W9751G6JB-25 Winbond Electronics, W9751G6JB-25 Datasheet - Page 50

• Manufacturer Part Number: W9751G6JB-25
• Description: IC DDR2-800 SDRAM 512MB 84WBGA
• Manufacturer: Winbond Electronics

Specifications of W9751G6JB-25

• Format - Memory: RAM
• Memory Type: DDR2 SDRAM
• Memory Size: 512M (32Mx16)
• 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
• Other names: Q5606783

25. New units, ‘tCK(avg)’ and ‘nCK’, are introduced in DDR2-667, DDR2-800.
26. These parameters are measured from a command/address signal (CKE, CS , RAS , CAS , WE , ODT, BA0, A0, A1, etc.)
27. If tDS or tDH is violated, data corruption may occur and the data must be re-written with valid data before a valid READ can
28. These parameters are measured from a data strobe signal ((L/U)DQS/ DQS ) crossing to its respective clock signal
29. These parameters are measured from a data signal ((L/U)DM, (L/U)DQ0, (L/U)DQ1, etc.) transition edge to its respective
transition edge to its respective clock signal (CLK/ CLK ) crossing. The spec values are not affected by the amount of clock
jitter applied (i.e. tJIT(per), tJIT(cc), etc.), as the setup and hold are relative to the clock signal crossing that latches the
command/address. That is, these parameters should be met whether clock jitter is present or not.
be executed.
(CLK/ CLK ) crossing. The spec values are not affected by the amount of clock jitter applied (i.e. tJIT(per), tJIT(cc), etc.), as
these are relative to the clock signal crossing. That is, these parameters should be met whether clock jitter is present or not.
data strobe signal ((L/U)DQS/ DQS ) crossing.
Unit ‘tCK(avg)’ represents the actual tCK(avg) of the input clock under operation.
Unit ‘nCK’ represents one clock cycle of the input clock, counting the actual clock edges.
Examples:
For DDR2-667/800: tXP = 2 [nCK] means; if Power Down exit is registered at Tm, an Active command may be
registered at Tm+2, even if (Tm+2 - Tm) is 2 x tCK(avg) + tERR(2per),min.
For DDR2-1066: tXP = 3 [nCK] means; if Power Down exit is registered at Tm, an Active command may be
registered at Tm+3, even if (Tm+3 - Tm) is 3 x tCK(avg) + tERR(3per),min.
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Publication Release Date: Aug. 03, 2010
W9751G6JB
Revision A04