h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 181

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Table 7.3
7.3.3
The H8S/2646 Group memory interfaces comprise a basic bus interface that allows direct
connection or ROM, SRAM, and so on, and a burst ROM interface that allows direct connection
of burst ROM. The memory interface can be selected independently for each area.
An area for which the basic bus interface is designated functions as normal space, and an area for
which the burst ROM interface is designated functions as burst ROM space.
ABWCR
ABWn
0
1
Memory Interfaces
ASTCR
ASTn
0
1
0
1
Bus Specifications for Each Area (Basic Bus Interface)
Wn1
—
0
1
—
0
1
WCRH, WCRL
Wn0
—
0
1
0
1
—
0
1
0
1
Bus Width
16
8
Bus Specifications (Basic Bus Interface)
Rev. 5.00 Sep 22, 2005 page 155 of 1136
Access States
2
3
2
3
Section 7 Bus Controller
REJ09B0257-0500
Program Wait
States
0
0
1
2
3
0
0
1
2
3