P3SELy = 0
Port
P3yMUX = 0x0
name
GPIO
(Function 0)
Peripheral
P30
P30
–
P31
P31
T16B Ch.1
P32
P32
T16B Ch.1
P33
P33
RFC
P34
P34
REMC3
P35
P35
REMC3
P36
P36
–
P37
P37
–
*1: Refer to the "Universal Port Multiplexer" chapter.
7.7.5 P4 Port Group
The P4 port group supports the GPIO and interrupt functions.
Register name
Bit
P4DAT
15–14 –
(P4 Port Data
13
Register)
12
11
10
9
8
7–6 –
5
4
3
2
1
0
P4IOEN
15–14 –
(P4 Port Enable
13
Register)
12
11
10
9
8
7–6 –
5
4
3
2
1
0
S1C31D41 TECHNICAL MANUAL
(Rev. 1.1)
Table 7.7.4.2 P3 Port Group Function Assignment
P3yMUX = 0x1
(Function 1)
Pin
Peripheral
–
UPMUX
EXCL10
UPMUX
EXCL11
UPMUX
RFCLKO0
UPMUX
REMO
UPMUX
CLPLS
UPMUX
–
UPMUX
–
UPMUX
Table 7.7.5.1 Control Registers for P4 Port Group
Bit name
Initial
0x0
P4OUT5
0
P4OUT4
0
P4OUT3
0
P4OUT2
0
P4OUT1
0
P4OUT0
0
0x0
P4IN5
0
P4IN4
0
P4IN3
0
P4IN2
0
P4IN1
0
P4IN0
0
0x0
P4IEN5
0
P4IEN4
0
P4IEN3
0
P4IEN2
0
P4IEN1
0
P4IEN0
0
0x0
P4OEN5
0
P4OEN4
0
P4OEN3
0
P4OEN2
0
P4OEN1
0
P4OEN0
0
Seiko Epson Corporation
P3SELy = 1
P3yMUX = 0x2
(Function 2)
Pin
Peripheral
Pin
–
–
*1
–
–
*1
–
–
*1
–
–
*1
–
–
*1
–
–
*1
–
–
*1
–
–
*1
Reset
R/W
–
R
–
H0
R/W
–
H0
R/W
H0
R/W
H0
R/W
H0
R/W
H0
R/W
–
R
–
H0
R
–
H0
R
H0
R
H0
R
H0
R
H0
R
–
R
–
H0
R/W
–
H0
R/W
H0
R/W
H0
R/W
H0
R/W
H0
R/W
–
R
–
H0
R/W
–
H0
R/W
H0
R/W
H0
R/W
H0
R/W
H0
R/W
7 I/O PORTS (PPORT)
32
48
P3yMUX = 0x3
pin
pin
(Function 3)
Peripheral
Pin
–
–
–
–
–
–
✓
✓
–
–
✓
✓
–
–
–
✓
–
–
–
✓
–
–
–
✓
–
–
–
–
–
–
–
–
32
48
Remarks
pin
pin
–
–
–
✓
✓
✓
✓
✓
✓
✓
–
–
–
–
–
–
–
✓
✓
✓
✓
✓
✓
✓
–
–
–
–
–
–
–
✓
✓
✓
✓
✓
✓
✓
–
–
–
–
–
–
–
✓
✓
✓
✓
✓
✓
✓
–
–
–
–
64
pin
✓
✓
✓
✓
✓
✓
✓
✓
64
pin
–
✓
✓
✓
✓
✓
✓
–
✓
✓
✓
✓
✓
✓
–
✓
✓
✓
✓
✓
✓
–
✓
✓
✓
✓
✓
✓
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