HYB18T512160A Infineon Technologies AG, HYB18T512160A Datasheet - Page 85

• Manufacturer Part Number: HYB18T512160A
• Description: 512-Mbit Double-Data-Rate-Two SDRAM
• Manufacturer: Infineon Technologies AG

Figure 69
8.3.3
Setup (
defined as the slew rate between the last crossing of
V
nominal slew rate for a falling signal is defined as the
slew rate between the last crossing of
first crossing of
earlier than the nominal slew rate line between shaded
‘
value.(Figure
If the actual signal is later than the nominal slew rate
line anywhere between shaded ‘
the slew rate of a tangent line to the actual signal from
the ac level to dc level is used for derating value.
(Figure
Data Sheet
V
REF(dc)
REF(dc)
t
and the first crossing of
DS
to ac region’, use nominal slew rate for derating
71)
) nominal slew rate for a rising signal is
Data, Setup and Hold Time Diagram
Slew Rate Definition for Input and Data Setup and Hold Times
70)
V
IL(ac)max
. If the actual signal is always
DQS
DQS
DQS
V
V
IH(ac)min
Reference Loads, Setup & Hold Timing Definition and Slew Rate Derating
REF(dc)
t
DS
V
REF(dc)
. Setup (
to ac region’,
t
DH
and the
t
DS
t
DS
)
t
DH
85
Hold (
as the slew rate between the last crossing of
and the first crossing of
rate for a falling signal is defined as the slew rate
between the last crossing of
crossing of
than the nominal slew rate line between shaded ‘dc
level to
derating value.
If the actual signal is earlier than the nominal slew rate
line anywhere between shaded ‘dc to
the slew rate of a tangent line to the actual signal from
the dc level to
value.(Figure
512-Mbit Double-Data-Rate-Two SDRAM
HYB18T512[400/800/160]A[C/F]–[3.7/5]
t
DH
V
) nominal slew rate for a rising signal is defined
V
V
V
V
V
V
V
V
REF(dc)
Differential Input
Single-ended Input
REF
DDQ
IH(ac)
IH(dc)
REF
IL(dc)
IL(ac)
SS
V
Waveform
Waveform
REF(dc)
max
max
min
min
73)
V
(Figure
region’, use nominal slew rate for
REF(dc)
. If the actual signal is always later
level is used for derating
V
72)
REF(dc)
V
IH(dc)min
. Hold (
09112003-SDM9-IQ3P
Rev. 1.13, 2004-05
t
and the first
DH
V
REF(dc)
) nominal slew
V
region’,
IL(dc)max