mc68hc11d0 Freescale Semiconductor, Inc, mc68hc11d0 Datasheet - Page 37

• Manufacturer Part Number: mc68hc11d0
• Description: Mc68hc11d0 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

4.2 Memory Map
TECHNICAL DATA
$FFFF
$0000
$0040
$7000
$F000
The operating mode determines memory mapping and whether memory is addressed
on- or off-chip. Refer to Figure 4-2, which illustrates the memory maps for each of the
four modes of operation. Memory locations for on-chip resources are the same for both
expanded multiplexed and single-chip modes. 192-byte RAM is mapped to $0040 af-
ter reset. It can be placed at any other 4K boundary ($x040) by writing an appropriate
value to the INIT register. The 64-byte register block is mapped to $0000 after reset
and can also be placed at any 4K boundary ($x000) by writing an appropriate value to
the INIT register. Refer to Table 4-1, which details the MCU register and control bit
assignments.
SINGLE
CHIP
EXPANDED
EXT
EXT
Freescale Semiconductor, Inc.
Figure 4-2 MC68HC11D3 Memory Map
OPERATING MODES AND ON-CHIP MEMORY
For More Information On This Product,
BOOTSTRAP
Go to: www.freescale.com
SPECIAL
TEST
EXT
BFFF
00FF
7FFF
BF00
FFFF
FFFF
0000
003F
0040
7000
F000
4 KBYTES ROM
BOOT
ROM
4 KBYTES ROM
192 BYTES STATIC RAM
64-BYTE REGISTER BLOCK
BFC0
BFFF
FFC0
FFFF
SPECIAL MODES
INTERRUPT
VECTORS
NORMAL
MODES
INTERRUPT
VECTORS
D3 MEM MAP
4-3