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W25Q128FVEIG Datasheet(HTML) 20 Page - Winbond

Part No. W25Q128FVEIG
Description  SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI
Download  97 Pages
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Maker  WINBOND [Winbond]
Homepage  http://www.winbond.com
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W25Q128FVEIG Datasheet(HTML) 20 Page - Winbond

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W25Q128FV
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Figure 4c. Status Register-3
7.1.11 Write Protect Selection (WPS) – Volatile/Non-Volatile Writable
The WPS bit is used to select which Write Protect scheme should be used. When WPS=0, the device will
use the combination of CMP, SEC, TB, BP[2:0] bits to protect a specific area of the memory array. When
WPS=1, the device will utilize the Individual Block Locks to protect any individual sector or blocks. The
default value for all Individual Block Lock bits is 1 upon device power on or after reset.
7.1.12 Output Driver Strength (DRV1, DRV0) – Volatile/Non-Volatile Writable
The DRV1 & DRV0 bits are used to determine the output driver strength for the Read operations.
DRV1, DRV0
Driver Strength
0, 0
100%
0, 1
75%
1, 0
50%
1, 1
25% (default setting)
7.1.13 /HOLD or /RESET Pin Function (HOLD/RST) – Volatile/Non-Volatile Writable
The HOLD/RST bit is used to determine whether /HOLD or /RESET function should be implemented on
the hardware pin for 8-pin packages. When HOLD/RST=0 (factory default), the pin acts as /HOLD; when
HOLD/RST=1, the pin acts as /RESET. However, /HOLD or /RESET functions are only available when
QE=0. If QE is set to 1, the /HOLD and /RESET functions are disabled, the pin acts as a dedicated data
I/O pin.
7.1.14 Reserved Bits – Non Functional
There are a few reserved Status Register bits that may be read out as a “0” or “1”. It is recommended to
ignore the values of those bits. During a “Write Status Register” instruction, the Reserved Bits can be
written as “0”, but there will not be any effects.


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