HD64F3039F18 Datasheet, PDF (195/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 7 I/O Ports
Pin
P9₃/RxD₁
Pin Functions and Selection Method
Bit RE in SCR of SCI1 and bit P9₃DDR select the pin function as follows
RE
0
1
P9₃DDR
Pin function
0
P9₃ input
1
P9₃ output
—
RxD₁ input
P9₂/RxD₀
Bit RE in SCR of SCI₀, bit SMIF in SCMR, and bit P9₂DDR select the pin function as
follows
SMIF
0
1
RE
0
1
—
P9₂DDR
Pin function
0
P9₂ input
1
P9₂ output
—
RxD₀ input
—
RxD₀ input
P9₁/TxD₁
Bit TE in SCR of SCI1 and bit P91DDR select the pin function as follows
TE
0
1
P9₁DDR
Pin function
0
P9₁ input
1
P9₁ output
—
TxD₁ output
P9₀/TxD₀
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 P9 input P9 output
0
0
TxD output
0
TxD
0
output*
Note:
*
Functions as the TxD output pin, but there are two states: one in which
0
the pin is driven, and another in which the pin is at high impedance.
Rev.3.00 Mar. 26, 2007 Page 171 of 682
REJ09B0353-0300