Registers - Panasonic F77G User Manual

Chapter 4 I/O Ports
4-8-2

Registers

7 6
P8OUT P8OUT7 P8OUT6
Port 8 output register (P8OUT : x'03F18', R/W)
7 6
P8IN P8IN7 P8IN6
Port 8 input register (P8IN : x'03F28', R)
7 6
P8DIR P8DIR7 P8DIR6
Port 8 direction control register (P8DIR : x'03F38', R/W)
7 6
P8PLU P8PLU7 P8PLU6
Port 8 pull-up resistor control register (P8PLU : x'03F48', R/W)
IV - 38
Port 8
5 4 3 2
P8OUT5 P8OUT4 P8OUT3 P8OUT2 P8OUT1 P8OUT0
5 4 3 2
P8IN5 P8IN4 P8IN3 P8IN2
5 4 3 2
P8DIR5 P8DIR4 P8DIR3 P8DIR2 P8DIR1 P8DIR0
5 4 3 2
P8PLU5 P8PLU4 P8PLU3 P8PLU2 P8PLU1 P8PLU0
Figure 4-8-1 Port 8 Registers (1/2)
1 0
( At reset : 0 0 0 0 0 0 0 0 )
P8OUT
0
1
1 0
( At reset : X X X X X X X X )
P8IN1 P8IN0
P8IN
0
1
1 0
( At reset : 0 0 0 0 0 0 0 0 )
P8DIR
0
1
1 0
( At reset : 0 0 0 0 0 0 0 0 )
P8PLU
0
1
Output data
Low (V level)
SS
High (V level)
DD
Input data
Pin is Low (V level).
SS
Pin is High (V level).
DD
I/O mode selection
Input mode
Output mode
Pull-up resistor selection
No pull-up resistor
Pull-up resistor