W25Q20BWSNIP 参数 Datasheet PDF下载

W25Q20BW

8.2.4

Instruction Set Table 3 (ID, Security Instructions)

BYTE 1

(CODE)

ABh

90h

92h

94h

9Fh

4Bh

(3)

INSTRUCTION

NAME

Release Power down/

Device ID

Manufacturer/

Device ID

(2)

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

(ID7-ID0)

(1)

BYTE 6

(MF7-MF0)

(ID7-ID0)

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

(3)

(3)

dummy

(ID63-ID0)

44h

42h

A23–A16

A15–A8

A7–A0

D7-D0

D7-D0

48h

A23–A16

A15–A8

A7–A0

dummy

(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.

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Publication Release Date: January 25, 2011

Preliminary - Revision B