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DS20005071B

04/15

16

32 Mbit SPI Serial Flash

SST25VF032B

EOL Data Sheet

32-KByte and 64-KByte Block-Erase

The 32-KByte Block-Erase instruction clears all bits in the selected 32 KByte block to FFH. A Block-

Erase instruction applied to a protected memory area will be ignored. The 64-KByte Block-Erase instruc-

tion clears all bits in the selected 64 KByte block to FFH. A Block-Erase instruction applied to a protected mem-

ory area will be ignored. Prior to any Write operation, the Write-Enable (WREN) instruction must be executed.

CE# must remain active low for the duration of any command sequence. The 32-KByte Block-Erase

CE# must be driven high before the instruction is executed. Poll the Busy bit in the software status register or

cycles. See Figure 13 for the 32-KByte Block-Erase sequence and Figure 14 for the 64-KByte Block-

Erase sequence.

Figure 13:32-KByte Block-Erase Sequence

Figure 14:64-KByte Block-Erase Sequence

CE#

SO

SI

SCK

ADDR

01 2 3 4 5 6 7 8

ADDR

ADDR

52

HIGH IMPEDANCE

15 16

23 24

31

MODE 0

MODE 3

1327 32KBklEr.0

MSB

MSB

CE#

SO

SI

SCK

ADDR

01 2 3 4 5 6 7 8

ADDR

ADDR

D8

HIGH IMPEDANCE

15 16

23 24

31

MODE 0

MODE 3

1327 63KBlkEr.0

MSB

MSB