ST10F296 datasheet(62/346 Pages) STMICROELECTRONICS

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ST10F296E

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5.5

Write operation examples

Examples are presented below for each kind of Flash write operation.

5.5.1

Word program

Example: 32-bit word program of data 0xAAAAAAAA at address 0x0C5554 in XFlash

module.

FCR0H|= 0x2000;

/*Set WPG in FCR0H */

FARL = 0x5554;

/*Load Add in FARL*/

FARH = 0x000C;

/*Load Add in FARH*/

FDR0L = 0xAAAA;

/*Load Data in FDR0L*/

FDR0H = 0xAAAA;

/*Load Data in FDR0H*/

FCR0H|= 0x8000;

/*Operation start*/

5.5.2

Double word program

Example: Double word program (64-bit) of data 0x55AA55AA at address 0x095558 and

data 0xAA55AA55 at address 0x09555C in IFlash module.

FCR0H|= 0x1080;

/*Set DWPG, SMOD*/

FARL = 0x5558;

/*Load Add in FARL*/

FARH = 0x0009;

/*Load Add in FARH*/

FDR0L = 0x55AA;

/*Load Data in FDR0L*/

FDR0H = 0x55AA;

/*Load Data in FDR0H*/

FDR1L = 0xAA55;

/*Load Data in FDR1L*/

FDR1H = 0xAA55;

/*Load Data in FDR1H*/

FCR0H|= 0x8000;

/*Operation start*/

Double word program is always performed on the double word aligned on an even word. Bit

ADD2 of FARL is ignored.

5.5.3

Sector erase

Example: Sector erase of sectors B3F1 and B3F0 of Bank 3 in XFlash module.

FCR0H|= 0x0800;

/*Set SER in FCR0H*/

FCR1H|= 0x0003;

/*Set B3F1, B3F0*/

FCR0H|= 0x8000;

/*Operation start*/

5.5.4

Suspend and resume

Example: Word program, double word program, and sector erase operations can be

suspended in the following way:

FCR0H|= 0x4000;

/*Set SUSP in FCR0H*/

The operation can be resumed in the following way:

FCR0H|= 0x0800;

/*Set SER in FCR0H*/

FCR0H|= 0x8000;

/*Operation resume*/

Before resuming a suspended erase, FCR1H/FCR1L registers must be read to check if the

erase is already completed (FCR1H = FCR1L = 0x0000 if erase is complete). The original

setup of select operation bits in the FCR0H/L registers must be restored before the

operation resume, otherwise the operation is aborted and bit RESER of FER is set.

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