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