HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 408

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9 I/O Ports
Pin
P3
P3
P3
P3
Rev.6.00 Sep. 27, 2007 Page 378 of 1268
REJ09B0220-0600
3
2
1
0
/RxD
/RxD
/TxD
/TxD
1
0
1
0
Selection Method and Pin Functions
The pin function is switched as shown below according to the combination of
bit RE in the SCI1 SCR, and bit P33DDR.
Note: * When P33ODR = 1, the pin becomes an NMOS open-drain output.
The pin function is switched as shown below according to the combination of
bit RE in the SCI0 SCR, and bit P32DDR.
Note: * When P32ODR = 1, the pin becomes an NMOS open-drain output.
The pin function is switched as shown below according to the combination of
bit TE in the SCI1 SCR, and bit P31DDR.
Note: * When P31ODR = 1, the pin becomes an NMOS open-drain output.
The pin function is switched as shown below according to the combination of
bit TE in the SCI0 SCR, and bit P30DDR.
Note: * When P30ODR = 1, the pin becomes an NMOS open-drain output.
RE
P33DDR
Pin function
RE
P32DDR
Pin function
TE
P31DDR
Pin function
TE
P30DDR
Pin function
P3
P3
P3
P3
3
2
1
0
input pin
input pin
input pin
input pin
0
0
0
0
0
0
0
0
P3
P3
P3
P3
3
2
1
0
output pin *
output pin *
output pin *
output pin *
1
1
1
1
TxD
TxD
RxD
RxD
1
0
1
0
output pin
output pin
input pin
input pin
—
—
—
—
1
1
1
1