HD6475328-CP10 Datasheet, PDF (86/459 Pages) Hitachi Semiconductor – original Hitachi CMOS microcomputer unit (MCU)

3.7.5 Pin States during Register Field Access (Addresses H'FF80 to H'FFFF)
ø
A19 to A0
T1 state
T2 state
T3 state
R/W (read access)
R/W (write access)
AS, DS, RD, WR
D 7 to D0
“High”
High-impedance
Figure 3-9 Pin States during Register Field Access
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