h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 1013

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

STR1—Status Register 1
STR2—Status Register 2
DADR0—D/A Data Register 0
DADR1—D/A Data Register 1
Bit
Initial value
Slave R/W
Host R/W
Bit
Initial value
Read/Write
DBU
R/W
R/W
R
7
0
7
0
User-defined bits
DBU
R/W
R/W
R
6
0
6
0
DBU
R/W
R/W
R
5
0
Command/data
5
0
Stores data for D/A conversion
0
1
Contents of input data register (IDR) are data
Contents of input data register (IDR) are a command
DBU
R/W
R/W
R
4
0
4
0
Input data register full
0
1
Rev. 4.00 Jun 06, 2006 page 959 of 1004
H'FFF6
H'FFFE
H'FFF8
H'FFF9
C/D
[Clearing condition]
When the slave processor reads IDR
[Setting condition]
When the host processor writes to IDR
R/W
R
R
3
0
3
0
Appendix B Internal I/O Registers
Output data register full
0
1
DBU
R/W
R/W
R
2
0
2
0
[Clearing condition]
When the host processor
reads ODR or the slave
writes 0 in the OBF bit
[Setting condition]
When the slave processor
writes to ODR
IBF
R/W
R
R
1
0
REJ09B0301-0400
1
0
D/A Converter
D/A Converter
R/(W)
OBF
R/W
R
0
0
0
0
HIF
HIF