HD6433045 HITACHI [Hitachi Semiconductor], HD6433045 Datasheet - Page 140

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HD6433045

Manufacturer Part Number
HD6433045
Description
Hitachi Single-Chip Microcomputer
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet

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8-Bit, Two-State-Access Areas: Figure 6-5 shows the timing of bus control signals for an 8-bit,
two-state-access area. The upper address bus (D
pin is always high. Wait states cannot be inserted.
Note: n = 7 to 0
Read
access
Write
access
Figure 6-5 Bus Control Signal Timing for 8-Bit, Two-State-Access Area
ø
Address bus
CS
AS
RD
D
D to D
HWR
LWR
D
D to D
15
15
7
7
n
to D
to D
0
0
8
8
High
External address in area n
T
126
1
15
to D
Bus cycle
8
Undetermined data
) is used to access these areas. The LWR
Valid
Invalid
Valid
T
2

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