K3S7V2000M-TC Datasheet, PDF(12/27 Page) Samsung semiconductor – 64M-Bit (4Mx16 /2Mx32) Synchronous MASKROM

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K3S7V2000M-TC Datasheet, PDF (12/27 Pages) Samsung semiconductor – 64M-Bit (4Mx16 /2Mx32) Synchronous MASKROM

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K3S7V2000M-TC

4. DQM Operation

1) Read Mask (BL=4)

CLK

CMD

DQM

Data(CL2)

Data(CL3)

Data(CL4)

Masked by DQM

Hi-Z

Q0 Q1

Hi-Z

Q2 Q3

Hi-Z

2) DQM with Clock Suspended (BL=8)

CLK

CMD RD

CKE

DQM

Data(CL2)

Data(CL3)

Data(CL4)

Note 1

Q0 D1 Q1

DQM to Data-out Mask = 2CLKs

Hi-Z

Synch. MROM

Hi-Z

Q7 Q8

Hi-Z

Q6 Q7 Q8

Hi-Z

Q5 Q6 Q7

*Note :

1. DQM makes data out Hi-Z after 2CLKs which should masked by CKE " L"

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