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24.4.1 Flash Protection
Individual regions within the flash memory can be protected from program and erase
operations.
Protection is controlled by the following registers:
• FPROTn —
• For 2
n
program flash sizes, four registers typically protect 32 regions of the
program flash memory as shown in the following figure
Program flash size / 32
Program flash size / 32
Program flash size / 32
Program flash size / 32
Program flash size / 32
Program flash size / 32
Program flash size / 32
FPROT3[PROT0]
0x0_0000
FPROT3[PROT1]
FPROT3[PROT2]
FPROT3[PROT3]
FPROT0[PROT29]
FPROT0[PROT31]
FPROT0[PROT30]
Program flash
Last program flash address
Figure 24-2. Program flash protection
NOTE
Flash protection features are discussed further in
Using the Kinetis Security and Flash Protection Features
all features described in the application note are available on
this device.
24.4.2 Flash Access Protection
Individual segments within the program flash memory can be designated for restricted
access. Specific flash commands (Program Check, Program Longword, Erase Flash
Block, Erase Flash Sector) monitor FXACC contents to protect flash memory but the
FSACC contents do not impact flash command operation.
See
AN5112: Using the Kinetis Flash Execute-Only Access Control Feature
for further
details.
Chapter 24 Flash Memory Module (FTFA)
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors
623
Содержание K32 L2A Series
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