1HY5DU561622FTP-5
HY5DU561622FTP-4
WRITE MASK TRUTH TABLE
A10/
AP
Function
Data Write
CKEn-1
CKEn
/CS, /RAS, /CAS, /WE
LDM
UDM
ADDR
BA
Note
H
H
X
X
X
X
L
L
X
X
1,2
1,2
Data-In Mask
H
H
Lower Byte Write /
Upper Byte-In Mask
H
H
X
X
X
X
L
H
L
X
X
1,2
1,2
Upper Byte Write /
Lower Byte-In Mask
H
Note :
1. Write Mask command masks burst write data with reference to LDQS/UDQS(Data Strobes) and it is not related with read data.
2. LDM and UDM control lower byte(DQ0~7) and Upper byte(DQ8~15) respectively.
Rev. 1.1 / Mar. 2008
8