162
Pin
Pin Functions and Selection Method
P9
1
/TxD
1
Bit TE in SCR of SCI1 and bit P9
1
DDR select the pin function as follows
TE
0
1
P9
1
DDR
0
1
—
Pi n funct i on
P9
1
input
P9
1
output
TxD
1
output
P9
0
/TxD
0
Bit TE in SCR of SCI0, bit SMIF in SCMR, and bit P9
0
DDR select the pin function as
follows
SMIF
0
1
TE
0
1
—
P9
0
DDR
0
1
—
—
Pi n funct i on
P9
0
input
P9
0
output
TxD
0
output
TxD
0
output
*
Note:
*
Functions as the TxD
0
output pin, but there are two states : one in which the
pin is driven, and another in which the pin is at high impedance.