
APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
S1C31D50/D51 TECHNICAL MANUAL
Seiko Epson Corporation
AP-A-19
(Rev. 2.00)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
48
pin
64
pin
80
pin
100
pin
0x0020
026c
P6MODSEL
(P6 Port Mode Select
Register)
15–8 –
0x00
–
R
–
– – – –
7
P6SEL7
0
H0
R/W –
– – –
✓
6
P6SEL6
0
H0
R/W
– – –
✓
5
P6SEL5
0
H0
R/W
– – –
✓
4
P6SEL4
0
H0
R/W
– –
✓
✓
3
P6SEL3
0
H0
R/W
– –
✓
✓
2
P6SEL2
0
H0
R/W
✓
✓
✓
✓
1
P6SEL1
0
H0
R/W
✓
✓
✓
✓
0
P6SEL0
0
H0
R/W
– – –
✓
0x0020
026e
P6FNCSEL
(P6 Port Function
Select Register)
15–14 P67MUX[1:0]
0x0
H0
R/W –
– – –
✓
13–12 P66MUX[1:0]
0x0
H0
R/W
– – –
✓
11–10 P65MUX[1:0]
0x0
H0
R/W
– – –
✓
9–8 P64MUX[1:0]
0x0
H0
R/W
– –
✓
✓
7–6 P63MUX[1:0]
0x0
H0
R/W
– –
✓
✓
5–4 P62MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
3–2 P61MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
1–0 P60MUX[1:0]
0x0
H0
R/W
– – –
✓
0x0020
0270
P7DAT
(P7 Port Data
Register)
15 P7OUT7
0
H0
R/W –
– – –
✓
14 P7OUT6
0
H0
R/W
– – –
✓
13 P7OUT5
0
H0
R/W
– – –
✓
12 P7OUT4
0
H0
R/W
– –
✓
✓
11 P7OUT3
0
H0
R/W
✓
✓
✓
✓
10 P7OUT2
0
H0
R/W
✓
✓
✓
✓
9
P7OUT1
0
H0
R/W
–
✓
✓
✓
8
P7OUT0
0
H0
R/W
–
✓
✓
✓
7
P7IN7
0
H0
R
–
– – –
✓
6
P7IN6
0
H0
R
– – –
✓
5
P7IN5
0
H0
R
– – –
✓
4
P7IN4
0
H0
R
– –
✓
✓
3
P7IN3
0
H0
R
✓
✓
✓
✓
2
P7IN2
0
H0
R
✓
✓
✓
✓
1
P7IN1
0
H0
R
–
✓
✓
✓
0
P7IN0
0
H0
R
–
✓
✓
✓
0x0020
0272
P7IOEN
(P7 Port Enable
Register)
15 P7IEN7
0
H0
R/W –
– – –
✓
14 P7IEN6
0
H0
R/W
– – –
✓
13 P7IEN5
0
H0
R/W
– – –
✓
12 P7IEN4
0
H0
R/W
– –
✓
✓
11 P7IEN3
0
H0
R/W
✓
✓
✓
✓
10 P7IEN2
0
H0
R/W
✓
✓
✓
✓
9
P7IEN1
0
H0
R/W
–
✓
✓
✓
8
P7IEN0
0
H0
R/W
–
✓
✓
✓
7
P7OEN7
0
H0
R/W –
– – –
✓
6
P7OEN6
0
H0
R/W
– – –
✓
5
P7OEN5
0
H0
R/W
– – –
✓
4
P7OEN4
0
H0
R/W
– –
✓
✓
3
P7OEN3
0
H0
R/W
✓
✓
✓
✓
2
P7OEN2
0
H0
R/W
✓
✓
✓
✓
1
P7OEN1
0
H0
R/W
–
✓
✓
✓
0
P7OEN0
0
H0
R/W
–
✓
✓
✓