the key in-
put interrupt function is selected. If this bit is set to “1” except in
the power-down status, both INT
1
and key-on wake-up are invali-
dated.
Fig. 43 Block diagram of interrupt input/key-on wake-up circuit
P4
1
/CNTR
1
P4
0
/CNTR
0
P3
0
/INT
0
P3
1
/INT
1
P0
7
P0
1
EG
3
Port P4
1
data read circuit
CNTR
1
interrupt request signal
Port P4
0
data read circuit
CNTR
0
interrupt request signal
EG
0
Port P3
0
data read circuit
INT
0
interrupt request signal
Port P3
1
data read circuit
INT
1
interrupt request signal
CPU stop status signal
Port P0 data read circuit
EG
1
EG
5
P0
0
EG
2
Pull-up control
register
Direction register
Pull-up control
register
Direction register
Pull-up control
register
Direction register
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| M37481E8T | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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