P3 Port Group - Epson S1C17M20 Technical Manual

P2SELy = 0
Port P2yMUX = 0x0
name (Function 0)
GPIO
Peripheral
P20 P20 –
P21 P21 –
P22 P22 –
P23 P23 –
P24 P24 T16B Ch.1 EXCL10
P25 P25 T16B Ch.1 EXCL11
P26 P26 –
P27 P27 –
*1: Refer to the "Universal Port Multiplexer" chapter.

6.7.4 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
S1C17M20/M21/M22/M23/M24/M25
TECHNICAL MANUAL (Rev. 1.0)
Table 6.7.3.2 P2 Port Group Function Assignment
P2yMUX = 0x1
(Function 1)
Pin Peripheral
– UPMUX
– UPMUX
– UPMUX
– UPMUX
UPMUX
UPMUX
– UPMUX
– UPMUX
Table 6.7.4.1 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 Peripheral
*1 ADC12A ADIN07
ADC12A ADIN06
*1
ADC12A ADIN05
*1
ADC12A ADIN04
*1
ADC12A ADIN03
*1
ADC12A ADIN02
*1
ADC12A ADIN01
*1
ADC12A ADIN00
*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
6 I/O PORTS (PPORT)
P2yMUX = 0x3
M20/M23 M21/
(Function 3)
Pin
24pin 32pin
– – – –
– – – –
– – –
✓
– – –
✓
– –
✓ ✓
– –
✓ ✓
– –
✓ ✓
– –
✓ ✓
M20/M23 M21/
Remarks
24pin 32pin
– –
– –
– –
– –
– –
✓ ✓
✓ ✓
✓ ✓
– –
– –
– –
– –
– –
✓ ✓
✓ ✓
✓ ✓
– –
– –
– –
– –
– –
✓ ✓
✓ ✓
✓ ✓
– –
– –
– –
– –
– –
✓ ✓
✓ ✓
✓ ✓
M22/
M24 M25
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
✓ ✓
M22/
M24 M25
–
✓
–
✓
–
✓
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
–
✓
–
✓
–
✓
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
–
✓
–
✓
–
✓
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
–
✓
–
✓
–
✓
–
✓
–
✓
✓ ✓
✓ ✓
✓ ✓
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