W25Q20BW
8.1.12 Status Register Memory Protection (CMP = 1)
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
0 thru 3
0 thru 2
0 and 1
1 thru 3
2 and 3
NONE
000000h – 03FFFFh
000000h – 02FFFFh
000000h – 01FFFFh
010000h – 03FFFFh
020000h – 03FFFFh
NONE
256KB
192KB
128KB
192KB
128KB
NONE
256KB
252KB
248KB
240KB
224KB
252KB
248KB
240KB
224KB
NONE
ALL
Lower 3/4
Lower 1/2
Upper 3/4
Upper 1/2
NONE
0 thru 3
0 thru 3
0 thru 3
0 thru 3
0 thru 3
0 thru 3
0 thru 3
0 thru 3
0 thru 3
NONE
000000h – 03FFFFh
000000h – 03EFFFh
000000h – 03DFFFh
000000h – 03BFFFh
000000h – 037FFFh
001000h – 03FFFFh
002000h – 03FFFFh
004000h – 03FFFFh
008000h – 03FFFFh
NONE
ALL
Lower 63/64
Lower 31/32
Lower 15/16
Lower 7/8
Upper 63/64
Upper 31/32
Upper 15/16
Upper 7/8
NONE
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.
Publication Release Date: January 25, 2011
- 15 -
Preliminary - Revision B
WINBOND [ WINBOND ]
