Information

FTFL_FCCOBn field descriptions (continued)
Field Description
FCCOB Number Typical Command Parameter Contents [7:0]
A Data Byte 6
B Data Byte 7
FCCOB Endianness and Multi-Byte Access :
The FCCOB register group uses a big endian addressing convention. For all command parameter fields
larger than 1 byte, the most significant data resides in the lowest FCCOB register number. The FCCOB
register group may be read and written as individual bytes, aligned words (2 bytes) or aligned longwords
(4 bytes).
28.34.6 Program Flash Protection Registers (FTFL_FPROTn)
The FPROT registers define which logical program flash regions are protected from
program and erase operations. Protected flash regions cannot have their content changed;
that is, these regions cannot be programmed and cannot be erased by any FTFL
command. Unprotected regions can be changed by program and erase operations.
The four FPROT registers allow 32 protectable regions. Each bit protects a 1/32 region of
the program flash memory. The bitfields are defined in each register as follows:
Program flash protection register Program flash protection bits
FPROT0 PROT[31:24]
FPROT1 PROT[23:16]
FPROT2 PROT[15:8]
FPROT3 PROT[7:0]
During the reset sequence, the FPROT registers are loaded with the contents of the
program flash protection bytes in the Flash Configuration Field as indicated in the
following table.
Program flash protection register Flash Configuration Field offset address
FPROT0 0x0008
FPROT1 0x0009
FPROT2 0x000A
FPROT3 0x000B
To change the program flash protection that is loaded during the reset sequence,
unprotect the sector of program flash memory that contains the Flash Configuration
Field. Then, reprogram the program flash protection byte.
Memory Map and Registers
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
622 Freescale Semiconductor, Inc.