HY5DU28422BT Datasheet, PDF (9/33 Pages) Hynix Semiconductor – 128M-S DDR SDRAM

HY5DU28422B(L)T
HY5DU28822B(L)T
WRITE MASK TRUTH TABLE
Function
Data Write
Data-In Mask
CKEn-1 CKEn /CS, /RAS, /CAS, /WE
DM
ADDR A10/AP
BA Note
H
X
X
L
H
X
X
H
X
1
X
1
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. 0.3/May. 02
9