HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 189

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Table 6.3 shows the bus specifications for each basic bus interface area.
Table 6.3
6.3.3
The H8S/2245 Group memory interfaces comprise a basic bus interface that allows direct
connection of ROM, SRAM, and so on; and a burst ROM interface that allows direct connection
of burst ROM.
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)
WCRH
—
0
1
—
0
1
Wn1
WCRL
Wn0
—
0
1
0
1
—
0
1
0
1
Bus Specifications (Basic Bus Interface)
Bus Width
16
8
Rev.3.00 Mar. 26, 2007 Page 147 of 772
2
3
2
3
Access States
Section 6 Bus Controller
REJ09B0355-0300
Program Wait
States
0
0
1
2
3
0
0
1
2
3