Figure 2-18 Pin States during Access to On-Chip Supporting Modules
2.9.4 Access to External Address Space
The external address space is divided into eight areas (areas 0 to 7). Bus-controller settings
determine whether each area is accessed via an 8-bit or 16-bit bus, and whether it is accessed in
two or three states. For details see section 6, Bus Controller.
T
, , ,
AS
ø
1
T
2
Address bus
D to D
15
0
RD HWR LWR
High
High impedance
T
3
Address
54
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