W25Q20BW_13 Datasheet, PDF (16/72 Pages) Winbond – 1.8V 2M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI

W25Q20BW
8.1.12 Status Register Memory Protection (CMP = 1)
STATUS REGISTER⁽¹⁾
SEC TB BP2 BP1 BP0
0
XX
0
0
0
0X
0
1
0
0X
1
0
0
1X
0
1
0
1X
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
0 thru 3
0 thru 2
0 and 1
000000h – 03FFFFh
000000h – 02FFFFh
000000h – 01FFFFh
256KB
192KB
128KB
ALL
Lower 3/4
Lower 1/2
1 thru 3
2 and 3
NONE
010000h – 03FFFFh
020000h – 03FFFFh
NONE
192KB
128KB
NONE
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
256KB
252KB
248KB
240KB
224KB
252KB
248KB
240KB
224KB
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.
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