HD6473887 Datasheet, PDF (447/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

SDRU—Serial data register U
H'A2
SCI1
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
SDRU7 SDRU6 SDRU5 SDRU4 SDRU3 SDRU2 SDRU1 SDRU0
Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined
R/W
R/W R/W
R/W R/W R/W
R/W R/W
Used for transmit data setting and receive data storage
8-bit transfer mode: Not used
16-bit transfer mode: Upper 8 bits of data register
SDRL—Serial data register L
H'A3
SCI1
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
SDRL7 SDRL6 SDRL5 SDRL4 SDRL3 SDRL2 SDRL1 SDRL0
Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined
R/W
R/W
R/W
R/W R/W
R/W
R/W
R/W
Used for transmit data setting and receive data storage
8-bit transfer mode: Data register
16-bit transfer mode: Lower 8 bits of data register
430