Rev. 1.0, 09/01, page 145 of 904
8-Bit, 3-State Access Space: Figure 6.11 shows the bus timing for an 8-bit, 3-state access space.
When an 8-bit access space is accessed, the upper half (D15 to D8) of the data bus is used. The
/:5
pin is always fixed high. Wait states can be inserted.
Bus cycle
T
1
T
2
Address bus
ø
D15 to D8
Valid
D7 to D0
Invalid
Read
D15 to D8
Valid
D7 to D0
Write
High
T
3
High impedance
Notes: 1. n = 0 to 7
2. When RDNn = 0
Figure 6.11 Bus Timing for 8-Bit, 3-State Access Space
Содержание H8S/2376 F-ZTAT
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