SST25VF080B-50-4C-QAF Microchip Technology, SST25VF080B-50-4C-QAF Datasheet - Page 19

• Manufacturer Part Number: SST25VF080B-50-4C-QAF
• Description: Flash 8M (1Mx8) 50MHz 2.7-3.6V Commercial
• Manufacturer: Microchip Technology

Specifications of SST25VF080B-50-4C-QAF

• Architecture: Sectored
• Interface Type: 4-Wire
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Current: 15 mA
• Mounting Style: SMD/SMT
• Organization: 4 KB x 256
• Memory Type: SPI Flash
• Memory Size: 8 Mbit
• Operating Temperature: + 70 C
• Package / Case: WSON
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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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 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.
Figure 17:Write Enable (WREN) Sequence
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 T
instruction. CE# must be driven high before the WRDI instruction is executed.
Figure 18:Write Disable (WRDI) Sequence
SCK
CE#
SO
SCK
SI
CE#
SO
SI
MODE 3
MODE 0
MODE 3
MODE 0
19
HIGH IMPEDANCE
MSB
0 1 2 3 4 5 6 7
HIGH IMPEDANCE
MSB
0 1 2 3 4 5 6 7
04
06
1296 WRDI.0
1296 WREN.0
8 Mbit SPI Serial Flash
BP
after executing the WRDI
SST25VF080B
S71296-05-000
Data Sheet
02/11