Epson S1C31D50 Technical Instructions page 109

7.7.9. P8 Port Group
The P8 port group supports the GPIO and interrupt functions.
Register name Bit
PPORTP8DAT 15–8
(P8 Port Data
7–0
Register)
PPORTP8IOEN 15–8
(P8 Port Enable
7–0
Register)
PPORTP8RCTL 15–8
(P8 Port Pull- 7–0
up/down Control
Register)
PPORTP8INTF 15–8
(P8 Port Interrupt
7–0
Flag Register)
PPORTP8INTCTL 15–8
(P8 Port Interrupt 7–0
Control Register)
PPORTP8CHATEN 15–8
(P8 Port Chattering 7–0
Filter Enable
Register)
PPORTP8MODSEL 15–8
(P8 Port Mode 7–0
Select Register)
PPORTP8FNCSEL 15–14
(P8 Port Function 13–12
Select Register)
11–10
9–8
7–6
5–4
3–2
1–0
P6SELy = 0
Port P8yMUX = 0x0
name
GPIO
Peripheral
P80 P80
P81 P81
P82 P82
P83 P83 CLG
P84 P84 T16B Ch.0
P85 P85 T16B Ch.0
P86 P86
P87 P87
7-22
Table 7.7.9.1 Control Registers for P8 Port Group
Bit name Initial
P8OUT[7:0] 0x00
P8IN[7:0] 0x00
P8IEN[7:0] 0x00
P8OEN[7:0] 0x00
P8PDPU[7:0] 0x00
P8REN[7:0] 0x00
– 0x00
P8IF[7:0] 0x00
P8EDGE[7:0] 0x00
P8IE[7:0] 0x00
– 0x00
P8CHATEN[7:0] 0x00
– 0x00
P8SEL[7:0] 0x00
P87MUX[1:0] 0x0
P86MUX[1:0] 0x0
P85MUX[1:0] 0x0
P84MUX[1:0] 0x0
P83MUX[1:0] 0x0
P82MUX[1:0] 0x0
P81MUX[1:0] 0x0
P80MUX[1:0] 0x0
Table 7.7.9.2 P8 Port Group Function Assignment
P8yMUX = 0x1
(Function 0) (Function 1)
Pin Peripheral
– – –
– – –
– – –
EXOSC –
EXCL00 –
EXCL01 –
– – –
– – –
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
– – –
– – –
– – –
– – –
– – –
– – –
– – –
– – –
Remarks
–
–
–
–
–
–
–
–
P8yMUX = 0x3
(Function 3)
Peripheral Pin
– –
– –
– –
– –
– –
– –
– –
– –
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)