W25X32BV Datasheet, PDF (12/45 Pages) Winbond – 32M-BIT SERIAL FLASH MEMORY WITH 4KB SECTORS AND DUAL OUTPUT SPI

W25X32BV
10.1.6 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.
Figure 3. Status Register Bit Locations
10.1.7 Status Register Memory Protection
STATUS REGISTER⁽¹⁾
TB BP2 BP1 BP0
x
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
x
1
1
1
W25X32B (32M-BIT) MEMORY PROTECTION
BLOCK(S)
ADDRESSES
DENSITY
NONE
63
NONE
3F0000h – 3FFFFFh
NONE
64KB
62 and 63
60 thru 63
56 thru 63
48 thru 63
32 thru 63
3E0000h – 3FFFFFh
3C0000h – 3FFFFFh
380000h – 3FFFFFh
300000h – 3FFFFFh
200000h – 3FFFFFh
128KB
256KB
512KB
1MB
2MB
0
0 and 1
0 thru 3
0 thru 7
000000h – 00FFFFh
000000h – 01FFFFh
000000h – 03FFFFh
000000h – 07FFFFh
64KB
128KB
256KB
512KB
0 thru 15
0 thru 31
0 thru 63
000000h – 0FFFFFh
000000h – 1FFFFFh
000000h – 3FFFFFh
1MB
2MB
4MB
PORTION
NONE
Upper 1/64
Upper 1/32
Upper 1/16
Upper 1/8
Upper 1/4
Upper 1/2
Lower 1/64
Lower 1/32
Lower 1/16
Lower 1/8
Lower 1/4
Lower 1/2
ALL
Note:
1. x = don’t care
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