W25Q20BW
8.1.11 Status Register Memory Protection (CMP = 0)
STATUS REGISTER(1)
W25Q20BW 2M-BIT MEMORY PROTECTED(2)
SEC
TB
BP2 BP1 BP0
BLOCK(S)
ADDRESSES
DENSITY
PORTION
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
X
0
0
1
1
X
X
0
0
0
0
1
1
1
1
X
X
X
X
X
X
X
0
0
0
0
1
0
0
0
1
1
0
0
1
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
X
1
0
1
X
1
NONE
NONE
NONE
64KB
128KB
64KB
128KB
256KB
NONE
4KB
NONE
Upper 1/4
Upper 1/2
Lower 1/4
Lower 1/2
ALL
3
030000h – 03FFFFh
020000h – 03FFFFh
000000h – 00FFFFh
000000h – 01FFFFh
000000h – 03FFFFh
NONE
2 and 3
0
0 and 1
0 thru 3
NONE
NONE
3
03F000h – 03FFFFh
03E000h – 03FFFFh
03C000h – 03FFFFh
038000h – 03FFFFh
000000h – 000FFFh
000000h – 001FFFh
000000h – 003FFFh
000000h – 007FFFh
000000h – 03FFFFh
Upper 1/64
Upper 1/32
Upper 1/16
Upper 1/8
Lower 1/64
Lower 1/32
Lower 1/16
Lower 1/8
ALL
3
8KB
3
16KB
32KB
4KB
3
0
0
8KB
0
0
16KB
32KB
256KB
0 thru 3
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.
- 14 -
WINBOND [ WINBOND ]
