Panasonic MN101C77C User Manual

IV - 31

Chapter 4    I/O Ports

Port 7

0

1

2

4

5

6

7

3

P7OUT

P7OUT6

P7OUT7

P7OUT5 P7OUT4 P7OUT3 P7OUT2 P7OUT1 P7OUT0

0

1

Low (V

SS

 level) 

Output data

High (V

DD

 level) 

P7OUT

0

1

2

4

5

6

7

3

P7IN

P7IN6

P7IN7

P7IN5

P7IN4

P7IN3

P7IN2

P7IN1

P7IN0

0

1

Pin is Low (V

SS

 level).

Input data

Pin is High (V

DD

 level).

P7IN

0

1

2

4

5

6

7

3

P7DIR

P7DIR6

P7DIR7

P7DIR5 P7DIR4 P7DIR3 P7DIR2 P7DIR1 P7DIR0

0

1

Input mode

I/O mode selection

Output mode

P7DIR

0

1

2

4

5

6

7

3

P7PLUD

P7PLUD6

P7PLUD7

P7PLUD5 P7PLUD4 P7PLUD3 P7PLUD2 P7PLUD1 P7PLUD0

0

1

No pull-up (or pull-down) resistor

Pull-up (or Pull-down)
resistor selection

Pull-up (or Pull-down) resistor

P7PLUD

Port 7 output register (P7OUT : x'03F17', R/W)

Port 7 input register (P7IN : x'03F27', R)

Port 7 direction control register (P7DIR : x'03F37', R/W)

Port 7 pull-up / pull-down resistor control register (P7PLUD : x'03F47', R/W)

( At reset : 0 0 0 0 0 0 0 0 )

( At reset : 0 0 0 0 0 0 0 0 )

( At reset : X X X X X X X X )

( At reset : 0 0 0 0 0 0 0 0 )