Freescale Semiconductor, Inc.
Operating Modes and On-Chip Memory
Table 3-5. RAM and register remapping
RAM[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
Location
REG[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
Location
$0000–$03FF
$1000–$13FF
$2000–$23FF
$3000–$33FF
$4000–$43FF
$5000–$53FF
$6000–$63FF
$7000–$73FF
$8000–$83FF
$9000–$93FF
$A000–$A3FF
$B000–$B3FF
$C000–$C3FF
$D000–$D3FF
$E000–$E3FF
$F000–$F3FF
$0000–$007F
$1000–$107F
$2000–$207F
$3000–$307F
$4000–$407F
$5000–$507F
$6000–$607F
$7000–$707F
$8000–$807F
$9000–$907F
$A000–$A07F
$B000–$B07F
$C000–$C07F
$D000–$D07F
$E000–$E07F
$F000–$F07F
1000
1001
1010
1011
1100
1101
1110
1000
1001
1010
1011
1100
1101
1110
1111
1111
NOTE: When the memory map has the 128-byte register block mapped at the
same location as RAM, the registers have priority and the RAM is
relocated to the memory space immediately following the register block.
This mapping feature keeps all the RAM available for use. Refer to
Figure 3-2, which illustrates the overlap.
Technical Data
MC68HC11P2 — Rev 1.0
Operating Modes and On-Chip Memory
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