7 I/O PORTS (PPORT)
S1C31D50/D51 TECHNICAL MANUAL
Seiko Epson Corporation
7-31
(Rev. 2.00)
7.7.9 P8 Port Group
The P8 port group supports the GPIO and interrupt functions.
Table 7.7.9.1 Control Registers for P8 Port Group
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
48
pin
64
pin
80
pin
100
pin
P8DAT
(P8 Port Data
Register)
15 P8OUT7
0
H0
R/W –
– –
✓
✓
14 P8OUT6
0
H0
R/W
– –
✓
✓
13 P8OUT5
0
H0
R/W
✓
✓
✓
✓
12 P8OUT4
0
H0
R/W
✓
✓
✓
✓
11 P8OUT3
0
H0
R/W
✓
✓
✓
✓
10 P8OUT2
0
H0
R/W
–
✓
✓
✓
9
P8OUT1
0
H0
R/W
–
✓
✓
✓
8
P8OUT0
0
H0
R/W
– –
✓
✓
7
P8IN7
0
H0
R
–
– –
✓
✓
6
P8IN6
0
H0
R
– –
✓
✓
5
P8IN5
0
H0
R
✓
✓
✓
✓
4
P8IN4
0
H0
R
✓
✓
✓
✓
3
P8IN3
0
H0
R
✓
✓
✓
✓
2
P8IN2
0
H0
R
–
✓
✓
✓
1
P8IN1
0
H0
R
–
✓
✓
✓
0
P8IN0
0
H0
R
– –
✓
✓
P8IOEN
(P8 Port Enable
Register)
15 P8IEN7
0
H0
R/W –
– –
✓
✓
14 P8IEN6
0
H0
R/W
– –
✓
✓
13 P8IEN5
0
H0
R/W
✓
✓
✓
✓
12 P8IEN4
0
H0
R/W
✓
✓
✓
✓
11 P8IEN3
0
H0
R/W
✓
✓
✓
✓
10 P8IEN2
0
H0
R/W
–
✓
✓
✓
9
P8IEN1
0
H0
R/W
–
✓
✓
✓
8
P8IEN0
0
H0
R/W
– –
✓
✓
7
P8OEN7
0
H0
R/W –
– –
✓
✓
6
P8OEN6
0
H0
R/W
– –
✓
✓
5
P8OEN5
0
H0
R/W
✓
✓
✓
✓
4
P8OEN4
0
H0
R/W
✓
✓
✓
✓
3
P8OEN3
0
H0
R/W
✓
✓
✓
✓
2
P8OEN2
0
H0
R/W
–
✓
✓
✓
1
P8OEN1
0
H0
R/W
–
✓
✓
✓
0
P8OEN0
0
H0
R/W
– –
✓
✓
P8RCTL
(P8 Port Pull-up/down
Control Register)
15 P8PDPU7
0
H0
R/W –
– –
✓
✓
14 P8PDPU6
0
H0
R/W
– –
✓
✓
13 P8PDPU5
0
H0
R/W
✓
✓
✓
✓
12 P8PDPU4
0
H0
R/W
✓
✓
✓
✓
11 P8PDPU3
0
H0
R/W
✓
✓
✓
✓
10 P8PDPU2
0
H0
R/W
–
✓
✓
✓
9
P8PDPU1
0
H0
R/W
–
✓
✓
✓
8
P8PDPU0
0
H0
R/W
– –
✓
✓
7
P8REN7
0
H0
R/W –
– –
✓
✓
6
P8REN6
0
H0
R/W
– –
✓
✓
5
P8REN5
0
H0
R/W
✓
✓
✓
✓
4
P8REN4
0
H0
R/W
✓
✓
✓
✓
3
P8REN3
0
H0
R/W
✓
✓
✓
✓
2
P8REN2
0
H0
R/W
–
✓
✓
✓
1
P8REN1
0
H0
R/W
–
✓
✓
✓
0
P8REN0
0
H0
R/W
– –
✓
✓