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W9725G6IB
7.4.2
7.4.3
7.4.4
7.4.5
Burst mode operation.......................................................................................................24
Burst read mode operation...............................................................................................25
Burst write mode operation ..............................................................................................25
Write data mask ...............................................................................................................26
7.5
7.6
Burst Interrupt .....................................................................................................................................26
Precharge operation............................................................................................................................27
7.6.1
7.6.2
Burst read operation followed by precharge.....................................................................27
Burst write operation followed by precharge ....................................................................27
7.7
Auto-precharge operation ...................................................................................................................27
7.7.1
7.7.2
Burst read with Auto-precharge........................................................................................28
Burst write with Auto-precharge .......................................................................................28
7.8
7.9
Refresh Operation...............................................................................................................................29
Power Down Mode..............................................................................................................................29
7.9.1
7.9.2
Power Down Entry ...........................................................................................................30
Power Down Exit..............................................................................................................30
8.
9.
7.10
8.1
8.2
8.3
8.4
8.5
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
Input clock frequency change during precharge power down .............................................................30
OPERATION MODE ...........................................................................................................................31
Command Truth Table ........................................................................................................................31
Clock Enable (CKE) Truth Table for Synchronous Transitions............................................................32
Data Mask (DM) Truth Table...............................................................................................................32
Function Truth Table ...........................................................................................................................33
Simplified Stated Diagram...................................................................................................................36
ELECTRICAL CHARACTERISTICS ...................................................................................................37
Absolute Maximum Ratings.................................................................................................................37
Operating Temperature Condition.......................................................................................................37
Recommended DC Operating Conditions ...........................................................................................37
ODT DC Electrical Characteristics ......................................................................................................38
Input DC Logic Level...........................................................................................................................38
Input AC Logic Level ...........................................................................................................................38
Capacitance ........................................................................................................................................39
Leakage and Output Buffer Characteristics ........................................................................................39
DC Characteristics ..............................................................................................................................40
9.9.1
DC Characteristics for -25/-3 speed grades .....................................................................40
9.10
9.11
9.12
9.13
9.14
IDD Measurement Test Parameters....................................................................................................42
AC Characteristics ..............................................................................................................................43
AC Input Test Conditions ....................................................................................................................63
Differential Input/Output AC Logic Levels ...........................................................................................63
AC Overshoot / Undershoot Specification ...........................................................................................64
9.14.1
9.14.2
AC Overshoot / Undershoot Specification for Address and Control Pins: ........................64
AC Overshoot / Undershoot Specification for Clock, Data, Strobe and Mask pins:..........64
10.
10.1
10.2
TIMING WAVEFORMS .......................................................................................................................65
Command Input Timing.......................................................................................................................65
Timing of the CLK Signals...................................................................................................................65
Publication Release Date: Oct. 23, 2009
-2-
Revision A04
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