7 I/O PORTS (PPORT)
7.7 Control Register and Port Function Configuration of this IC
This section shows the PPORT control register/bit configuration in this IC and the list of peripheral I/O functions
selectable for each port.
7.7.1 P0 Port Group
The P0 port group supports the GPIO and interrupt functions.
Register name
Bit
P0DAT
15
(P0 Port Data
14
Register)
13
12
11
10
9
8
7
6
5
4
3
2
1
0
P0IOEN
15
(P0 Port Enable
14
Register)
13
12
11
10
9
8
7
6
5
4
3
2
1
0
P0RCTL
15
(P0 Port Pull-up/down
14
Control Register)
13
12
11
10
9
8
7
6
5
4
3
2
1
0
7-12
Table 7.7.1.1 Control Registers for P0 Port Group
Bit name
Initial
P0OUT7
0
P0OUT6
0
P0OUT5
0
P0OUT4
0
P0OUT3
0
P0OUT2
0
P0OUT1
0
P0OUT0
0
P0IN7
0
P0IN6
0
P0IN5
0
P0IN4
0
P0IN3
0
P0IN2
0
P0IN1
0
P0IN0
0
P0IEN7
0
P0IEN6
0
P0IEN5
0
P0IEN4
0
P0IEN3
0
P0IEN2
0
P0IEN1
0
P0IEN0
0
P0OEN7
0
P0OEN6
0
P0OEN5
0
P0OEN4
0
P0OEN3
0
P0OEN2
0
P0OEN1
0
P0OEN0
0
P0PDPU7
0
P0PDPU6
0
P0PDPU5
0
P0PDPU4
0
P0PDPU3
0
P0PDPU2
0
P0PDPU1
0
P0PDPU0
0
P0REN7
0
P0REN6
0
P0REN5
0
P0REN4
0
P0REN3
0
P0REN2
0
P0REN1
0
P0REN0
0
Seiko Epson Corporation
Reset
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
–
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
S1C31D41 TECHNICAL MANUAL
32
48
Remarks
pin
pin
pin
–
–
–
✓
–
✓
–
✓
–
✓
–
✓
–
–
–
–
–
–
–
✓
–
✓
–
✓
–
✓
–
✓
–
–
–
–
–
–
–
✓
–
✓
–
✓
–
✓
–
✓
–
–
–
–
–
–
–
✓
–
✓
–
✓
–
✓
–
✓
–
–
–
–
–
–
–
✓
–
✓
–
✓
–
✓
–
✓
–
–
–
–
–
–
–
✓
–
✓
–
✓
–
✓
–
✓
–
–
–
–
(Rev. 1.1)
64
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓