W25X64BV Datasheet, PDF (12/43 Pages) Winbond – 64M-BIT SERIAL FLASH MEMORY WITH 4KB SECTORS AND DUAL OUTPUT SPI

W25X64BV
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
W25X64BV (64M-BIT) MEMORY PROTECTION
BLOCK(S)
NONE
126 and 127
124 and 127
120 thru 127
112 thru 127
ADDRESSES
NONE
7E0000h - 7FFFFFh
7C0000h - 7FFFFFh
780000h - 7FFFFFh
700000h - 7FFFFFh
DENSITY
NONE
128KB
256KB
512KB
1MB
PORTION
NONE
Upper 1/64
Upper 1/32
Upper 1/16
Upper 1/8
96 thru 127
64 thru 127
600000h - 7FFFFFh
400000h - 7FFFFFh
2MB
4MB
Upper 1/4
Upper 1/2
0 and 1
0 thru 3
0 thru 7
0 thru 15
0 thru 31
000000h - 01FFFFh
000000h - 03FFFFh
000000h - 07FFFFh
000000h – 0FFFFFh
000000h – 1FFFFFh
128KB
256KB
512KB
1MB
2MB
Lower 1/64
Lower 1/32
Lower 1/16
Lower 1/8
Lower 1/4
0 thru 63
0 thru 127
000000h – 3FFFFFh
000000h - 7FFFFFh
4MB
8MB
Lower 1/2
ALL
Note:
1. x = don’t care
- 12 -