Chapter 4 I/O Ports

4-9-2

PAOUT

Registers

7

6

5

4

3

2

1

0

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

PAOUT6 PAOUT5 PAOUT4 PAOUT3 PAOUT2 PAOUT1 PAOUT0

 

 

 

 

 

 

 

 

 

 

PAOUT

Output data

 

 

 

 

 

 

 

 

 

 

 

 

 

0

Low (Vss level)

 

 

 

 

 

 

 

 

 

1

High (Vdd level)

 

 

 

 

 

 

Port A output register (PAOUT: X'03F1A', R/W)

PAIN

7

6

5

4

3

2

1

0

PAIN6 PAIN5 PAIN4 PAIN3 PAIN2 PAIN1 PAIN0

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

PAIN

Input data

0Pin is low (Vss level)

1Pin is high (Vdd level)

PADIR

Port A intput register (PAIN: X'03F2A', R)

 

7

 

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

PADIR6

PADIR5

PADIR4

PADIR3

PADIR2

PADIR1

PADIR0

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PADIR

I/O mode selection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

Input mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Output mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Port A direction control register (PADIR: X'03F3A', R/W)

PAPLUD

7

6

5

4

3

2

1

0

PAPLUD6 PAPLUD5 PAPLUD4 PAPLUD3 PAPLUD2 PAPLUD1 PAPLUD0

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

PAPLUD

Pull-up (or pull-down)

resistor selection

 

0No pull-up (or pull-down) resistor

1Pull-up (or Pull-down) resistor

Port A pull-up/pull-down resistor control register (PAPLUD: X'03F4A', R/W)

Figure 4-9-1 Port A Registers (1/2)

IV - 42 Port A

Page 192
Image 192
Panasonic MN101C77C, F77G user manual Port a output register Paout X03F1A, R/W