K4Y50164UC Datasheet, PDF (67/76 Pages) Samsung semiconductor – 512Mbit XDR TM DRAM(C-die)

K4Y50164UC
K4Y50084UC
K4Y50044UC
K4Y50024UC
XDR^TM DRAM
Figure 60 : RSL DQ Transmit Waveforms
t_CYCLE
CFM
...
CFMN
t_QOFF,MAX
t_QOFF,MIN
i = {0,1,2,3,4,5,...15}
j = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}
DQ0
DQN0
DQi
DQni
DQ15
DQN15
[(j+0.5)/8]•t_CYCLE
t_QOFF,DQ0
[(j-0.5)/8]•t_CYCLE
t_Q,DQ,MAX
t_Q,DQ,MIN
logic “1”
V_OH,DQ
80%
0
1
2
3
4
6
7
8 ^...
j
... _{14 15}
t_OR,DQ
t_OF,DQ
20%
V_OL,DQ
logic “0”
[(j+0.5)/8]•t_CYCLE
[(j-0.5)/8]•t_CYCLE
t_Q,DQ,MAX
t_Q,DQ,MIN
t_QOFF,DQi
0
1
2
3
4
5
6
7 ^...
j
... _{14 15}
[(j+0.5)/8]•t_CYCLE
t_OR,DQ
t_OF,DQ
logic “1”
V_OH,DQ
80%
20%
V_OL,DQ
logic “0”
[(j-0.5)/8]•t_CYCLE
t_Q,DQ,MAX
t_Q,DQ,MIN
t_QOFF,DQ15
0
1
2
3
4
5
6
7 ^...
j
... _{14 15}
t_OR,DQ
t_OF,DQ
logic “1”
V_OH,DQ
80%
20%
V_OL,DQ
logic “0”
67 of 76
Rev. 1.1 August 2006