mc68hc11d0cfn2 Freescale Semiconductor, Inc, mc68hc11d0cfn2 Datasheet - Page 24

• Manufacturer Part Number: mc68hc11d0cfn2
• Description: M68hc11 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Operating Modes and Memory
2.3 Memory Map
Data Sheet
24
$C000
$D000
$FFFF
$A000
$B000
$E000
$0000
$1000
$2000
$3000
$4000
$5000
$6000
$7000
$8000
$9000
$F000
SINGLE
CHIP
MULTIPLEXED BOOTSTRAP
Figure 2-1
(single-chip and expanded-multiplexed), as well as for both special modes of
operation (bootstrap and test).
EXPANDED
EXTERNAL
•
•
•
•
Freescale Semiconductor, Inc.
In the single-chip mode, the MCU does not generate external addresses.
The internal memory locations are shown in the shaded areas, and the
contents of these shaded areas are explained on the right side of the
diagram.
In expanded-multiplexed mode, the memory locations are basically the
same as in the single-chip mode except that the memory locations between
shaded areas are for externally addressed memory and I/O.
The special bootstrap mode is similar to the single-chip mode, except that
the bootstrap program ROM is located at memory locations $BF00–$BFFF,
vectors included.
The special test mode is similar to the expanded-multiplexed mode except
the interrupt vectors are at external memory locations.
MODB
Figure 2-1. MC68HC711D3 Memory Map
For More Information On This Product,
1
1
0
0
illustrates the memory map for both normal modes of operation
SPECIAL
MODA
Operating Modes and Memory
Go to: www.freescale.com
0
1
0
1
EXTERNAL
SPECIAL
Single-chip (mode 0)
Expanded multiplexed (mode 1)
Special bootstrap
Special test
TEST
Mode Selected
$BFFF
$BFFF
$00FF
$7FFF
$BF00
$BF00
$0000
$003F
$0040
$7000
INTERNAL REGISTERS AND I/O
(MAY BE MAPPED TO ANY 4-K BOUNDARY
USING INIT REGISTER)
192 BYTES STATIC RAM
(MAY BE MAPPED TO ANY 4-K BOUNDARY
USING THE INIT REGISTER)
4 KBYTES PROM (ROM)
PRESENT AT RESET AND MAY BE DISABLED BY
EPON (ROM ON) BIT IN CONFIG REGISTER.
INTERRUPT VECTORS ARE EXTERNAL.
PROM (ROM)
BOOT ROM
256-BYTES
4-KBYTES
$BFC0
$BFFF
$BFC0
$BFFF
MC68HC711D3 — Rev. 2
SPECIAL MODES
INTERRUPT
VECTORS
NORMAL MODES
INTERRUPT
VECTORS
MOTOROLA