W25Q32FVTBIG-TR Datasheet, PDF (79/99 Pages) Winbond – 3V 32M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI

W25Q32FV
8.2.41 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. A Write Enable instruction must be executed before the device
will accept the Global Block/Sector Lock Instruction (Status Register bit WEL= 1).
/CS
CLK
Mode 3
Mode 0
DI
(IO0)
DO
(IO1)
01234567
Mode 3
Mode 0
Instruction (7Eh)
High Impedance
/CS
CLK
IO0
Mode 3
Mode 0
01
Instruction
7Eh
Mode 3
Mode 0
IO1
IO2
IO3
Figure 55. Global Block Lock Instruction for SPI Mode (left) or QPI Mode (right)
8.2.42 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. A Write Enable instruction must be executed before the
device will accept the Global Block/Sector Unlock Instruction (Status Register bit WEL= 1).
/CS
CLK
Mode 3
Mode 0
DI
(IO0)
DO
(IO1)
01234567
Instruction (98h)
Mode 3
Mode 0
High Impedance
/CS
CLK
IO0
Mode 3
Mode 0
01
Instruction
98h
Mode 3
Mode 0
IO1
IO2
IO3
Figure 56. Global Block Unlock Instruction for SPI Mode (left) or QPI Mode (right)
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Publication Release Date: June 03, 2016
Revision J