IS66/67WVS2M8ALL/BLL

Integrated Silicon Solution, Inc.- www.issi.com

4

Rev. A1

11/13/2023

TABLE OF CONTENTS

FEATURES ............................................................................................................................................................2

GENERAL DESCRIPTION ....................................................................................................................................3

PERFORMANCE SUMMARY................................................................................................................................3

TABLE OF CONTENTS .........................................................................................................................................4

1.

PIN CONFIGURATION & Descriptions ..........................................................................................................5

2.

Block Diagram.................................................................................................................................................7

3.

Power-up Initialization.....................................................................................................................................8

4.

Interface Description .......................................................................................................................................9

4.1

Address Space.......................................................................................................................................9

4.2

Page Length...........................................................................................................................................9

4.3

DriveR Strength .....................................................................................................................................9

4.4

POWER-ON STATUS ...........................................................................................................................9

4.5

Command/Address Latching Truth ........................................................................................................9

4.6

READ/WRITE Termination ..................................................................................................................10

5.

READ/WRITE OPERATIONS.......................................................................................................................11

5.1

SPI READ OPERATIONS ...................................................................................................................11

5.2

SPI WRITE OPERATIONS ..................................................................................................................13

5.3

QPI MODE ...........................................................................................................................................14

5.4

QPI Fast READ Operation ...................................................................................................................15

5.5

QPI WRITE Operation .........................................................................................................................16

5.6

QPI EXIT Operation .............................................................................................................................16

5.7

SPI Read ID Operation ........................................................................................................................17

5.8

RESET Operation ................................................................................................................................18

5.9

Set Burst Length Operation .................................................................................................................19

6.

REGISTER....................................................................................................................................................24

6.1 DEVICE IDENTIFICATION REGISTER .................................................................................................24

7.

ELECTRICAL CHARACTERISTICS.............................................................................................................25

7.1

ABSOLUTE MAXIMUM RATINGS (1) ..................................................................................................25

7.2

OPERATING RANGE ..........................................................................................................................25

7.3

DC CHARACTERISTICS.....................................................................................................................26

7.4

AC Measurement Conditions ...............................................................................................................27

7.5

PIN CAPACITANCE (TA = 25°C, VCC=1.8V/ 3V, 1MHz) ...................................................................27

7.6

AC CHARACTERISTICS .....................................................................................................................28

7.7

INPUT/OUTPUT TIMING.....................................................................................................................29

8.

PACKAGE TYPE INFORMATION................................................................................................................30

8.1

8- Contact Ultra-Thin Small Outline No-Lead (WSON) PACKAGE 6X5MM (K)..................................30

8.2

8-Pin JEDEC 150mil Broad Small Outline Integrated Circuit (SOIC) Package (N) .............................32

9.

ORDERING INFORMATION

– Valid Part Numbers.....................................................................................35