HY5DU12422BT_06 Datasheet, PDF (10/31 Pages) Hynix Semiconductor – 512Mb DDR SDRAM

1HY5DU12422B(L)T
HY5DU12822B(L)T
HY5DU121622B(L)T
WRITE MASK TRUTH TABLE
Function
CKEn-1 CKEn
/CS, /RAS,
/CAS, /WE
DM
ADDR
A10/
AP
BA
Data Write¹
Data-In Mask¹
H
X
X
L
X
H
X
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 / Apr. 2006
10