Engineering Bulletin

EB381

8

MOTOROLA

Figure 4. MC68HC11F1 Memory Map

Difference:

EEPROM Block

Protect

Since these two parts differ significantly regarding EEPROM size and

location, the address range and block size that can be protected is

different. See Figure 5, Table 2, and Table 3.

Case 1

Example:

EEPROM block protect

Issue:

EEPROM block protect addresses and sizes are

different.

Change required: The BPRT bits in the BPROT register ($1035)

must be changed to protect the address ranges

and block sizes the user desires.

$0000

$1000

$FE00

$FFFF

EXTERNAL

x000

x3FF

BF00

EXTERNAL

EXTERNAL

FFC0

FFFF

SINGLE

CHIP

EXPANDED BOOTSTRAP

SPECIAL

TEST

EXTERNAL

Notes:

1.

RAM can be remapped to any 4-byte boundary ($x000). “x” represents the value contained in RAM [3:0] in the INIT register.

2.

The register block can be remapped to any 4-byte boundary ($y000). “y” represents the value contained in REG[3:0] in the

INIT register.

3.

Special test mode vectors are externally addressed.

4.

In special test mode the address locations $zD00–$zDFF are not externally addressable. “z” represents the value of bits

EE[3:0] in the CONFIG register.

5.

EEPROM can be remapped to any 4-byte boundary ($z000). “z” represents the value contained in EE[3:0] in the CONFIG

register.

NORMAL MODE

INTERRUPT

VECTORS

EXT

y000

yo5F

zD00

zDFF

zE00

zFFF

BFC0

BFFF

SPECIAL TEST MODE ONLY

INTERRUPT

VECTORS

256 BYTES BOOTSTRAP ROM

Freescale Semiconductor, Inc.

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