HD6413008VF25 Datasheet, PDF (206/688 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

7. I/O Ports
Pin
P9 /TxD
1
1
P9₀/TxD₀
Pin Functions and Selection Method
Bit TE in SCR of SCI1, bit SMIF in SCMR, and bit P9 DDR select the pin
1
function as follows.
SMIF
0
1
TE
0
1
⎯
P9 DDR
1
0
1
⎯
⎯
Pin function
P9 input
1
P9 output
1
TxD output
1
TxD
1
output*
Note:
*
Functions as the TxD output pin, but there are two states:
1
one in which the pin is driven, and another in which the pin is
at high-impedance.
Bit TE in SCR of SCI0, bit SMIF in SCMR, and bit P9₀DDR select the pin
function as follows.
SMIF
0
1
TE
0
1
⎯
P9₀DDR
0
1
⎯
⎯
Pin function
P9₀ input P9₀ output TxD₀ output TxD₀ output*
Note: * Functions as the TxD₀ output pin, but there are two states:
one in which the pin is driven, and another in which the pin is
at high-impedance.
Rev.4.00 Aug. 20, 2007 Page 160 of 638
REJ09B0395-0400