Hitachi H8S/2646 Hardware Manual page 106

Hitachi 16-bit single-chip microcomputer h8s/2646 series
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Address bus
AS
RD
HWR, LWR
Data bus
Figure 2-20 Pin States during On-Chip Supporting Module Access
74
Bus cycle
T1
Held
High
High
High
High-impedance state
T2

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