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W25X05CLZPIG 数据表(PDF) 11 Page - Winbond

部件名 W25X05CLZPIG
功能描述  2.5 / 3 / 3.3 V 512K / 1M / 2M-BIT SERIAL FLASH MEMORY WITH 4KB SECTORS AND DUAL I/O SPI
PDF  51 Pages
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制造商  WINBOND [Winbond]
网页  http://www.winbond.com
标志 WINBOND - Winbond

W25X05CLZPIG 数据表(HTML) 11 Page - Winbond

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W25X05CL/10CL/20CL
Publication Release Date: March 23, 2012
- 11 -
Revision B
8.1.5 Reserved Bits
Status register bit location S6 and S4 are reserved for future use. Current devices will read 0 for this
bit location. It is recommended to mask out the reserved bit when testing the Status Register. Doing
this will ensure compatibility with future devices.
8.1.6 Status Register Protect (SRP)
The Status Register Protect (SRP) bit is a non-volatile read/write bit in status register (S7) that can be
used in conjunction with the Write Protect (/WP) pin to disable writes to status register. When the SRP
bit is set to a 0 state (factory default) the /WP pin has no control over status register. When the SRP
pin is set to a 1, the Write Status Register instruction is locked out while the /WP pin is low. When the
/WP pin is high the Write Status Register instruction is allowed.
SRP
/WP
Status
Register
Description
0
X
Software
Protection
/WP pin has no control, The Status register can be written to
after a Write Enable instruction WEL = 1. [Factory Default]
1
0
Hardware
Protected
When /WP pin is low the Status Register locked and can
’t be
written to.
1
1
Hardware
Unprotected
When /WP pin is high the status register is unlocked and can
be written to after a Write Enable instruction WEL = 1.
S7
S6
S5
S4
S3
S2
S1
S0
SRP
BP 1
BP0
WEL
BUSY
WRITE ENABLE LATCH
ERASE/WRITE IN PROGRESS
S7
S6
S5
S4
S3
S2
S1
S0
BLOCK PROTECT BITS
STATUS REGISTER PROTECT
(Non-volatile)
(volatile)
(R)
TB
(R)
(Non-volatile)
TOP/BOTTOM PROTECT
(Non-volatile)
RESERVED
(volatile)
Figure 3. Status Register Bit Locations



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