P8 Port Group - Epson S1C17W18 Technical Manual

6.7.9 P8 Port Group

The P8 port group supports the GPIO and interrupt functions.
Register name Bit
P8DAT 15–8 P8OUT[7:0]
(P8 Port Data
7–0 P8IN[7:0]
Register)
P8IOEN 15–8 P8IEN[7:0]
(P8 Port Enable
7–0 P8OEN[7:0]
Register)
P8RCTL 15–8 P8PDPU[7:0]
(P8 Port Pull-up/down
7–0 P8REN[7:0]
Control Register)
P8INTF 15–8 –
(P8 Port Interrupt
7–0 P8IF[7:0]
Flag Register)
P8INTCTL 15–8 P8EDGE[7:0]
(P8 Port Interrupt
7–0 P8IE[7:0]
Control Register)
P8CHATEN 15–8 –
(P8 Port Chattering
Filter Enable
7–0 P8CHATEN[7:0]
Register)
P8MODSEL 15–8 –
(P8 Port Mode Select
7–0 P8SEL[7:0]
Register)
P8FNCSEL 15–14 P87MUX[1:0]
(P8 Port Function
13–12 P86MUX[1:0]
Select Register)
11–10 P85MUX[1:0]
9–8 P84MUX[1:0]
7–6 P83MUX[1:0]
5–4 P82MUX[1:0]
3–2 P81MUX[1:0]
1–0 P80MUX[1:0]
P8SELy = 0
Port
name
GPIO
Peripheral
P80 P80
P81 P81
P82 P82
P83 P83
P84 P84
P85 P85
P86 P86
P87 P87
S1C17W18 TECHNICAL MANUAL
(Rev. 1.2)
Table 6.7.9.1 Control Registers for P8 Port Group
Bit name Initial
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
Table 6.7.9.2 P8 Port Group Function Assignment
P8yMUX = 0x0 P8yMUX = 0x1
(Function 0) (Function 1)
Pin Peripheral
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
Seiko Epson Corporation
Reset R/W
H0 R/W –
H0 R
H0 R/W –
H0 R/W
H0 R/W –
H0 R/W
– R –
H0 R/W Cleared by writing 1.
H0 R/W –
H0 R/W
– R –
H0 R/W
– R –
H0 R/W
H0 R/W –
H0 R/W
H0 R/W
H0 R/W
H0 R/W
H0 R/W
H0 R/W
H0 R/W
P8SELy = 1
P8yMUX = 0x2
(Function 2)
Pin Peripheral Pin
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
6 I/O PORTS (PPORT)
Remarks
P8yMUX = 0x3
(Function 3)
Peripheral Pin
LCD8B COM7/
SEG3
LCD8B COM6/
SEG2
LCD8B COM5/
SEG1
LCD8B COM4/
SEG0
LCD8B COM3
LCD8B COM2
LCD8B COM1
LCD8B COM0
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