ST92F124/F150/F250 - REGISTER AND MEMORY MAP
Figure 39. ST92F150/F250 External Memory Map
3FFFFFh
External
Memory
Upper Memory(1.8 Mbytes)
(usually external RAM starting
in Segment 24h)
250000h
24FFFFh
PAGE 93h - 16 Kbytes
PAGE 92h - 16 Kbytes
PAGE 91h - 16 Kbytes
PAGE 90h - 16 Kbytes
24C000h
24BFFFh
SEGMENT 24h
64 Kbytes
248000h
247FFFh
244000h
243FFFh
240000h
Segments 20h to 23h
(Reserved for
internal
memory)
(256Kbytes)
1FFFFFh
External
Memory
Lower Memory
(usually external ROM/FLASH
starting in Segment 4h)
(1.8 Mbytes)
050000h
04FFFFh
PAGE 13h - 16 Kbytes
PAGE 12h - 16 Kbytes
PAGE 11h - 16 Kbytes
PAGE 10h - 16 Kbytes
04C000h
04BFFFh
SEGMENT 4h
64 Kbytes
048000h
047FFFh
044000h
043FFFh
040000h
Segments 0h to 3h
(Reserved for
internal
memory)
(256Kbytes)
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