SST25VF032B-66-4C-S2AF Microchip Technology, SST25VF032B-66-4C-S2AF Datasheet - Page 18

• Manufacturer Part Number: SST25VF032B-66-4C-S2AF
• Description: Flash 32Mbit 66MHz SPI Industrial Temp
• Manufacturer: Microchip Technology

Specifications of SST25VF032B-66-4C-S2AF

• Product Category: Flash
• Rohs: yes
• Memory Size: 32 Mbit
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8

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©2011 Silicon Storage Technology, Inc.
Write-Enable (WREN)
Write-Disable (WRDI)
The Write-Enable (WREN) instruction sets the Write-Enable-Latch bit in the Status Register to ‘1’
allowing Write operations to occur. The WREN instruction must be executed prior to any Write (Pro-
gram/Erase) operation. The WREN instruction may also be used to allow execution of the Write-Sta-
tus-Register (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
instruction is executed.
Figure 17:Write Enable (WREN) Sequence
The Write-Disable (WRDI) instruction resets the Write-Enable-Latch bit and AAI bit to ‘0,’ therefore,
preventing any new Write operations. The WRDI instruction will not terminate any programming opera-
tion in progress. Any program operation in progress may continue up to T
instruction. CE# must be driven high before the WRDI instruction is executed.
Figure 18:Write Disable (WRDI) Sequence
SCK
CE#
SCK
CE#
SO
SO
SI
SI
MODE 3
MODE 0
MODE 3
MODE 0
18
HIGH IMPEDANCE
HIGH IMPEDANCE
MSB
0 1 2 3 4 5 6 7
MSB
0 1 2 3 4 5 6 7
04
06
32 Mbit SPI Serial Flash
1327 F19.0
1327 F18.0
BP
after executing the WRDI
SST25VF032B
S71327-04-000
Data Sheet
02/11