ST10F296 datasheet(65/346 Pages) STMICROELECTRONICS

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Internal Flash memory

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5.6

Write operation summary

Write operations are generally started with the following three steps:

The first instruction is used to select the desired operation by setting its corresponding

selection bit in the Flash control register 0. This instruction is also used to select in

which Flash Module to apply the write operation (by setting/resetting the SMOD bit).

The second step is the definition of the address and data for programming or the

sectors or banks to erase.

The third instruction is used to start the write operation, by setting the start bit, WMS, in

the FCR0 register.

Once selected, but not yet started, one operation can be canceled by resetting the operation

selection bit.

A summary of the available Flash module write operations are shown in Table 34.

Table 34.

Flash write operations

Operation

Select bit

Address and data

Start bit

Word program (32-bit)

WPG

FARL/FARH

FDR0L/FDR0H

WMS

Double word program (64-bit)

DWPG

FARL/FARH

FDR0L/FDR0H

FDR1L/FDR1H

WMS

Sector erase

SER

FCR1L/FCR1H

WMS

Set protection

SPR

FDR0L/FDR0H

WMS

Program/erase suspend

SUSP

None

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