P4 Port Group - Epson S1C17M20 Technical Manual

Register name Bit
P3MODSEL 15–8 –
(P3 Port Mode Select
7
Register)
6
5
4
3
2
1
0
P3FNCSEL 15–14 P37MUX[1:0]
(P3 Port Function
13–12 P36MUX[1:0]
Select Register)
11–10 P35MUX[1:0]
9–8 P34MUX[1:0]
7–6 P33MUX[1:0]
5–4 P32MUX[1:0]
3–2 P31MUX[1:0]
1–0 P30MUX[1:0]
P3SELy = 0
Port P3yMUX = 0x0
name (Function 0)
GPIO
Peripheral
P30 P30 –
P31 P31 CLG
P32 P32 RTCA
P33 P33 RFC Ch.0
P34 P34 RFC Ch.0
P35 P35 RFC Ch.0
P36 P36 RFC Ch.0
P37 P37 RFC Ch.1
*1: Refer to the "Universal Port Multiplexer" chapter.

6.7.5 P4 Port Group

The P4 port group supports the GPIO and interrupt functions.
Register name Bit
P4DAT 15–11 –
(P4 Port Data
10
Register)
9
8
7–3 –
2
1
0
P4IOEN 15–11 –
(P4 Port Enable
10
Register)
9
8
7–3 –
2
1
0
S1C17M20/M21/M22/M23/M24/M25
TECHNICAL MANUAL (Rev. 1.0)
Bit name Initial
0x00
P3SEL7 0
P3SEL6 0
P3SEL5 0
P3SEL4 0
P3SEL3 0
P3SEL2 0
P3SEL1 0
P3SEL0 0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
Table 6.7.4.2 P3 Port Group Function Assignment
P3yMUX = 0x1
(Function 1)
Pin Peripheral Pin
– UPMUX
EXOSC UPMUX
RTC1S UPMUX
SENB0 UPMUX
SENA0 UPMUX
REF0 UPMUX
RFIN0 UPMUX
SENB1 UPMUX
Table 6.7.5.1 Control Registers for P4 Port Group
Bit name Initial
0x00
P4OUT2 0
P4OUT1 0
P4OUT0 0
0x00
P4IN2 0
P4IN1 0
P4IN0 0
0x00
P4IEN2 0
P4IEN1 0
P4IEN0 0
0x00
P4OEN2 0
P4OEN1 0
P4OEN0 0
Seiko Epson Corporation
Reset R/W
– 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
P3SELy = 1
P3yMUX = 0x2
(Function 2)
Peripheral Pin Peripheral
ADC12A VREFA0
*1
– –
*1
SVD3 EXSVD0
*1
– –
*1
– –
*1
– –
*1
– –
*1
– –
*1
Reset R/W
– R –
H0 R/W –
H0 R/W
H0 R/W
– R –
H0 R –
H0 R
H0 R
– R –
H0 R/W –
H0 R/W
H0 R/W
– R –
H0 R/W –
H0 R/W
H0 R/W
6 I/O PORTS (PPORT)
M20/M23 M21/
Remarks
24pin 32pin
– –
– –
– –
– –
– –
– –
✓ ✓
✓ ✓
✓ ✓
– –
– –
– –
– –
– –
✓ ✓
✓ ✓
✓ ✓
P3yMUX = 0x3
M20/M23 M21/
(Function 3)
Pin
24pin 32pin
– –
✓ ✓
– –
✓ ✓
– –
✓ ✓
– – – –
– – – –
– – – –
– – – –
– – – –
M20/M23 M21/
Remarks
24pin 32pin
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
M22/
M24 M25
– –
–
✓
–
✓
–
✓
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
–
✓
–
✓
–
✓
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
M22/
M24 M25
✓ ✓
✓ ✓
✓ ✓
–
✓
–
✓
–
✓
–
✓
–
✓
M22/
M24 M25
– –
–
✓
–
✓
–
✓
– –
–
✓
–
✓
–
✓
– –
–
✓
–
✓
–
✓
– –
–
✓
–
✓
–
✓
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