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32.3.1 Flash Configuration Field Description
The program flash memory contains a 16-byte flash configuration field that stores default
protection settings (loaded on reset) and security information that allows the MCU to
restrict access to the flash memory module.
Flash Configuration Field Byte
Address
0x0_0400–0x0_0407
0x0_0408–0x0_040B
0x0_040F
0x0_040E
0x0_040D
0x0_040C
32.3.2 Program Flash IFR Map
The program flash IFR is nonvolatile information memory that can be read freely, but the
user has no erase and limited program capabilities (see the Read Once, Program Once,
and Read Resource commands in
Read Resource
Command).
The contents of the program flash IFR are summarized in the table found here and further
described in the subsequent paragraphs.
The program flash IFR is located within the program flash 0 memory block .
Address Range
0x00 – 0x9F
0xA0 – 0xA3
0xA4 – 0xA7
0xA8 – 0xAB
Freescale Semiconductor, Inc.
Size (Bytes)
8
4
1
1
1
1
Read Once
Command,
Size (Bytes)
160
4
4
4
Table continues on the next page...
KV4x Reference Manual, Rev. 2, 02/2015
Preliminary
Chapter 32 Flash Memory Module (FTFA)
Field Description
Backdoor Comparison Key. Refer to
Verify Backdoor Access Key Command
and
Unsecuring the Chip Using
Backdoor Key
Access.
Program flash protection bytes. Refer to
the description of the Program Flash
Protection Registers (FPROT0-3).
Reserved
Reserved
Flash nonvolatile option byte. Refer to
the description of the Flash Option
Register (FOPT).
Flash security byte. Refer to the
description of the Flash Security
Register (FSEC).
Program Once Command
Field Description
Reserved
Program Once XACCH-1 Field
(index = 0x10)
Program Once XACCL-1 Field
(index = 0x10)
Program Once XACCH-2 Field
(index = 0x11)
and
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