W942508CH Datasheet, PDF(40/47 Page) Winbond – 8M x 4 BANKS x 8 BIT DDR SDRAM

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W942508CH Datasheet, PDF (40/47 Pages) Winbond – 8M x 4 BANKS x 8 BIT DDR SDRAM

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W942508CH

Timing Waveforms, continued

10.15 Write Interrupted by Write (BL = 2, 4, 8)

CLK

CMD

ADD

ACT

Row

Address

tRCD

WRIT A

WRIT B

WRIT C

WRIT D

WRIT E

tCCD

COl. Add. A

Col.Add.B

Col. Add. C

Col. Add. D

Col. Add. E

DQS

DA0 DA1 DB0 DB1 DC0 DC1 DD0 DD1

10.16 Write Interrupted by Read (CL = 2, BL = 8)

CLK

CMD

WRIT

READ

DQS

tWTR

D0 D1 D2 D3 D4 D5 D6 D7

Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7

Data must be

masked by DM

Data masked by READ

command, DQS input ignored.

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