HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 557

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

• P30/TxD0/IrTxD
TE
P30DDR
Pin function
Note:
10.4
Port 4 is an 8-bit input-only port. Port 4 has the following register.
• Port 4 register (PORT4)
10.4.1
PORT4 is an 8-bit read-only register that shows port 4 pin states.
PORT4 cannot be modified.
Bit
0
Note:
7
6
5
4
3
2
1
The pin function is switched as shown below according to the combination of bit TE in SCR of
SCI_0 and bit P30DDR.
Bit Name
P47
P46
P45
P44
P43
P42
P41
P40
* NMOS open-drain output when P30ODR = 1.
* Determined by the states of pins P47 to P40.
Port 4
Port 4 Register (PORT4)
Initial Value
⎯*
⎯*
⎯*
⎯*
⎯*
⎯*
⎯*
⎯*
P30 input
0
R/W
R
R
R
R
R
R
R
R
0
Description
The pin states are always read from this register.
P30 output *
Rev.7.00 Mar. 18, 2009 page 489 of 1136
1
Section 10 I/O Ports
RxD0/IrRxD
REJ09B0109-0700
output *
⎯
1