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W25Q40BW
8.2.4
Instruction Set Table 3 (ID, Security Instructions)
INSTRUCTION
NAME
Release Power down/
Device ID
Manufacturer/
(2)
Device ID
Manufacturer/Device ID
by Dual I/O
Manufacture/Device ID
by Quad I/O
JEDEC ID
Read Unique ID
Erase
(3)
Security Registers
BYTE 1
(CODE)
ABh
90h
92h
94h
9Fh
4Bh
44h
BYTE 2
dummy
dummy
A23-A8
A23-A0, M[7:0]
(MF7-MF0)
Manufacturer
dummy
A23 – A16
BYTE 3
dummy
dummy
A7-A0, M[7:0]
xxxx, (MF[7:0], ID[7:0])
(ID15-ID8)
Memory Type
dummy
A15 – A8
BYTE 4
dummy
00h
(MF[7:0], ID[7:0])
(MF[7:0], ID[7:0], …)
(ID7-ID0)
Capacity
dummy
A7 – A0
BYTE 5
(1)
(ID7-ID0)
(MF7-MF0)
dummy
BYTE 6
(ID7-ID0)
(ID63-ID0)
Program
Security Registers
Read
Security Registers
(3)
(3)
42h
48h
A23 – A16
A23 – A16
A15 – A8
A15 – A8
A7 – A0
A7 – A0
D7-D0
dummy
D7-D0
(D7-0)
Notes:
1. The Device ID will repeat continuously until /CS terminates the instruction.
2. See Manufacturer and Device Identification table for Device ID information.
3. Security Register Address:
Security Register 0:
Security Register 1:
Security Register 2:
Security Register 3:
A23-16 = 00h;
A23-16 = 00h;
A23-16 = 00h;
A23-16 = 00h;
A15-8 = 00h;
A15-8 = 10h;
A15-8 = 20h;
A15-8 = 30h;
A7-0 = byte address
A7-0 = byte address
A7-0 = byte address
A7-0 = byte address
Please note that Security Register 0 is Reserved by Winbond for future use. It is recommended to use Security
registers 1- 3 before using register 0.
Publication Release Date: October 11, 2013
- 19 -
Revision F
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