HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 171

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

8-Bit 3-State Access Space: Figure 6.7 shows the bus timing for an 8-bit 3-state access space.
When an 8-bit access space is accessed, the upper half (D
The LWR pin is fixed high. Wait states can be inserted.
152
Note: n = 0 to 3
Read
Write
Address bus
D
D
D
D
15
15
7
7
ø
HWR
to D
to D
to D
to D
LWR
CSn
Figure 6.7 Bus Timing for 8-Bit 3-State Access Space
RD
AS
8
0
8
0
T
1
High impedance
Bus cycle
High
15
to D
T
2
8
Valid
) of the data bus is used.
T
3
Invalid
Valid