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GD5F1GQ4REFJS Datasheet(PDF) 14 Page - GigaDevice Semiconductor (Beijing) Inc.

Part # GD5F1GQ4REFJS
Description  SPI(x1/x2/x4) NAND Flash
PDF  60 Pages
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Manufacturer  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Direct Link  http://www.gigadevice.com/
Logo GIGADEVICE - GigaDevice Semiconductor (Beijing) Inc.

GD5F1GQ4REFJS Datasheet(HTML) 14 Page - GigaDevice Semiconductor (Beijing) Inc.

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SPI(x1/x2/x4) NAND Flash
1G
14
6
WRITE OPERATIONS
6.1 Write Enable (WREN) (06H)
The Write Enable (WREN) command is for setting the Write Enable Latch (WEL) bit. The Write Enable Latch (WEL) bit
must be set prior to following operations that change the contents of the memory array:
• Page program
• OTP program/OTP protection
• Block erase
The WEL bit can be cleared after a reset command.
Figure6-1. Write Enable Sequence Diagram
Command
0
1
2
3
4
5
6
7
06H
CS#
SCLK
SI
SO
High-Z
6.2 Write Disable (WRDI) (04H)
The Write Disable command is for resetting the Write Enable Latch (WEL) bit. The WEL bit is also reset by following
condition:
• Page program
• OTP program/OTP protection
• Block erase
Figure6-2. Write Disable Sequence Diagram
Command
0
1
2
3
4
5
6
7
04H
CS#
SCLK
SI
SO
High-Z



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