Information

28.4 Functional Description
The following sections describe functional details of the flash memory module.
28.4.1 Flash Protection
Individual regions within the flash memory can be protected from program and erase
operations. Protection is controlled by the following registers:
• FPROTn — Four registers that 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 28-26. Program flash protection
• FDPROT —
• protects eight regions of the data flash memory as shown in the following figure
Functional Description
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
602
Preliminary
Freescale Semiconductor, Inc.
General Business Information