W9725G6IB-25 Winbond Electronics, W9725G6IB-25 Datasheet - Page 2

• Manufacturer Part Number: W9725G6IB-25
• Description: IC DDR2-800 SDRAM 256MB 84-WBGA
• Manufacturer: Winbond Electronics

Specifications of W9725G6IB-25

• Format - Memory: RAM
• Memory Type: DDR2 SDRAM
• Memory Size: 256M (16Mx16)
• Speed: 2.5ns
• Interface: Parallel
• Voltage - Supply: 1.7 V ~ 1.9 V
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 84-WBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.
9.
10.
7.5
7.6
7.7
7.8
7.9
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
9.10
9.11
9.12
9.13
9.14
10.1
10.2
7.4.2
7.4.3
7.4.4
7.4.5
7.6.1
7.6.2
7.7.1
7.7.2
7.9.1
7.9.2
9.9.1
9.14.1
9.14.2
Burst Interrupt .....................................................................................................................................26
Precharge operation............................................................................................................................27
Auto-precharge operation ...................................................................................................................27
Refresh Operation...............................................................................................................................29
Power Down Mode..............................................................................................................................29
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
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
TIMING WAVEFORMS .......................................................................................................................65
Command Input Timing.......................................................................................................................65
Timing of the CLK Signals...................................................................................................................65
Burst mode operation.......................................................................................................24
Burst read mode operation...............................................................................................25
Burst write mode operation ..............................................................................................25
Write data mask ...............................................................................................................26
Burst read operation followed by precharge.....................................................................27
Burst write operation followed by precharge ....................................................................27
Burst read with Auto-precharge........................................................................................28
Burst write with Auto-precharge .......................................................................................28
Power Down Entry ...........................................................................................................30
Power Down Exit..............................................................................................................30
DC Characteristics for -25/-3 speed grades .....................................................................40
AC Overshoot / Undershoot Specification for Address and Control Pins: ........................64
AC Overshoot / Undershoot Specification for Clock, Data, Strobe and Mask pins:..........64
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Publication Release Date: Oct. 23, 2009
W9725G6IB
Revision A04