
APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
AP-A-20
Seiko Epson Corporation
S1C31D50/D51 TECHNICAL MANUAL
(Rev. 2.00)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
48
pin
64
pin
80
pin
100
pin
0x0020
0274
P7RCTL
(P7 Port Pull-up/down
Control Register)
15 P7PDPU7
0
H0
R/W –
– – –
✓
14 P7PDPU6
0
H0
R/W
– – –
✓
13 P7PDPU5
0
H0
R/W
– – –
✓
12 P7PDPU4
0
H0
R/W
– –
✓
✓
11 P7PDPU3
0
H0
R/W
✓
✓
✓
✓
10 P7PDPU2
0
H0
R/W
✓
✓
✓
✓
9
P7PDPU1
0
H0
R/W
–
✓
✓
✓
8
P7PDPU0
0
H0
R/W
–
✓
✓
✓
7
P7REN7
0
H0
R/W –
– – –
✓
6
P7REN6
0
H0
R/W
– – –
✓
5
P7REN5
0
H0
R/W
– – –
✓
4
P7REN4
0
H0
R/W
– –
✓
✓
3
P7REN3
0
H0
R/W
✓
✓
✓
✓
2
P7REN2
0
H0
R/W
✓
✓
✓
✓
1
P7REN1
0
H0
R/W
–
✓
✓
✓
0
P7REN0
0
H0
R/W
–
✓
✓
✓
0x0020
0276
P7INTF
(P7 Port Interrupt
Flag Register)
15–8 –
0x00
–
R
–
– – – –
7
P7IF7
0
H0
R/W Cleared by
writing 1.
– – –
✓
6
P7IF6
0
H0
R/W
– – –
✓
5
P7IF5
0
H0
R/W
– – –
✓
4
P7IF4
0
H0
R/W
– –
✓
✓
3
P7IF3
0
H0
R/W
✓
✓
✓
✓
2
P7IF2
0
H0
R/W
✓
✓
✓
✓
1
P7IF1
0
H0
R/W
–
✓
✓
✓
0
P7IF0
0
H0
R/W
–
✓
✓
✓
0x0020
0278
P7INTCTL
(P7 Port Interrupt
Control Register)
15 P7EDGE7
0
H0
R/W –
– – –
✓
14 P7EDGE6
0
H0
R/W
– – –
✓
13 P7EDGE5
0
H0
R/W
– – –
✓
12 P7EDGE4
0
H0
R/W
– –
✓
✓
11 P7EDGE3
0
H0
R/W
✓
✓
✓
✓
10 P7EDGE2
0
H0
R/W
✓
✓
✓
✓
9
P7EDGE1
0
H0
R/W
–
✓
✓
✓
8
P7EDGE0
0
H0
R/W
–
✓
✓
✓
7
P7IE7
0
H0
R/W –
– – –
✓
6
P7IE6
0
H0
R/W
– – –
✓
5
P7IE5
0
H0
R/W
– – –
✓
4
P7IE4
0
H0
R/W
– –
✓
✓
3
P7IE3
0
H0
R/W
✓
✓
✓
✓
2
P7IE2
0
H0
R/W
✓
✓
✓
✓
1
P7IE1
0
H0
R/W
–
✓
✓
✓
0
P7IE0
0
H0
R/W
–
✓
✓
✓
0x0020
027a
P7CHATEN
(P7 Port Chattering
Filter Enable Register)
15–8 –
0x00
–
R
–
– – – –
7
P7CHATEN7
0
H0
R/W –
– – –
✓
6
P7CHATEN6
0
H0
R/W
– – –
✓
5
P7CHATEN5
0
H0
R/W
– – –
✓
4
P7CHATEN4
0
H0
R/W
– –
✓
✓
3
P7CHATEN3
0
H0
R/W
✓
✓
✓
✓
2
P7CHATEN2
0
H0
R/W
✓
✓
✓
✓
1
P7CHATEN1
0
H0
R/W
–
✓
✓
✓
0
P7CHATEN0
0
H0
R/W
–
✓
✓
✓