©2011 Silicon Storage Technology, Inc.

S71296-05-000

02/11

16

8 Mbit SPI Serial Flash

SST25VF080B

Data Sheet

A Microchip Technology Company

4-KByte Sector-Erase

The Sector-Erase instruction clears all bits in the selected 4 KByte sector to FFH. A Sector-Erase

instruction applied to a protected memory 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 com-

mand sequence. The Sector-Erase instruction is initiated by executing an 8-bit command, 20H, fol-

before the instruction is executed. The user may poll the Busy bit in the software status register or wait

Erase sequence.

Figure 12:Sector-Erase Sequence

CE#

SO

SI

SCK

ADD.

01 2 3 4 5 6 7 8

ADD.

ADD.

20

HIGH IMPEDANCE

15 16

23 24

31

MODE 0

MODE 3

1296 SecErase.0

MSB

MSB