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Address
Register name
0x0020
P7MODSEL
027c
(P7 Port Mode Select
Register)
0x0020
P7FNCSEL
027e
(P7 Port Function
Select Register)
0x0020
P8DAT
0280
(P8 Port Data
Register)
0x0020
P8IOEN
0282
(P8 Port Enable
Register)
S1C31D50/D51 TECHNICAL MANUAL
(Rev. 2.00)
APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
Bit
Bit name
15–8 –
7
P7SEL7
6
P7SEL6
5
P7SEL5
4
P7SEL4
3
P7SEL3
2
P7SEL2
1
P7SEL1
0
P7SEL0
15–14 P77MUX[1:0]
13–12 P76MUX[1:0]
11–10 P75MUX[1:0]
9–8 P74MUX[1:0]
7–6 P73MUX[1:0]
5–4 P72MUX[1:0]
3–2 P71MUX[1:0]
1–0 P70MUX[1:0]
15
P8OUT7
14
P8OUT6
13
P8OUT5
12
P8OUT4
11
P8OUT3
10
P8OUT2
9
P8OUT1
8
P8OUT0
7
P8IN7
6
P8IN6
5
P8IN5
4
P8IN4
3
P8IN3
2
P8IN2
1
P8IN1
0
P8IN0
15
P8IEN7
14
P8IEN6
13
P8IEN5
12
P8IEN4
11
P8IEN3
10
P8IEN2
9
P8IEN1
8
P8IEN0
7
P8OEN7
6
P8OEN6
5
P8OEN5
4
P8OEN4
3
P8OEN3
2
P8OEN2
1
P8OEN1
0
P8OEN0
Seiko Epson Corporation
Initial
Reset
R/W
0x00
–
R
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0x0
H0
R/W
0x0
H0
R/W
0x0
H0
R/W
0x0
H0
R/W
0x0
H0
R/W
0x0
H0
R/W
0x0
H0
R/W
0x0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R
0
H0
R
0
H0
R
0
H0
R
0
H0
R
0
H0
R
0
H0
R
0
H0
R
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
0
H0
R/W
48
64
80
100
Remarks
pin
pin
pin
pin
–
–
–
–
–
–
–
–
✓
–
–
–
✓
–
–
–
✓
–
–
✓ ✓
✓
✓
✓ ✓
✓
✓
✓ ✓
–
✓
✓ ✓
–
✓
✓ ✓
–
–
–
–
✓
–
–
–
✓
–
–
–
✓
–
–
✓ ✓
✓
✓
✓ ✓
✓
✓
✓ ✓
–
✓
✓ ✓
–
✓
✓ ✓
–
–
–
✓ ✓
–
–
✓ ✓
✓
✓
✓ ✓
✓
✓
✓ ✓
✓
✓
✓ ✓
–
✓
✓ ✓
–
✓
✓ ✓
–
–
✓ ✓
–
–
–
✓ ✓
–
–
✓ ✓
✓
✓
✓ ✓
✓
✓
✓ ✓
✓
✓
✓ ✓
–
✓
✓ ✓
–
✓
✓ ✓
–
–
✓ ✓
–
–
–
✓ ✓
–
–
✓ ✓
✓
✓
✓ ✓
✓
✓
✓ ✓
✓
✓
✓ ✓
–
✓
✓ ✓
–
✓
✓ ✓
–
–
✓ ✓
–
–
–
✓ ✓
–
–
✓ ✓
✓
✓
✓ ✓
✓
✓
✓ ✓
✓
✓
✓ ✓
–
✓
✓ ✓
–
✓
✓ ✓
–
–
✓ ✓
AP-A-21
–
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