SST25VF080B View Datasheet(PDF) - Silicon Storage Technology

Part Name

Description

Manufacturer

SST25VF080B

8 Mbit SPI Serial Flash

Silicon Storage Technology 

A Microchip Technology Company

8 Mbit SPI Serial Flash

SST25VF080B

Data Sheet

Write-Enable (WREN)

The Write-Enable (WREN) instruction sets the Write-Enable-Latch bit in the Status Register to 1 allow-

ing Write operations to occur. The WREN instruction must be executed prior to any Write (Program/

Erase) operation. The WREN instruction may also be used to allow execution of the Write-Status-Reg-

ister (WRSR) instruction; however, the Write-Enable-Latch bit in the Status Register will be cleared

upon the rising edge CE# of the WRSR instruction. CE# must be driven high before the WREN instruc-

tion is executed.

CE#

MODE 3

SCK MODE 0

0 1 2345 6 7

SI

06

MSB

SO

HIGH IMPEDANCE

1296 WREN.0

Figure 17:Write Enable (WREN) Sequence

Write-Disable (WRDI)

The Write-Disable (WRDI) instruction resets the Write-Enable-Latch bit and AAI bit to 0 disabling any

new Write operations from occurring. The WRDI instruction will not terminate any programming opera-

tion in progress. Any program operation in progress may continue up to TBP after executing the WRDI

instruction. CE# must be driven high before the WRDI instruction is executed.

CE#

MODE 3

SCK MODE 0

0 1 2345 6 7

SI

04

MSB

SO

HIGH IMPEDANCE

1296 WRDI.0

Figure 18:Write Disable (WRDI) Sequence

©2011 Silicon Storage Technology, Inc.

19

S71296-05-000

02/11

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