P3 Port Group - Epson S1C31D50 Technical Manual

P2SELy = 0
Port
P2yMUX = 0x0
name GPIO
(Function 0)
Peripheral
P20 P20 RFC
P21 P21 RFC
P22 P22 RFC
P23 P23 RFC
P24 P24 –
P25 P25 –
P26 P26 –
P27 P27 –
*1: Refer to the "Universal Port Multiplexer" chapter.

7.7.4 P3 Port Group

The P3 port group supports the GPIO and interrupt functions.
Register name Bit
P3DAT 15
(P3 Port Data
14
Register)
13
12
11
10
9
8
7
6
5
4
3
2
1
0
P3IOEN 15
(P3 Port Enable
14
Register)
13
12
11
10
9
8
7
6
5
4
3
2
1
0
S1C31D50/D51 TECHNICAL MANUAL
(Rev. 2.00)
Table 7.7.3.2 P2 Port Group Function Assignment
P2yMUX = 0x1
(Function 1)
Pin Peripheral
SENB0 UPMUX
SENA0 UPMUX
REF0 UPMUX
RFIN0 UPMUX
– UPMUX
– UPMUX
– UPMUX
– UPMUX
Table 7.7.4.1 Control Registers for P3 Port Group
Bit name Initial
P3OUT7 0
P3OUT6 0
P3OUT5 0
P3OUT4 0
P3OUT3 0
P3OUT2 0
P3OUT1 0
P3OUT0 0
P3IN7 0
P3IN6 0
P3IN5 0
P3IN4 0
P3IN3 0
P3IN2 0
P3IN1 0
P3IN0 0
P3IEN7 0
P3IEN6 0
P3IEN5 0
P3IEN4 0
P3IEN3 0
P3IEN2 0
P3IEN1 0
P3IEN0 0
P3OEN7 0
P3OEN6 0
P3OEN5 0
P3OEN4 0
P3OEN3 0
P3OEN2 0
P3OEN1 0
P3OEN0 0
Seiko Epson Corporation
P2SELy = 1
P2yMUX = 0x2
(Function 2)
Pin Peripheral Pin
– –
*1
– –
*1
– –
*1
*1 – –
– –
*1
– –
*1
– –
*1
– –
*1
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
7 I/O PORTS (PPORT)
P2yMUX = 0x3
48 64
(Function 3)
pin pin
Peripheral Pin
– –
✓ ✓
– –
✓ ✓
– –
✓ ✓
– –
✓ ✓
– – –
✓
– – –
✓
– – –
✓
– – –
✓
48 64
Remarks
pin pin
– –
– –
– –
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
– –
– –
– –
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
– –
– –
– –
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
– –
– –
– –
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
80 100
pin pin
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
80 100
pin pin
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
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