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9 i/O PORTS (P)
P1[7:4] Port Function Select Register (P14_17PMuX)
Register name address
Bit
P1[7:4] Port
0x52a3
D7–6 P17MuX[1:0] P17 port function select
Function Select
(8 bits)
Register
(P14_17PMuX)
D5–4 P16MuX[1:0] P16 port function select
D3–2 P15MuX[1:0] P15 port function select
D1–0 P14MuX[1:0] P14 port function select
The P14 to P17 port pins are shared with the peripheral module pins. This register is used to select how the pins are
used.
D[7:6]
P17MuX[1:0]: P17 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): Reserved
0x1 (R/W): AIN3 (ADC10)
0x0 (R/W): P17 (default)
D[5:4]
P16MuX[1:0]: P16 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): AIN4 (ADC10)
0x1 (R/W): SCLK1 (UART Ch.1)
0x0 (R/W): P16 (default)
D[3:2]
P15MuX[1:0]: P15 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): AIN5 (ADC10)
0x1 (R/W): Reserved
0x0 (R/W): P15/EXCL3 (T16E Ch.0) (default)
To use the P15 pin for EXCL3 input, P1OEN5/P1_OEN register must be set to 0 and P1IEN5/P1_IEN
register must be set to 1.
D[1:0]
P14MuX[1:0]: P14 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): AIN6 (ADC10)
0x1 (R/W): Reserved
0x0 (R/W): P14/EXCL2 (T16 Ch.2) (default)
To use the P14 pin for EXCL2 input, P1OEN4/P1_OEN register must be set to 0 and P1IEN4/P1_IEN
register must be set to 1.
9-16
name
Function
Seiko epson Corporation
Setting
init. R/W
P17MUX[1:0]
Function
0x0 R/W
0x3
reserved
0x2
reserved
0x1
AIN3
0x0
P17
P16MUX[1:0]
Function
0x0 R/W
0x3
reserved
0x2
AIN4
0x1
SCLK1
0x0
P16
P15MUX[1:0]
Function
0x0 R/W
0x3
reserved
0x2
AIN5
0x1
reserved
0x0
P15/EXCL3
P14MUX[1:0]
Function
0x0 R/W
0x3
reserved
0x2
AIN6
0x1
reserved
0x0
P14/EXCL2
S1C17624/604/622/602/621 TeChniCal Manual
Remarks
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