7 I/O PORTS (PPORT)
S1C31D50/D51 TECHNICAL MANUAL
Seiko Epson Corporation
7-21
(Rev. 2.00)
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
48
pin
64
pin
80
pin
100
pin
P3MODSEL
(P3 Port Mode Select
Register)
15–8 –
0x00
–
R
–
– – – –
7
P3SEL7
0
H0
R/W –
– – –
✓
6
P3SEL6
0
H0
R/W
– – –
✓
5
P3SEL5
0
H0
R/W
– –
✓
✓
4
P3SEL4
0
H0
R/W
–
✓
✓
✓
3
P3SEL3
0
H0
R/W
–
✓
✓
✓
2
P3SEL2
0
H0
R/W
✓
✓
✓
✓
1
P3SEL1
0
H0
R/W
✓
✓
✓
✓
0
P3SEL0
0
H0
R/W
✓
✓
✓
✓
P3FNCSEL
(P3 Port Function
Select Register)
15–14 P37MUX[1:0]
0x0
H0
R/W –
– – –
✓
13–12 P36MUX[1:0]
0x0
H0
R/W
– – –
✓
11–10 P35MUX[1:0]
0x0
H0
R/W
– –
✓
✓
9–8 P34MUX[1:0]
0x0
H0
R/W
–
✓
✓
✓
7–6 P33MUX[1:0]
0x0
H0
R/W
–
✓
✓
✓
5–4 P32MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
3–2 P31MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
1–0 P30MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
Table 7.7.4.2 P3 Port Group Function Assignment
Port
name
P3SELy = 0
P3SELy = 1
48
pin
64
pin
80
pin
100
pin
GPIO
P3yMUX = 0x0
(Function 0)
P3yMUX = 0x1
(Function 1)
P3yMUX = 0x2
(Function 2)
P3yMUX = 0x3
(Function 3)
Peripheral
Pin
Peripheral
Pin
Peripheral
Pin
Peripheral
Pin
P30
P30
RFC
RFCLKO0 UPMUX
*
1
–
–
–
–
✓
✓
✓
✓
P31
P31
REMC3
REMO
UPMUX
*
1
–
–
–
–
✓
✓
✓
✓
P32
P32
REMC3
CLPLS
UPMUX
*
1
–
–
–
–
✓
✓
✓
✓
P33
P33
–
–
UPMUX
*
1
–
–
–
–
–
✓
✓
✓
P34
P34
–
–
UPMUX
*
1
–
–
–
–
–
✓
✓
✓
P35
P35
–
–
UPMUX
*
1
–
–
–
–
– –
✓
✓
P36
P36
–
–
UPMUX
*
1
–
–
–
–
– – –
✓
P37
P37
–
–
UPMUX
*
1
–
–
–
–
– – –
✓
*
1: Refer to the “Universal Port Multiplexer” chapter.
7.7.5 P4 Port Group
The P4 port group supports the GPIO and interrupt functions.
Table 7.7.5.1 Control Registers for P4 Port Group
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
48
pin
64
pin
80
pin
100
pin
P4DAT
(P4 Port Data
Register)
15 P4OUT7
0
H0
R/W –
– – –
✓
14 P4OUT6
0
H0
R/W
✓
✓
✓
✓
13 P4OUT5
0
H0
R/W
✓
✓
✓
✓
12 P4OUT4
0
H0
R/W
–
✓
✓
✓
11 P4OUT3
0
H0
R/W
–
✓
✓
✓
10 P4OUT2
0
H0
R/W
– –
✓
✓
9
P4OUT1
0
H0
R/W
– –
✓
✓
8
P4OUT0
0
H0
R/W
✓
✓
✓
✓
7
P4IN7
0
H0
R
–
– – –
✓
6
P4IN6
0
H0
R
✓
✓
✓
✓
5
P4IN5
0
H0
R
✓
✓
✓
✓
4
P4IN4
0
H0
R
–
✓
✓
✓
3
P4IN3
0
H0
R
–
✓
✓
✓
2
P4IN2
0
H0
R
– –
✓
✓
1
P4IN1
0
H0
R
– –
✓
✓
0
P4IN0
0
H0
R
✓
✓
✓
✓