參數(shù)資料
型號: M30201F6
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述: 單片16位CMOS微機
文件頁數(shù): 43/159頁
文件大?。?/td> 2319K
代理商: M30201F6
Unde
Interrupts
Key Input Interrupt
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
43
Key Input Interrupt
If the direction register of any of P0
0
to P0
7
is set for input and a falling edge is input to that port, a key input
interrupt is generated. A key input interrupt can also be used as a key-on wakeup function for cancelling the
wait mode or stop mode. Figure 1.31 shows the block diagram of the key input interrupt. Note that if an “L”
level is input to any pin that has not been disabled for input, inputs to the other pins are not detected as an
interrupt.
Figure 1.31. Block diagram of key input interrupt
Interrupt control
circuit
Key input interrupt control register
(address 004D
16
)
Key input interrupt
request
P0
7
/KI
7
P0
6
/KI
6
P0
1
/KI
1
P0
0
/KI
0
Port P0
4
-P0
7
pull-up select
bit
Port P0
7
direction
register
Pull-up
transistor
Port P0
7
direction register
Port P0
6
direction
register
Port P0
1
direction
register
Port P0
0
direction
register
Pull-up
transistor
Pull-up
transistor
Pull-up
transistor
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