h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 970

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Appendix B Internal I/O Registers
RDR1—Receive Data Register 1
RDR2—Receive Data Register 2
RDR0—Receive Data Register 0
TDR1—Transmit Data Register 1
TDR2—Transmit Data Register 2
TDR0—Transmit Data Register 0
Rev. 4.00 Jun 06, 2006 page 916 of 1004
REJ09B0301-0400
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
R/W
R
7
0
7
1
R/W
R
6
0
6
1
R/W
R
5
0
5
1
Stores serial transmit data
Stores serial receive data
R/W
R
4
0
4
1
H'FF8D
H'FFA5
H'FFDD
H'FF8B
H'FFA3
H'FFDB
R/W
R
3
0
3
1
R/W
R
2
0
2
1
R/W
R
1
0
1
1
R/W
R
0
0
0
1
SCI1
SCI2
SCI0
SCI1
SCI2
SCI0