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8 Kbytes
1FF9H
1FF8H
128 Kbytes
1:FFF9H
3:FFF9H
1:FFF8H
3:FFF8H
This figure shows the addresses of configuration bytes UCONFIG1 and UCONFIG0 in external memory for
several memory implementations. For EA# = 0, the 8XC251Sx obtains configuration information from configuration
bytes in external memory using internal addresses FF:FFF8H and FF:FFF9H. In external memory, the eight-byte
configuration array is located at the highest addresses implemented.
Figure 4-2. Configuration Array (External)
16 Kbytes
7FF9H
7FF8H
3FF9H
3FF8H
256 Kbytes
DEVICE CONFIGURATION
64 Kbytes
32 Kbytes
FFF9H
FFF8H
x :xFFFH
x :xFFEH
x :xFFDH
x :xFFCH
x :xFFBH
x :xFFAH
x :xFF9H
x :xFF8H
Detail.
Configuration array in external memory.
Reserved
UCONFIG1
UCONFIG0
A4236-01
4-3
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