AM186 Datasheet, PDF (50/112 Pages) Advanced Micro Devices – High-Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers with RAM

Memory Maps
There are several possible ways to configure the ad-
dress space of the Am186ER and Am188ER microcon-
trollers. Four of the most popular configurations are
shown in Figure 12.
1 Mbyte
External Flash
(UCS)
512 Kbytes
External Flash
(UCS)
1 Mbyte
768 Kbytes
1 Mbyte
External Flash
(UCS)
External RAM
(MCS3–MCS0)
512 Kbytes
256 Kbytes
External Flash
(UCS)
Internal RAM
1 Mbyte
768 Kbytes
544 Kbytes
512 Kbytes
External RAM
(LCS)
32 Kbytes
Internal RAM
0 Kbyte
512 Kbytes Flash
No External RAM
External RAM
(MCS)
32 Kbytes
Internal RAM
0 Kbyte
256 Kbytes Flash
Internal RAM at 0
32 Kbytes External RAM
Internal RAM
32 Kbytes
0 Kbyte
0 Kbyte
512 Kbytes Flash
256 Kbytes Flash
Internal RAM at 0
512 Kbytes External RAM
256 Kbytes External RAM
Internal RAM Located
Above External RAM
T _{Shaded areas represent open memory that can be used by}
other chip selects and the PCB, if located in memory.
D ^{R A F Figure 12. Example Memory Maps}
50
Am186^TMER and Am188^TMER Microcontrollers Data Sheet