GD25LQ256C Datasheet, PDF (19/68 Pages) ELM Electronics – 256M-bit Serial Flash

GD25LQ256CWIGx 1.8V Uniform Sector Dual and Quad Serial Flash
7.4. Write Disable (WRDI) (04H)
http://www.elm-tech.com
The Write Disable command is for resetting the Write Enable Latch (WEL) bit. The Write Disable command
sequence: CS# goes low → Sending the Write Disable command → CS# goes high. The WEL bit is reset by
following condition: Power-up and upon completion of the Write Status Register, Page Program, Sector Erase,
Block Erase, Chip Erase, Erase/Program Security Registers and Reset commands.
Figure 5. Write Disable Sequence Diagram
CS#
SCLK
SI
SO
01234567
Command
04H
High-Z
Figure 5a. Write Disable Sequence Diagram (QPI)
CS#
SCLK
IO₀
IO₁
IO₂
IO₃
01
Command
04H
68 - 19
Rev.1.0