HD6473847RHV Datasheet, PDF (222/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Section 8 I/O Ports
Initial
Bit
Bit Name Value R/W Description
7, 6 ⎯
All 1
⎯
Reserved
These bits are always read as 1 and cannot be modified.
5
SPC32 0
R/W P42/TXD32 Pin Function Switch
This bit selects whether pin P42/TXD32 is used as P42 or
as TXD32.
0: P42 I/O pin
1: TXD32 output pin*
Note: * Set the TE bit in SCR3 after setting this bit to 1.
4
⎯
⎯
W
Reserved
The write value should always be 0.
3
SCINV3 0
R/W TXD32 Pin Output Data Inversion Switch
This bit selects whether or not the logic level of the
TXD32 pin output data is inverted.
0: TXD32 output data is not inverted
1: TXD32 output data is inverted
2
SCINV2 0
R/W RXD32 Pin Input Data Inversion Switch
This bit selects whether or not the logic level of the
RXD32 pin input data is inverted.
0: RXD32 input data is not inverted
1: RXD32 input data is inverted
1, 0 ⎯
⎯
W
Reserved
The write value should always be 0.
Note:
When the serial port control register is modified, the data being input or output up to that
point is inverted immediately after the modification, and an invalid data change is input or
output. When modifying the serial port control register, modification must be made in a state
in which data changes are invalidated.
Rev. 7.00 Mar. 08, 2010 Page 190 of 510
REJ09B0024-0700