Datasheet

ManualsBrandsDIGILENT ManualsDev Kits410-340

READ IDENTIFICATION Operations

READ ID and MULTIPLE I/O READ ID Commands

To execute the READ ID or MULTIPLE I/O READ ID commands, S# is driven LOW and

the command code is input on DQn. The device outputs the information shown in the

tables below. If an ERASE or PROGRAM cycle is in progress when the command is exe-

cuted, the command is not decoded and the command cycle in progress is not affected.

When S# is driven HIGH, the device goes to standby. The operation is terminated by

driving S# HIGH at any time during data output.

Table 20: Data/Address Lines for READ ID and MULTIPLE I/O READ ID Commands

Command Name Data In Data Out

Unique ID

is Output Extended Dual Quad

READ ID DQ0 DQ0 Yes Yes No No

MULTIPLE I/O READ ID DQ[3:0] DQ[1:0] No No Yes Yes

Note:

1. Yes in the protocol columns indicates that the command is supported and has the same

functionality and command sequence as other commands marked Yes.

Table 21: Read ID Data Out

Size

(Bytes) Name Content Value Assigned by

1 Manufacturer ID 20h (selected by READ

MANUFACTURER ID)

JEDEC

2 Device ID

Memory Type BAh Manufacturer

Memory Capacity 19h (256Mb)

17 Unique ID

1 Byte: Length of data to follow 10h Factory

2 Bytes: Extended device ID and device

configuration information

ID and information such as uniform

architecture, and HOLD

or RESET functionality

14 Bytes: Customized factory data Optional

Note:

1. The 17 bytes of information in the unique ID is read by the READ ID command, but can-

not be read by the MULTIPLE I/O READ ID command.

Table 22: Extended Device ID, First Byte

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Reserved Reserved 1 = Alternate BP

scheme

0 = Standard BP

scheme

Volatile configuration

0 = Required

1 = Not required

HOLD#/RESET#:

0 = HOLD

1 = RESET

Addressing:

0 = by byte

Architecture:

00 = Uniform

3V, 256Mb: Multiple I/O Serial Flash Memory

READ IDENTIFICATION Operations

09005aef84566603

n25q_256mb_65nm.pdf - Rev. W 11/16 EN

Micron Technology, Inc. reserves the right to change products or specifications without notice.