APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
S1C31D50/D51 TECHNICAL MANUAL
Seiko Epson Corporation
AP-A-17
(Rev. 2.00)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
48
pin
64
pin
80
pin
100
pin
0x0020
025c
P5MODSEL
(P5 Port Mode Select
Register)
15–8 –
0x00
–
R
–
– – – –
7
P5SEL7
0
H0
R/W –
– – –
✓
6
P5SEL6
0
H0
R/W
– – –
✓
5
P5SEL5
0
H0
R/W
– – –
✓
4
P5SEL4
0
H0
R/W
– – –
✓
3
P5SEL3
0
H0
R/W
– –
✓
✓
2
P5SEL2
0
H0
R/W
– –
✓
✓
1
P5SEL1
1
H0
R/W
✓
✓
✓
✓
0
P5SEL0
1
H0
R/W
✓
✓
✓
✓
0x0020
025e
P5FNCSEL
(P5 Port Function
Select Register)
15–14 P57MUX[1:0]
0x0
H0
R/W –
– – –
✓
13–12 P56MUX[1:0]
0x0
H0
R/W
– – –
✓
11–10 P55MUX[1:0]
0x0
H0
R/W
– – –
✓
9–8 P54MUX[1:0]
0x0
H0
R/W
– – –
✓
7–6 P53MUX[1:0]
0x0
H0
R/W
– –
✓
✓
5–4 P52MUX[1:0]
0x0
H0
R/W
– –
✓
✓
3–2 P51MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
1–0 P50MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
0x0020
0260
P6DAT
(P6 Port Data
Register)
15 P6OUT7
0
H0
R/W –
– – –
✓
14 P6OUT6
0
H0
R/W
– – –
✓
13 P6OUT5
0
H0
R/W
– – –
✓
12 P6OUT4
0
H0
R/W
– –
✓
✓
11 P6OUT3
0
H0
R/W
– –
✓
✓
10 P6OUT2
0
H0
R/W
✓
✓
✓
✓
9
P6OUT1
0
H0
R/W
✓
✓
✓
✓
8
P6OUT0
0
H0
R/W
– – –
✓
7
P6IN7
0
H0
R
–
– – –
✓
6
P6IN6
0
H0
R
– – –
✓
5
P6IN5
0
H0
R
– – –
✓
4
P6IN4
0
H0
R
– –
✓
✓
3
P6IN3
0
H0
R
– –
✓
✓
2
P6IN2
0
H0
R
✓
✓
✓
✓
1
P6IN1
0
H0
R
✓
✓
✓
✓
0
P6IN0
0
H0
R
– – –
✓
0x0020
0262
P6IOEN
(P6 Port Enable
Register)
15 P6IEN7
0
H0
R/W –
– – –
✓
14 P6IEN6
0
H0
R/W
– – –
✓
13 P6IEN5
0
H0
R/W
– – –
✓
12 P6IEN4
0
H0
R/W
– –
✓
✓
11 P6IEN3
0
H0
R/W
– –
✓
✓
10 P6IEN2
0
H0
R/W
✓
✓
✓
✓
9
P6IEN1
0
H0
R/W
✓
✓
✓
✓
8
P6IEN0
0
H0
R/W
– – –
✓
7
P6OEN7
0
H0
R/W –
– – –
✓
6
P6OEN6
0
H0
R/W
– – –
✓
5
P6OEN5
0
H0
R/W
– – –
✓
4
P6OEN4
0
H0
R/W
– –
✓
✓
3
P6OEN3
0
H0
R/W
– –
✓
✓
2
P6OEN2
0
H0
R/W
✓
✓
✓
✓
1
P6OEN1
0
H0
R/W
✓
✓
✓
✓
0
P6OEN0
0
H0
R/W
– – –
✓