Freescale Semiconductor TWR-S12G64 Scalable Platform for Automotive Applications TWR-S12G64-KIT TWR-S12G64-KIT Data Sheet

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Freescale Semiconductor

The FPROT register, described in

, can be set to protect regions in the Flash memory from

accidental program or erase. The Flash memory addresses covered by these protectable regions are shown
in the P-Flash memory map. The higher address region is mainly targeted to hold the boot loader code
since it covers the vector space. Default protection settings as well as security information that allows the
MCU to restrict access to the Flash module are stored in the Flash configuration field as described in

.

0x1_0000 – 0x3_FFFF

192 K

P-Flash Block
Contains Flash Configuration Field
(see

0x3_FF00-0x3_FF07

8

Backdoor Comparison Key
Refer to

,” and

0x3_FF08-0x3_FF0B

1

1

0x3FF08-0x3_FF0F form a Flash phrase and must be programmed in a single command write sequence. Each byte in
the 0x3_FF08 - 0x3_FF0B reserved field should be programmed to 0xFF.

4

Reserved

1

P-Flash Protection byte

.

Refer to

1

EEPROM Protection byte

.

Refer to

0x3_FF0E

1

Flash Nonvolatile byte
Refer to

0x3_FF0F

1

Flash Security byte
Refer to