HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 288

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Table 9-17 Port 9 Pin Functions (cont)
Pin
P9
P9
1
0
/TxD
/TxD
1
0
Pin Functions and Selection Method
Bit TE in SCR of SCI1 and bit P9
Bit TE in SCR of SCI0, bit SMIF in SCMR, and bit P9
function as follows
TE
P9
Pin function
SMIF
TE
P9
Pin function
Note: * Functions as the TxD
1
0
DDR
DDR
which the pin is driven, and another in which the pin is at high-
impedance.
P9
P9
1
0
0
0
input
input
275
0
0
0
output pin, but there are two states: one in
1
DDR select the pin function as follows
P9
P9
1
0
output
output
1
0
1
TxD
0
0
DDR select the pin
—
1
output
TxD
1
—
1
output
TxD
0
—
—
output*
1