m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 100
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m37905
Manufacturer Part Number
m37905
Description
Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.M37905.pdf
(565 pages)
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Fig. 6.10.1 Structure of external interrupt input read register
Fig. 6.10.2 Relationship between port P5 direction register and external interrupt’s input pins
Port P5 direction register
Note: ( ) shows the I/O pins of other internal peripheral devices which are multiplexed.
External interrupt input read register (Address 95
Bit
Bit
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Nothing is assigned.
Pin INT
Pin INT
Pin INT
Nothing is assigned.
Pin INT
Pin INT
Pin INT
INT
INT
INT
INT
INT
INT
INT
INT
0
1
2
3
4
5
6
7
read out bit
read out bit
read out bit
read out bit
read out bit
read out bit
read out bit
read out bit
1
2
3
5
6
7
Corresponding pin
(RTP
(RTP
(TB0
(TB1
(TB2
Bit name
IN
IN
IN
TRG1
TRG0
/IDW)
/IDV)
/IDU)
)
)
(Address D
16
7905 Group User’s Manual Rev.1.0
)
The input level at the corresponding pin is read out.
0 : “L” level
1 : “H” level
0 : Input mode
1 : Output mode
When using this pin as an external interrupt’s input
pin, be sure to clear the corresponding bit to “0.”
0 : Input mode
1 : Output mode
When using this pin as an external interrupt’s input
pin, be sure to clear the corresponding bit to “0.”
16
)
Function
Function
6.10 External interrupts
b7 b6 b5 b4 b3 b2 b1 b0
b7 b6 b5 b4 b3 b2 b1 b0
INTERRUPTS
At reset
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
Undefined
At reset
0
0
0
0
0
0
R/W
R/W
RW
RW
RW
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
RO
—
—
6-19
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