HD643303x Hitachi, HD643303x Datasheet - Page 124

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

6.3.2 Bus Control Signal Timing
8-Bit, Three-State-Access Areas: Figure 6-3 shows the timing of bus control signals for an 8-bit,
three-state-access area. Wait states can be inserted.
Write
access
Read
access
Figure 6-3 Bus Control Signal Timing for 8-Bit, Three-State-Access Area
ø
Address bus
AS
RD
D
WR
D
7
7
to D
to D
0
0
T
1
109
External address
Bus cycle
T
2
Valid
Valid
T
3