MT44K16M36 MICRON [Micron Technology], MT44K16M36 Datasheet - Page 56

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

Data Setup, Hold, and Derating
Table 33: Data Setup and Hold Values at 1 V/ns (DKx, DKx# at 2V/ns) – AC/DC-Based
PDF: 09005aef84003617
576mb_rldram3.pdf – Rev. B 1/12 EN
t
t
DH(base),DC100
DS(base),AC150
Symbol
The total
sheet
(page 43)) to the Δ
Example:
nal has to remain above/below V
(page 57)).
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 35 (page 57), the derating values may obtained by linear interpolation.
Setup (
last crossing of V
rate for a falling signal is defined as the slew rate between the last crossing of V
and the first crossing of V
slew rate line between the shaded V
derating value (see Figure 26 (page 58)). If the actual signal is later than the nominal
slew rate line anywhere between the shaded V
tangent line to the actual signal from the AC level to the DC level is used for derating
value (see Figure 28 (page 60)).
Hold (
last crossing of V
rate for a falling signal is defined as the slew rate between the last crossing of V
and the first crossing of V
slew rate line between the shaded DC-to-V
derating value (see Figure 27 (page 59)). If the actual signal is earlier than the nominal
slew rate line anywhere between the shaded DC-to-V
tangent line to the actual signal from the DC-to-V
ue (see Figure 29 (page 61)).
IL(AC)
RL3-2133
t
t
. For slew rates which fall between the values listed in Table 34 (page 57) and
DS (base) and
DH) nominal slew rate for a rising signal is defined as the slew rate between the
t
DS) nominal slew rate for a rising signal is defined as the slew rate between the
–30
5
t
t
DS (setup time) and
DS (total setup time) =
REF(DC)
IL(DC)max
t
DS and Δ
t
DH (base) values (see the table below; values come from Table 27
RL3-1866
and the first crossing of V
-15
20
IL(AC)max
REF(DC)
and the first crossing of V
t
DH derating values (see Table 34 (page 57)), respectively.
56
t
DH (hold time) required is calculated by adding the data
. If the actual signal is always later than the nominal
IH(AC)
t
. If the actual signal is always earlier than the nominal
DS (base) + Δ
IH(AC)
REF(DC)
RL3-1600
/V
Micron Technology, Inc. reserves the right to change products or specifications without notice.
IL(AC)
/V
10
45
-to-AC region, use the nominal slew rate for
REF(DC)
IL(AC)
Data Setup, Hold, and Derating
for some time
REF(DC)
t
DS. For a valid transition, the input sig-
) at the time of the rising clock transi-
IH(AC)min
REF(DC)
region, use the nominal slew rate for
576Mb: x18, x36 RLDRAM 3
REF(DC)
-to-AC region, the slew rate of a
REF(DC)
Units
region is used for derating val-
ps
ps
. Setup (
. Hold (
t
region, the slew rate of a
VAC (see Table 35
© 2011 Micron Technology, Inc. All rights reserved.
t
DH) nominal slew
t
DS) nominal slew
V
V
Reference
IH(AC)
IH(DC)
/V
/V
REF(DC)
IH(DC)min
IL(AC)
IL(DC)
IH
/