HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 795

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

ABWCR—Bus Width Control Register
ASTCR—Access State Control Register
786
Bit
Modes 1 to 3, 5 to 7
Initial value
R/W
Mode 4
Initial value
Read/Write
Bit
Initial value
Read/Write
:
:
:
:
:
:
:
:
ABW7
AST7
R/W
R/W
R/W
7
1
7
1
0
Area 7 to 0 Access State Control
ABW6
AST6
R/W
R/W
R/W
0
1
6
1
6
1
0
Area n is designated for 2-state access
Wait state insertion in area n external space is disabled
Area n is designated for 3-state access
Wait state insertion in area n external space is enabled
ABW5
AST5
R/W
R/W
R/W
5
1
5
1
0
ABW4
AST4
Area 7 to 0 Bus Width Control
R/W
R/W
R/W
4
1
0
1
4
1
0
H'FED0
H'FED1
Area n is designated for 16-bit access
Area n is designated for 8-bit access
ABW3
AST3
R/W
R/W
R/W
3
1
3
1
0
ABW2
AST2
R/W
R/W
R/W
2
1
2
1
0
ABW1
AST1
R/W
R/W
R/W
1
1
1
1
0
Bus Controller
Bus Controller
(n = 7 to 0)
(n = 7 to 0)
ABW0
AST0
R/W
R/W
R/W
0
1
0
1
0