W25Q256FVBIF-TR Datasheet, PDF (92/108 Pages) Winbond – 3V 256M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI

W25Q256FV
8.2.51 Global Block/Sector Lock (7Eh)
All Block/Sector Lock bits can be set to 1 by the Global Block/Sector Lock instruction. The command
must be issued by driving /CS low, shifting the instruction code “7Eh” into the Data Input (DI) pin on the
rising edge of CLK, and then driving /CS high.
/CS
CLK
Mode 3
Mode 0
DI
(IO₀)
DO
(IO₁)
0 1 2 3 4 5 6 7 Mode 3
Mode 0
Instruction (7Eh)
/CS
CLK
IO₀
Mode 3
Mode 0
01
Instruction
7Eh
Mode 3
Mode 0
IO₁
High Impedance
IO₂
IO₃
Figure 55. Global Block Lock Instruction for SPI Mode (left) or QPI Mode (right)
8.2.52 Global Block/Sector Unlock (98h)
All Block/Sector Lock bits can be set to 0 by the Global Block/Sector Unlock instruction. The command
must be issued by driving /CS low, shifting the instruction code “98h” into the Data Input (DI) pin on the
rising edge of CLK, and then driving /CS high.
/CS
CLK
Mode 3
Mode 0
DI
(IO₀)
DO
(IO₁)
0 1 2 3 4 5 6 7 Mode 3
Mode 0
Instruction (98h)
/CS
CLK
IO₀
Mode 3
Mode 0
01
Instruction
98h
Mode 3
Mode 0
IO₁
High Impedance
IO₂
IO₃
Figure 56. Global Block Unlock Instruction for SPI Mode (left) or QPI Mode (right)
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