Epson S1C17M20 Technical Manual page 86

6 I/O PORTS (PPORT)
Register name Bit
P4RCTL 15–11 –
(P4 Port Pull-up/down
10
Control Register)
9
8
7–3 –
2
1
0
P4INTF 15–8 –
(P4 Port Interrupt
7–3 –
Flag Register)
2
1
0
P4INTCTL 15–11 –
(P4 Port Interrupt
10
Control Register)
9
8
7–3 –
2
1
0
P4CHATEN 15–8 –
(P4 Port Chattering
7–3 –
Filter Enable Register)
2
1
0
P4MODSEL 15–8 –
(P4 Port Mode Select
7–3 –
Register)
2
1
0
P4FNCSEL 15–8 –
(P4 Port Function
7–6 –
Select Register)
5–4 P42MUX[1:0]
3–2 P41MUX[1:0]
1–0 P40MUX[1:0]
P4SELy = 0
Port P4yMUX = 0x0
name (Function 0)
GPIO
Peripheral
P40 P40 RFC Ch.1
P41 P41 RFC Ch.1
P42 P42 RFC Ch.1
6-22
Bit name Initial
0x00
P4PDPU2 0
P4PDPU1 0
P4PDPU0 0
0x00
P4REN2 0
P4REN1 0
P4REN0 0
0x00
0x00
P4IF2 0
P4IF1 0
P4IF0 0
0x00
P4EDGE2 0
P4EDGE1 0
P4EDGE0 0
0x00
P4IE2 0
P4IE1 0
P4IE0 0
0x00
0x00
P4CHATEN2 0
P4CHATEN1 0
P4CHATEN0 0
0x00
0x00
P4SEL2 0
P4SEL1 0
P4SEL0 0
0x00
0x0
0x0
0x0
0x0
Table 6.7.5.2 P4 Port Group Function Assignment
P4yMUX = 0x1
(Function 1)
Pin Peripheral Pin
SENA1 –
REF1 –
RFIN1 –
Seiko Epson Corporation
Reset R/W
– R –
–
H0 R/W
H0 R/W
H0 R/W
– R –
H0 R/W –
H0 R/W
H0 R/W
– R –
– R
H0 R/W Cleared by writing
1.
H0 R/W
H0 R/W
– R –
H0 R/W –
H0 R/W
H0 R/W
– R –
H0 R/W –
H0 R/W
H0 R/W
– R –
– R
H0 R/W –
H0 R/W
H0 R/W
– R –
– R
H0 R/W –
H0 R/W
H0 R/W
– R –
– R
H0 R/W –
H0 R/W
H0 R/W
P4SELy = 1
P4yMUX = 0x2
(Function 2)
Peripheral Pin Peripheral
– – –
– – –
– – –
M20/M23 M21/
Remarks
24pin 32pin
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
P4yMUX = 0x3
M20/M23 M21/
(Function 3)
Pin
24pin 32pin
– – – –
– – – –
– – – –
S1C17M20/M21/M22/M23/M24/M25
TECHNICAL MANUAL (Rev. 1.0)
M22/
M24 M25
– –
–
✓
–
✓
–
✓
– –
–
✓
–
✓
–
✓
– –
– –
–
✓
–
✓
–
✓
– –
–
✓
–
✓
–
✓
– –
–
✓
–
✓
–
✓
– –
– –
–
✓
–
✓
–
✓
– –
– –
–
✓
–
✓
–
✓
– –
– –
–
✓
–
✓
–
✓
M22/
M24 M25
–
✓
–
✓
–
✓