25Q80DVAIG View Datasheet(PDF) - Winbond

Part Name

Description

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25Q80DVAIG

3V 8M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI

Winbond 

W25Q80DV

Read Manufacturer / Device ID Dual I/O (92h)

The Manufacturer / Device ID Dual I/O instruction is an alternative to the Read Manufacturer/Device ID

instruction that provides both the JEDEC assigned manufacturer ID and the specific device ID at 2x

speed.

The Read Manufacturer / Device ID Dual I/O instruction is similar to the Fast Read Dual I/O instruction.

The instruction is initiated by driving the /CS pin low and shifting the instruction code “92h” followed by

a 24-bit address (A23-A0) of 000000h, but with the capability to input the Address bits two bits per clock.

After which, the Manufacturer ID for Winbond (EFh) and the Device ID are shifted out 2 bits per clock

on the falling edge of CLK with most significant bits (MSB) first as shown in figure 30. The Device ID

values for the W25Q80DV are listed in Manufacturer and Device Identification table. The Manufacturer

and Device IDs can be read continuously, alternating from one to the other. The instruction is completed

by driving /CS high.

/CS

CLK

Mode 3

Mode 0

DI

(IO0)

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Instruction (92h)

A23-16

A15-8

A7-0 (00h)

M7-0

6420642064206420

DO

(IO1)

* = MSB

High Impedance

7531753175317531

*

*

*

*

/CS

CLK

DI

(IO0)

DO

(IO1)

23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38

IOs switch from

Input to Output

06420642064206420

17531753175317531

* MFR ID

* Device ID

* MFR ID

(repeat)

* Device ID

(repeat)

Mode 3

Mode 0

Figure 30. Read Manufacturer / Device ID Dual I/O Diagram

Note:

1. The “Continuous Read Mode” bits M7-0 must be set to FFh to be compatible with Fast Read Dual I/O instruction.

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Publication Release Date:July 21, 2015

Prelimry-Revision G

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