參數(shù)資料
型號(hào): HYB18T512160AF-3
廠商: INFINEON TECHNOLOGIES AG
英文描述: 512-Mbit DDR2 SDRAM
中文描述: 512兆位DDR2 SDRAM的
文件頁(yè)數(shù): 108/117頁(yè)
文件大?。?/td> 2102K
代理商: HYB18T512160AF-3
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HYB18T512[40/80/16]0AF–[3/3S/3.7/5]
512-Mbit DDR2 SDRAM
AC Timing Measurement Conditions
Data Sheet
108
Rev. 1.3, 2005-01
09112003-SDM9-IQ3P
8.3.4
Setup (
t
IS
&
t
DS
) nominal Slew Rate for a rising signal is
defined as the Slew Rate between the last crossing of
V
REF(dc)
and the first crossing of
V
IH(ac).MIN
. Setup (
t
IS
&
t
DS
) nominal Slew Rate for a falling signal is defined as
the Slew Rate between the last crossing of
V
REF(dc)
and
the first crossing of
V
IL(ac).MAX
. If the actual signal is
always earlier than the nominal Slew Rate line between
shaded ‘
V
REF(dc)
to ac region’, use nominal Slew Rate
for derating value (see
Figure 76
). If the actual signal
is later than the nominal Slew Rate line anywhere
between shaded ‘
V
REF(dc)
to ac region’, the Slew Rate of
a tangent line to the actual signal from the ac level to dc
Slew Rate Definition for Input and Data Setup and Hold Times
level is used for derating value.(see
Figure 77
) Hold
(
t
IH
&
t
DH
) nominal Slew Rate for a rising signal is
defined as the Slew Rate between the last crossing of
V
IL(dc).MAX
and the first crossing of
V
REF(dc)
. Hold (
t
IH
&
t
DH
) nominal Slew Rate for a falling signal is defined as
the Slew Rate between the last crossing of
V
IH(dc).MIN
and the first crossing of
V
REF(dc)
. If the actual signal is
always later than the nominal Slew Rate line between
shaded ‘dc to
V
REF
region’, use nominal Slew Rate for
derating value (see
Figure 76
). If the actual signal is
earlier than the actual signal from the dc level to
V
REF
level is used for derating value (see
Figure 77
)
Figure 76
Slew Rate Definition Nominal
3ETUP 3LEW 2ATE
62%&D C
6), AC MAX
$ELTA 4&3
FALLING SIGNAL
3ETUP 3LEW 2ATE
6)( AC MIN 62%& DC
$ELTA 423
RISING SIGNAL
(O LD 3LEW 2ATE
62%& DC
6), DC MAX
$ELTA 42(
RISING SIGNAL
(OLD3 LEW 2ATE
6)( DC MIN 62%& DC
$ELTA 4&(
FALLING SIGNAL
6
33
6
), AC
MAX
6
), DC
MAX
6
2%&
6
)( DC
MIN
6
$$1
6
)( AC
MIN
$ELTA 4&3
$ELTA 42(
$E LTA 4&(
$ELTA 423
DC TO 62% &
REGION
62% & TO AC
REGION
DC TO 62%&
REGION
62% & TO AC
REGION
#+ #+ FOR T)3 AND T)(
$13 $13 FOR T$3 AND T$(
T
)3
T
$3
T
)(
T
$(
T
)3
T
$3
T
)(
T
$(
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