W9751G6KB-25 datasheet(2/87 Pages) WINBOND

Part #	W9751G6KB-25

Description	Double Data Rate architecture: two data transfers per clock cycle

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Manufacturer	WINBOND [Winbond]

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W9751G6KB

Publication Release Date: Sep. 03, 2012

- 2 -

Revision A04

8.4.1.1

Examples of posted CAS operation......................................................................23

8.4.2

Burst mode operation.......................................................................................................24

8.4.3

Burst read mode operation...............................................................................................25

8.4.4

Burst write mode operation ..............................................................................................25

8.4.5

Write data mask ...............................................................................................................26

8.5

Burst Interrupt .....................................................................................................................................26

8.6

Precharge operation............................................................................................................................27

8.6.1

Burst read operation followed by precharge.....................................................................27

8.6.2

Burst write operation followed by precharge ....................................................................27

8.7

Auto-precharge operation ...................................................................................................................27

8.7.1

Burst read with Auto-precharge........................................................................................28

8.7.2

Burst write with Auto-precharge .......................................................................................28

8.8

Refresh Operation...............................................................................................................................29

8.9

Power Down Mode..............................................................................................................................29

8.9.1

Power Down Entry ...........................................................................................................30

8.9.2

Power Down Exit..............................................................................................................30

8.10

Input clock frequency change during precharge power down .............................................................30

9.

OPERATION MODE ...........................................................................................................................31

9.1

Command Truth Table ........................................................................................................................31

9.2

Clock Enable (CKE) Truth Table for Synchronous Transitions............................................................32

9.3

Data Mask (DM) Truth Table...............................................................................................................32

9.4

Function Truth Table ...........................................................................................................................33

9.5

Simplified Stated Diagram...................................................................................................................36

10.

ELECTRICAL CHARACTERISTICS ...................................................................................................37

10.1

Absolute Maximum Ratings.................................................................................................................37

10.2

Operating Temperature Condition.......................................................................................................37

10.3

Recommended DC Operating Conditions ...........................................................................................38

10.4

ODT DC Electrical Characteristics ......................................................................................................38

10.5

Input DC Logic Level...........................................................................................................................38

10.6

Input AC Logic Level ...........................................................................................................................38

10.7

Capacitance ........................................................................................................................................39

10.8

Leakage and Output Buffer Characteristics ........................................................................................39

10.9

DC Characteristics ..............................................................................................................................40

10.10

IDD Measurement Test Parameters ..........................................................................................42

10.11

AC Characteristics .....................................................................................................................43

10.11.1

AC Characteristics and Operating Condition for -18 speed grade ...................................43

10.11.2

AC Characteristics and Operating Condition for -25/25I/25A/25K/-3 speed grade...........45

10.12

AC Input Test Conditions...........................................................................................................66

10.13

Differential Input/Output AC Logic Levels ..................................................................................66

10.14

AC Overshoot / Undershoot Specification .................................................................................67

10.14.1

AC Overshoot / Undershoot Specification for Address and Control Pins: ........................67

10.14.2

AC Overshoot / Undershoot Specification for Clock, Data, Strobe and Mask pins:..........67

11.

TIMING WAVEFORMS .......................................................................................................................68

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