ST10F296 datasheet(64/346 Pages) STMICROELECTRONICS

64 / 346 page

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Internal Flash memory

ST10F296E

64/346

5.5.6

Set protection

Example 1: Enable write protection of sectors B0F3-0 of Bank 0 in the IFlash module.

FCR0H|= 0x0100;

/*Set SPR in FCR0H*/

FARL = 0xDFB4;

/*Load Add of register FNVWPIRL in FARL*/

FARH = 0x000E;

/*Load Add of register FNVWPIRL in FARH*/

FDR0L = 0xFFF0;

/*Load Data in FDR0L*/

FDR0H = 0xFFFF;

/*Load Data in FDR0H*/

FCR0H|= 0x8000;

/*Operation start*/

Bit SMOD of FCR0H must not be set as the write protection bits of the IFlash module are

stored in the Test-Flash (XFlash module).

Example 2: Enable access and debug protection.

FCR0H|= 0x0100;

/*Set SPR in FCR0H*/

FARL = 0xDFB8;

/*Load Add of register FNVAPR0 in FARL*/

FARH = 0x000E;

/*Load Add of register FNVAPR0 in FARH*/

FDR0L = 0xFFFC;

/*Load Data in FDR0L*/

FCR0H|= 0x8000;

/*Operation start*/

Example 3: Disable access and debug protection permanently.

FCR0H|= 0x0100;

/*Set SPR in FCR0H*/

FARL = 0xDFBC;

/*Load Add of register FNVAPR1L in FARL*/

FARH = 0x000E;

/*Load Add of register FNVAPR1L in FARH*/

FDR0L = 0xFFFE;

/*Load Data in FDR0L for clearing PDS0*/

FCR0H|= 0x8000;

/*Operation start*/

Example 4: Re- enable access and debug protection permanently .

FCR0H|= 0x0100;

/*Set SPR in FCR0H*/

FARL = 0xDFBC;

/*Load Add register FNVAPR1H in FARL*/

FARH = 0x000E;

/*Load Add register FNVAPR1H in FARH*/

FDR0H = 0xFFFE;

/*Load Data in FDR0H for clearing PEN0*/

FCR0H|= 0x8000;

/*Operation start*/

Disabling and re-enabling access and debug protection permanently way (as shown above)

can be done up to a maximum of 16 times.

Obsolete

Product(s)

- Obsolete

Product(s)

ST10F296 数据表(PDF) 64 Page - STMicroelectronics

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