APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
AP-A-10
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
0x4218 P1INTCTL
(P1 Port Interrupt
Control Register)
15 P1EDGE7
0
H0
R/W –
–
–
–
✓
14 P1EDGE6
0
H0
R/W
–
–
–
✓
13 P1EDGE5
0
H0
R/W
✓
✓
✓
✓
12 P1EDGE4
0
H0
R/W
✓
✓
✓
✓
11 P1EDGE3
0
H0
R/W
✓
✓
✓
✓
10 P1EDGE2
0
H0
R/W
✓
✓
✓
✓
9
P1EDGE1
0
H0
R/W
–
✓
✓
✓
8
P1EDGE0
0
H0
R/W
–
✓
✓
✓
7
P1IE7
0
H0
R/W –
–
–
–
✓
6
P1IE6
0
H0
R/W
–
–
–
✓
5
P1IE5
0
H0
R/W
✓
✓
✓
✓
4
P1IE4
0
H0
R/W
✓
✓
✓
✓
3
P1IE3
0
H0
R/W
✓
✓
✓
✓
2
P1IE2
0
H0
R/W
✓
✓
✓
✓
1
P1IE1
0
H0
R/W
–
✓
✓
✓
0
P1IE0
0
H0
R/W
–
✓
✓
✓
0x421a P1CHATEN
(P1 Port Chattering
Filter Enable Register)
15–8 –
0x00
–
R
–
–
–
–
–
7
P1CHATEN7
0
H0
R/W –
–
–
–
✓
6
P1CHATEN6
0
H0
R/W
–
–
–
✓
5
P1CHATEN5
0
H0
R/W
✓
✓
✓
✓
4
P1CHATEN4
0
H0
R/W
✓
✓
✓
✓
3
P1CHATEN3
0
H0
R/W
✓
✓
✓
✓
2
P1CHATEN2
0
H0
R/W
✓
✓
✓
✓
1
P1CHATEN1
0
H0
R/W
–
✓
✓
✓
0
P1CHATEN0
0
H0
R/W
–
✓
✓
✓
0x421c P1MODSEL
(P1 Port Mode Select
Register)
15–8 –
0x00
–
R
–
–
–
–
–
7
P1SEL7
0
H0
R/W –
–
–
–
✓
6
P1SEL6
0
H0
R/W
–
–
–
✓
5
P1SEL5
0
H0
R/W
✓
✓
✓
✓
4
P1SEL4
0
H0
R/W
✓
✓
✓
✓
3
P1SEL3
0
H0
R/W
✓
✓
✓
✓
2
P1SEL2
0
H0
R/W
✓
✓
✓
✓
1
P1SEL1
0
H0
R/W
–
✓
✓
✓
0
P1SEL0
0
H0
R/W
–
✓
✓
✓
0x421e P1FNCSEL
(P1 Port Function
Select Register)
15–14 P17MUX[1:0]
0x0
H0
R/W –
–
–
–
✓
13–12 P16MUX[1:0]
0x0
H0
R/W
–
–
–
✓
11–10 P15MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
9–8 P14MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
7–6 P13MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
5–4 P12MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
3–2 P11MUX[1:0]
0x0
H0
R/W
–
✓
✓
✓
1–0 P10MUX[1:0]
0x0
H0
R/W
–
✓
✓
✓