W631GG6KB
Note: Clock and Strobe are drawn
on a different time scale.
t IS
t IH
t IS
t IH
CK
CK#
DQS#
DQS
t DS
t DH
t DS
t DH
V DDQ
V IH(AC) min
nominal
line
V IH(DC) min
DC to V REF
region
tangent
line
V REF(DC)
V IL(DC) max
DC to V REF
region
tangent
line
nominal
line
V IL(AC) max
V SS
Δ TR
Δ TF
Hold Slew Rate
Rising Signal
=
tangent line [V REF(DC) - V IL(DC) max]
Δ TR
Hold Slew Rate
Falling Signal =
tangent line [V IH(DC) min - V REF(DC) ]
Δ TF
Figure 110 – Illustration of tangent line for for hold time t DH (for DQ with respect to strobe) and
t IH (for ADD/CMD with respect to clock)
Publication Release Date: Dec. 09, 2013
Revision A05
- 155 -
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