APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
AP-A-8
Seiko Epson Corporation
S1C17M20/M21/M22/M23/M24/M25
TECHNICAL MANUAL (Rev. 1.0)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
M20/M23 M21/
M24
M22/
M25
24pin 32pin
0x4206 P0INTF
(P0 Port Interrupt
Flag Register)
15–8 –
0x00
–
R
–
–
–
–
–
7
P0IF7
0
H0
R/W Cleared
by writing
1.
–
–
–
✓
6
P0IF6
0
H0
R/W
–
–
–
✓
5
P0IF5
0
H0
R/W
–
–
–
✓
4
P0IF4
0
H0
R/W
–
–
–
✓
3
P0IF3
0
H0
R/W
✓
✓
✓
✓
2
P0IF2
0
H0
R/W
✓
✓
✓
✓
1
P0IF1
0
H0
R/W
✓
✓
✓
✓
0
P0IF0
0
H0
R/W
✓
✓
✓
✓
0x4208 P0INTCTL
(P0 Port Interrupt
Control Register)
15 P0EDGE7
0
H0
R/W –
–
–
–
✓
14 P0EDGE6
0
H0
R/W
–
–
–
✓
13 P0EDGE5
0
H0
R/W
–
–
–
✓
12 P0EDGE4
0
H0
R/W
–
–
–
✓
11 P0EDGE3
0
H0
R/W
✓
✓
✓
✓
10 P0EDGE2
0
H0
R/W
✓
✓
✓
✓
9
P0EDGE1
0
H0
R/W
✓
✓
✓
✓
8
P0EDGE0
0
H0
R/W
✓
✓
✓
✓
7
P0IE7
0
H0
R/W –
–
–
–
✓
6
P0IE6
0
H0
R/W
–
–
–
✓
5
P0IE5
0
H0
R/W
–
–
–
✓
4
P0IE4
0
H0
R/W
–
–
–
✓
3
P0IE3
0
H0
R/W
✓
✓
✓
✓
2
P0IE2
0
H0
R/W
✓
✓
✓
✓
1
P0IE1
0
H0
R/W
✓
✓
✓
✓
0
P0IE0
0
H0
R/W
✓
✓
✓
✓
0x420a P0CHATEN
(P0 Port Chattering
Filter Enable Register)
15–8 –
0x00
–
R
–
–
–
–
–
7
P0CHATEN7
0
H0
R/W –
–
–
–
✓
6
P0CHATEN6
0
H0
R/W
–
–
–
✓
5
P0CHATEN5
0
H0
R/W
–
–
–
✓
4
P0CHATEN4
0
H0
R/W
–
–
–
✓
3
P0CHATEN3
0
H0
R/W
✓
✓
✓
✓
2
P0CHATEN2
0
H0
R/W
✓
✓
✓
✓
1
P0CHATEN1
0
H0
R/W
✓
✓
✓
✓
0
P0CHATEN0
0
H0
R/W
✓
✓
✓
✓
0x420c P0MODSEL
(P0 Port Mode Select
Register)
15–8 –
0x00
–
R
–
–
–
–
–
7
P0SEL7
0
H0
R/W –
–
–
–
✓
6
P0SEL6
0
H0
R/W
–
–
–
✓
5
P0SEL5
0
H0
R/W
–
–
–
✓
4
P0SEL4
0
H0
R/W
–
–
–
✓
3
P0SEL3
0
H0
R/W
✓
✓
✓
✓
2
P0SEL2
0
H0
R/W
✓
✓
✓
✓
1
P0SEL1
0
H0
R/W
✓
✓
✓
✓
0
P0SEL0
0
H0
R/W
✓
✓
✓
✓
0x420e P0FNCSEL
(P0 Port Function
Select Register)
15–14 P07MUX[1:0]
0x0
H0
R/W –
–
–
–
✓
13–12 P06MUX[1:0]
0x0
H0
R/W
–
–
–
✓
11–10 P05MUX[1:0]
0x0
H0
R/W
–
–
–
✓
9–8 P04MUX[1:0]
0x0
H0
R/W
–
–
–
✓
7–6 P03MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
5–4 P02MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
3–2 P01MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
1–0 P00MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓