W631GG6KB View Datasheet(PDF) - Winbond

Part Name

Description

Manufacturer

W631GG6KB

1G bits DDR3 SDRAM, organized as 8,388,608 words x 8 banks x 16 bits.

Winbond 

W631GG6KB

7.13.2 READ Timing Definitions

Read timing is shown in Figure 23 and is applied when the DLL is enabled and locked.

Rising data strobe edge parameters:

 tDQSCK min/max describes the allowed range for a rising data strobe edge relative to CK, CK#.

 tDQSCK is the actual position of a rising strobe edge relative to CK, CK#.

 tQSH describes the DQS, DQS# differential output high time.

 tDQSQ describes the latest valid transition of the associated DQ pins.

 tQH describes the earliest invalid transition of the associated DQ pins.

Falling data strobe edge parameters:

 tQSL describes the DQS, DQS# differential output low time.

 tDQSQ describes the latest valid transition of the associated DQ pins.

 tQH describes the earliest invalid transition of the associated DQ pins.

tDQSQ; both rising/falling edges of DQS, no tAC defined.

CK#

CK

tDQSCK(min)

tDQSCK(min)

tDQSCK(max)

tDQSCK(max)

Rising Strobe

Region

tDQSCK

tQSH

DQS#

Rising Strobe

Region

tDQSCK

tQSL

DQS

tQH

tDQSQ

tQH

tDQSQ

Associated

DQ Pins

Figure 23 – READ Timing Definition

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Publication Release Date: Feb. 27, 2013

Revision A04

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