H5DU2562GFR-XXI View Datasheet(PDF) - Hynix Semiconductor

Part Name

Description

Manufacturer

H5DU2562GFR-XXI

256Mb DDR SDRAM

Hynix Semiconductor 

H5DU2562GFR-xxI

WRITE MASK TRUTH TABLE

Function

Data Write1

Data-In Mask1

CKEn-1 CKEn

H

X

H

X

/CS, /RAS,

/CAS, /WE

X

X

DM

ADDR A10/AP BA

L

X

H

X

Note:

1. Write Mask command masks burst write data with reference to LDQS/UDQS(Data Strobes) and it is not related with read data.

In case of x16 data I/O, LDM and UDM control lower byte(DQ0~7) and Upper byte(DQ8~15) respectively.

Rev. 1.1 /Sep. 2007

8

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