MC68HC811L1L1 View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MC68HC811L1L1

ROM-based high-performance microcontrollers

Freescale Semiconductor 

Freescale Semiconductor, Inc.

4.2 Memory Map

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.

$0000

$0040

EXT

$7000

EXT

0000 64-BYTE REGISTER BLOCK

003F

0040 192 BYTES STATIC RAM

00FF

EXT

7000 4 KBYTES ROM

7FFF

BOOT

BF00 ROM

BFFF

BFC0

BFFF

SPECIAL MODES

INTERRUPT

VECTORS

$F000

$FFFF

SINGLE

CHIP

EXPANDED BOOTSTRAP

SPECIAL

TEST

F000

FFFFFFFF

4 KBYTES ROM

FFC0

FFFF

NORMAL

MODES

INTERRUPT

VECTORS

D3 MEM MAP

Figure 4-2 MC68HC11D3 Memory Map

OPERATING MODES AND ON-CHIP MEMORY

TECHNICAL DATA

4-3

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