MT44K16M36 MICRON [Micron Technology], MT44K16M36 Datasheet - Page 50

• Manufacturer Part Number: MT44K16M36
• Description: 576Mb: x18, x36 RLDRAM 3
• Manufacturer: MICRON [Micron Technology]

Command and Address Setup, Hold, and Derating
Table 30: Command and Address Setup and Hold Values Referenced at 1 V/ns – AC/DC-Based
PDF: 09005aef84003617
576mb_rldram3.pdf – Rev. B 1/12 EN
t
t
IH(base),DC100
IS(base),AC150
Symbol
The total
sheet
ble 27 (page 43)) to the Δ
tively. Example:
signal must remain above/below V
(page 51)).
Although the total setup time for slow slew rates might be negative (for example, a valid
input signal will not have reached V
tion), a valid input signal is still required to complete the transition and to reach V
V
Table 32 (page 51) for Valid Transition, the derating values may be obtained by linear
interpolation.
Setup (
last crossing of V
for a falling signal is defined as the slew rate between the last crossing of V
the first crossing of V
rate line between the shaded V
ing value (see Figure 22 (page 52)). If the actual signal is later than the nominal slew
rate line anywhere between the shaded V
line to the actual signal from the AC level to the DC level is used for derating value (see
Figure 24 (page 54)).
Hold (
last crossing of V
for a falling signal is defined as the slew rate between the last crossing of V
the first crossing of V
rate line between the shaded DC-to-V
ing value (see Figure 23 (page 53)). If the actual signal is earlier than the nominal slew
rate line anywhere between the shaded DC-to-V
line to the actual signal from the DC level to the V
(see Figure 25 (page 55)).
IL(AC)
RL3-2133
t
t
. For slew rates which fall between the values listed in Table 31 (page 51) and
IS (base) and
IH) nominal slew rate for a rising signal is defined as the slew rate between the
t
IS) nominal slew rate for a rising signal is defined as the slew rate between the
85
65
t
IS (setup time) and
t
IS (total setup time) =
REF(DC)
IL(DC)max
Command and Address Setup, Hold, and Derating
t
IH (base) values (see Table 30 (page 50); values come from Ta-
IL(AC)max
REF(DC)
RL3-1866
and the first crossing of V
120
100
t
IS and Δ
and the first crossing of V
. If the actual signal is always later than the nominal slew
. If the actual signal is always earlier than the nominal slew
50
t
IH (hold time) required is calculated by adding the data
REF(DC)
t
IH derating values (see Table 31 (page 51)), respec-
IH(AC)
IH(AC)
RL3-1600
-to-AC region, use the nominal slew rate for derat-
REF(DC)
t
Micron Technology, Inc. reserves the right to change products or specifications without notice.
IS (base) + Δ
/V
170
120
/V
REF(DC)
IL(AC)
IL(AC)
region, use the nominal slew rate for derat-
for some time
-to-AC region, the slew rate of a tangent
REF(DC)
at the time of the rising clock transi-
IH(AC)min
REF(DC)
576Mb: x18, x36 RLDRAM 3
REF(DC)
t
IS. For a valid transition, the input
Units
region, the slew rate of a tangent
ps
ps
level is used for derating value
. Setup (
. Hold (
© 2011 Micron Technology, Inc. All rights reserved.
t
VAC (see Table 32
t
IH) nominal slew rate
t
IS) nominal slew rate
V
V
Reference
IH(AC)
IH(DC)
REF(DC)
IH(DC)min
/V
/V
IL(AC)
IL(DC)
and
IH(AC)
and
/