HD6433935 Hitachi, HD6433935 Datasheet - Page 188

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

8.13
8.13.1
With input pins RXD
inverted form.
8.13.2
Table 8.33 shows the registers used by the input/output data inversion function.
Table 8.33 Register Configuration
Name
Serial port control register
Serial Port Control Register (SPCR)
SPCR is an 8-bit readable/writable register that performs RXD
input/output data inversion switching. SPCR is initialized to H'C0 by a reset.
176
Bit
Initial value
Read/Write
Input/Output Data Inversion Function
Overview
Register Configuration and Descriptions
—
—
7
1
31
Figure 8.12 Input/Output Data Inversion Function
, and RXD
P3
P4
P3
P4
5
2
4
1
/TXD
/TXD
/RXD
/RXD
—
—
6
1
Abbreviation
SPCR
32
31
32
31
32
, and output pins TXD
SPC32
R/W
5
0
SCINV0
SCINV2
SPC31
R/W
SCINV1
SCINV3
4
0
R/W
R/W
SCINV3
31
R/W
and TXD
3
0
31
Initial Value
H'C0
, RXD
RXD
RXD
TXD
TXD
SCINV2
32
R/W
, the data can be handled in
31
32
2
0
32
31
32
, TXD
SCINV1
31
R/W
, and TXD
1
0
Address
H'FF91
SCINV0
R/W
0
0
32
pin