Hitachi H8S/2646 Hardware Manual page 199

Hitachi 16-bit single-chip microcomputer h8s/2646 series
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Address bus
D15 to D8
Read
D7 to D0
Write
D15 to D8
D7 to D0
Figure 7-11 Bus Timing for 16-Bit 3-State Access Space (2) (Odd Address Byte Access)
T
1
AS
RD
HWR
LWR
Bus cycle
T
T
2
High
High impedance
Valid
3
Invalid
Valid
167

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