APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
AP-A-24
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
0294
P9RCTL
(P9 Port Pull-up/down
Control Register)
15–14 –
0x0
–
R
–
– – – –
13 P9PDPU5
0
H0
R/W –
✓
✓
✓
✓
12 P9PDPU4
0
H0
R/W
✓
✓
✓
✓
11 P9PDPU3
0
H0
R/W
✓
✓
✓
✓
10 P9PDPU2
0
H0
R/W
✓
✓
✓
✓
9
P9PDPU1
0
H0
R/W
✓
✓
✓
✓
8
P9PDPU0
0
H0
R/W
✓
✓
✓
✓
7–6 –
0x0
–
R
–
– – – –
5
P9REN5
0
H0
R/W –
✓
✓
✓
✓
4
P9REN4
0
H0
R/W
✓
✓
✓
✓
3
P9REN3
0
H0
R/W
✓
✓
✓
✓
2
P9REN2
0
H0
R/W
✓
✓
✓
✓
1
P9REN1
0
H0
R/W
✓
✓
✓
✓
0
P9REN0
0
H0
R/W
✓
✓
✓
✓
0x0020
0296
P9INTF
(P9 Port Interrupt
Flag Register)
15–8 –
0x00
–
R
–
– – – –
7–6 –
0x0
–
R
– – – –
5
P9IF5
0
H0
R/W Cleared by
writing 1.
✓
✓
✓
✓
4
P9IF4
0
H0
R/W
✓
✓
✓
✓
3
P9IF3
0
H0
R/W
✓
✓
✓
✓
2
P9IF2
0
H0
R/W
✓
✓
✓
✓
1
P9IF1
0
H0
R/W
✓
✓
✓
✓
0
P9IF0
0
H0
R/W
✓
✓
✓
✓
0x0020
0298
P9INTCTL
(P9 Port Interrupt
Control Register)
15–14 –
0x0
–
R
–
– – – –
13 P9EDGE5
0
H0
R/W –
✓
✓
✓
✓
12 P9EDGE4
0
H0
R/W
✓
✓
✓
✓
11 P9EDGE3
0
H0
R/W
✓
✓
✓
✓
10 P9EDGE2
0
H0
R/W
✓
✓
✓
✓
9
P9EDGE1
0
H0
R/W
✓
✓
✓
✓
8
P9EDGE0
0
H0
R/W
✓
✓
✓
✓
7–6 –
0x0
–
R
–
– – – –
5
P9IE5
0
H0
R/W –
✓
✓
✓
✓
4
P9IE4
0
H0
R/W
✓
✓
✓
✓
3
P9IE3
0
H0
R/W
✓
✓
✓
✓
2
P9IE2
0
H0
R/W
✓
✓
✓
✓
1
P9IE1
0
H0
R/W
✓
✓
✓
✓
0
P9IE0
0
H0
R/W
✓
✓
✓
✓
0x0020
029a
P9CHATEN
(P9 Port Chattering
Filter Enable Register)
15–8 –
0x00
–
R
–
– – – –
7–6 –
0x0
–
R
– – – –
5
P9CHATEN5
0
H0
R/W –
✓
✓
✓
✓
4
P9CHATEN4
0
H0
R/W
✓
✓
✓
✓
3
P9CHATEN3
0
H0
R/W
✓
✓
✓
✓
2
P9CHATEN2
0
H0
R/W
✓
✓
✓
✓
1
P9CHATEN1
0
H0
R/W
✓
✓
✓
✓
0
P9CHATEN0
0
H0
R/W
✓
✓
✓
✓
0x0020
029c
P9MODSEL
(P9 Port Mode Select
Register)
15–8 –
0x00
–
R
–
– – – –
7–6 –
0x0
–
R
– – – –
5
P9SEL5
0
H0
R/W –
✓
✓
✓
✓
4
P9SEL4
0
H0
R/W
✓
✓
✓
✓
3
P9SEL3
0
H0
R/W
✓
✓
✓
✓
2
P9SEL2
0
H0
R/W
✓
✓
✓
✓
1
P9SEL1
0
H0
R/W
✓
✓
✓
✓
0
P9SEL0
0
H0
R/W
✓
✓
✓
✓