w25q40bw Winbond Electronics Corp America, w25q40bw Datasheet - Page 19

• Manufacturer Part Number: w25q40bw
• Description: 1.8v 4m-bit Serial Flash Memory With Dual And Quad Spi
• Manufacturer: Winbond Electronics Corp America

8.2.4
Release Power down/
Device ID
Manufacturer/
Device ID
Manufacturer/Device ID
by Dual I/O
Manufacture/Device ID
by Quad I/O
JEDEC ID
Read Unique ID
Erase
Security Registers
Program
Security Registers
Read
Security Registers
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:
INSTRUCTION
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.
Security Register 0: A23-16 = 00h; A15-8 = 00h; A7-0 = byte address
Security Register 1: A23-16 = 00h; A15-8 = 10h; A7-0 = byte address
Security Register 2: A23-16 = 00h; A15-8 = 20h; A7-0 = byte address
Security Register 3: A23-16 = 00h; A15-8 = 30h; A7-0 = byte address
NAME
(2)
Instruction Set Table 3 (ID, Security Instructions)
(3)
(3)
(3)
BYTE 1
(CODE)
ABh
4Bh
90h
92h
94h
9Fh
44h
42h
48h
A23-A0, M[7:0]
Manufacturer
(MF7-MF0)
A23–A16
A23–A16
A23–A16
BYTE 2
A23-A8
dummy
dummy
dummy
xxxx, (MF[7:0], ID[7:0])
A7-A0, M[7:0]
Memory Type
(ID15-ID8)
BYTE 3
A15–A8
A15–A8
A15–A8
dummy
dummy
dummy
- 19 -
(MF[7:0], ID[7:0], …)
Publication Release Date: January 27, 2011
(MF[7:0], ID[7:0])
(ID7-ID0)
BYTE 4
Capacity
dummy
dummy
A7–A0
A7–A0
A7–A0
00h
Preliminary - Revision A
(ID7-ID0)
(MF7-MF0)
W25Q40BW
BYTE 5
dummy
dummy
D7-D0
(1)
(ID63-ID0)
(ID7-ID0)
BYTE 6
D7-D0
(D7-0)