
7-22
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
7.7.9.
P8 Port Group
The P8 port group supports the GPIO and interrupt functions.
Table 7.7.9.1 Control Registers for P8 Port Group
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
PPORTP8DAT
(P8 Port Data
Register)
15
–
8
P8OUT[7:0]
0x00
H0
R/W
–
7
–
0
P8IN[7:0]
0x00
H0
R
PPORTP8IOEN
(P8 Port Enable
Register)
15
–
8
P8IEN[7:0]
0x00
H0
R/W
–
7
–
0
P8OEN[7:0]
0x00
H0
R/W
PPORTP8RCTL
(P8 Port Pull-
up/down Control
Register)
15
–
8
P8PDPU[7:0]
0x00
H0
R/W
–
7
–
0
P8REN[7:0]
0x00
H0
R/W
PPORTP8INTF
(P8 Port Interrupt
Flag Register)
15
–
8
–
0x00
–
R
–
7
–
0
P8IF[7:0]
0x00
H0
R/W
Cleared by writing 1.
PPORTP8INTCTL
(P8 Port Interrupt
Control Register)
15
–
8
P8EDGE[7:0]
0x00
H0
R/W
–
7
–
0
P8IE[7:0]
0x00
H0
R/W
PPORTP8CHATEN
(P8 Port Chattering
Filter Enable
Register)
15
–
8
–
0x00
–
R
–
7
–
0
P8CHATEN[7:0]
0x00
H0
R/W
PPORTP8MODSEL
(P8 Port Mode
Select Register)
15
–
8
–
0x00
–
R
–
7
–
0
P8SEL[7:0]
0x00
H0
R/W
PPORTP8FNCSEL
(P8 Port Function
Select Register)
15
–
14
P87MUX[1:0]
0x0
H0
R/W
–
13
–
12
P86MUX[1:0]
0x0
H0
R/W
11
–
10
P85MUX[1:0]
0x0
H0
R/W
9
–
8
P84MUX[1:0]
0x0
H0
R/W
7
–
6
P83MUX[1:0]
0x0
H0
R/W
5
–
4
P82MUX[1:0]
0x0
H0
R/W
3
–
2
P81MUX[1:0]
0x0
H0
R/W
1
–
0
P80MUX[1:0]
0x0
H0
R/W
Table 7.7.9.2 P8 Port Group Function Assignment
Port
name
P6SEL
y
= 0
P8SEL
y
= 1
GPIO
P8
y
MUX = 0x0
(Function 0)
P8
y
MUX = 0x1
(Function 1)
P8
y
MUX = 0x2
(Function 2)
P8
y
MUX = 0x3
(Function 3)
Peripheral
Pin
Peripheral
Pin
Peripheral
Pin
Peripheral
Pin
P80
P80
–
–
–
–
–
–
–
–
P81
P81
–
–
–
–
–
–
–
–
P82
P82
–
–
–
–
–
–
–
–
P83
P83
CLG
EXOSC
–
–
–
–
–
–
P84
P84
T16B Ch.0 EXCL00
–
–
–
–
–
–
P85
P85
T16B Ch.0
EXCL01
–
–
–
–
–
–
P86
P86
–
–
–
–
–
–
–
–
P87
P87
–
–
–
–
–
–
–
–
Содержание S1C31D50
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