ST10F276Z5 datasheet(32/239 Pages) STMICROELECTRONICS

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Internal Flash memory

ST10F276Z5

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4.4.3

Flash control register 1 low

The Flash control register 1 low (FCR1L), together with Flash control register 1 high

(FCR1H), is used to select the sectors to erase, or during any write operation to monitor the

status of each sector of the module selected by SMOD bit of FCR0H. First diagram shows

FCR1L meaning when SMOD=0; the second one when SMOD=1.

FCR1L (0x0E 0004) SMOD=0

FCR

Reset value: 0000h

987

65432

Reserved

B2F2 B2F1 B2F0

FCR1L (0x0E 0004) SMOD=1

FCR

Reset value: 0000h

987

65432

Reserved

B0F9 B0F8 B0F7 B0F6 B0F5 B0F4 B0F3 B0F2 B0F1 B0F0

Table 9.

Flash control register 1 low

Bit

Function

SMOD=0 (XFLASH selected)

B2F(2:0)

Bank 2 XFLASH sector 2:0 status

These bits must be set during a Sector Erase operation to select the sectors to erase

in bank 2. Besides, during any erase operation, these bits are automatically set and

give the status of the 3 sectors of bank 2 (B2F2-B2F0). The meaning of B2Fy bit for

sector y of bank 2 is given by the next Table 11. These bits are automatically reset at

the end of a write operation if no errors are detected.

SMOD=1 (IFLASH selected)

B0F(9:0)

Bank 0 IFLASH sector 9:0 status

These bits must be set during a Sector Erase operation to select the sectors to erase

in bank 0. Besides, during any erase operation, these bits are automatically set and

give the status of the 10 sectors of bank 0 (B0F9-B0F0). The meaning of B0Fy bit for

sector y of bank 0 is given by the next Table 11. These bits are automatically reset at

the end of a Write operation if no errors are detected.

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