W25Q20BW Datasheet, PDF (14/70 Pages) Winbond – 1.8V 2M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI

W25Q20BW
8.1.11 Status Register Memory Protection (CMP = 0)
STATUS REGISTER⁽¹⁾
SEC TB BP2 BP1 BP0
0
XX
0
0
0
0
X
0
1
0
0
X
1
0
0
1
X
0
1
0
1
X
1
0
0
XX
1
1
1
X0
0
0
1
0
0
0
1
1
0
0
1
0
1
0
0
1
1
1
0
1
0
X
1
1
0
0
1
1
1
0
1
0
1
1
0
1
1
1
1
1
0
X
1
X1
1
1
W25Q20BW 2M-BIT MEMORY PROTECTED⁽²⁾
BLOCK(S)
ADDRESSES
DENSITY
PORTION
NONE
3
2 and 3
NONE
030000h – 03FFFFh
020000h – 03FFFFh
NONE
64KB
128KB
NONE
Upper 1/4
Upper 1/2
0
0 and 1
0 thru 3
000000h – 00FFFFh
000000h – 01FFFFh
000000h – 03FFFFh
64KB
128KB
256KB
Lower 1/4
Lower 1/2
ALL
NONE
3
3
3
3
NONE
03F000h – 03FFFFh
03E000h – 03FFFFh
03C000h – 03FFFFh
038000h – 03FFFFh
NONE
4KB
8KB
16KB
32KB
NONE
Upper 1/64
Upper 1/32
Upper 1/16
Upper 1/8
0
0
0
0
0 thru 3
000000h – 000FFFh
000000h – 001FFFh
000000h – 003FFFh
000000h – 007FFFh
000000h – 03FFFFh
4KB
8KB
16KB
32KB
256KB
Lower 1/64
Lower 1/32
Lower 1/16
Lower 1/8
ALL
Notes:
1. X = don’t care
2. If any Erase or Program command specifies a memory region that contains protected data portion, this
command will be ignored.
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