AT25SF641B datasheet(44/59 Pages) DIALOG

Teilenummer	AT25SF641B

Bauteilbeschribung	64-Mbit SPI Serial Flash Memory with Dual-I/O and Quad-I/O Support

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AT25SF641B

DS-AT25SF641B–191D–12-2020

12.3 Dual-I/O Read Manufacture ID/ Device ID (92h)

The Dual-I/O Read Manufacturer/Device ID instruction is an alternative to the Release from Power-Down/Device

ID instruction that provides both the JEDEC-assigned Manufacturer ID and the specific Device ID by Dual-I/O.

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. If the 24-bit address is initially set to 000001h, the Device ID is read first.

Figure 12-3. Dual-I/O Read Manufacture ID/ Device ID Sequence Diagram

Instruction

92H

753

7531

A23-16

A15-8

A7-0

Dummy

SCK

(IO0)

SCK

(IO1)

MFR ID

Device ID

MFR and Device ID

(repeat)

MFR ID (repeat)

HIGH-IMPEDANCE

Device ID (repeat)

(IO1)

(IO0)

HIGH-IMPEDANCE

AT25SF641B Datenblatt(PDF) 44 Page - Dialog Semiconductor