MT18VDDF12872DG-335F1 Micron Technology Inc, MT18VDDF12872DG-335F1 Datasheet - Page 19
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MT18VDDF12872DG-335F1
Manufacturer Part Number
MT18VDDF12872DG-335F1
Description
MODULE DDR SDRAM 1GB 184-DIMM
Manufacturer
Micron Technology Inc
Datasheet
1.MT18VDDF12872DY-335F1.pdf
(31 pages)
Specifications of MT18VDDF12872DG-335F1
Memory Type
DDR SDRAM
Memory Size
1GB
Speed
333MT/s
Package / Case
184-DIMM
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
pdf: 09005aef80f6b913, source: 09005aef80f6b41c
DDAF18C64_128x72G.fm - Rev. C 9/04 EN
22. The valid data window is derived by achieving
23. Each byte lane has a corresponding DQS.
24. This limit is actually a nominal value and does not
25. To maintain a valid level, the transitioning edge of
26. JEDEC specifies CK and CK# input slew rate must
27. DQ and DM input slew rates must not deviate
28. V
29. The clock is allowed up to ±150ps of jitter. Each
30.
31. READs and WRITEs with auto precharge are not
32. Any positive glitch must be less than 1/3 of the
33. Normal Output Drive Curves:
the DRAM controller greater than eight refresh
cycles is not allowed.
other specifications:
(
in direct porportion to the clock duty cycle and a
practical data valid window can be derived. The
clock is allowed a maximum duty cycle variation
of 45/55, beyond which functionality is uncertain.
result in a fail value. CKE is HIGH during
REFRESH command period (
CKE is LOW (i.e., during standby).
the input must:
be 1V/ns (2V/ns differentially).
from DQS by more than 10 percent. If the DQ/
DM/DQS slew rate is less than 0.5V/ns, timing
must be derated: 50ps must be added to
t
slew rate exceeds 4V/ns, functionality is uncer-
tain. For -40B, slew rates must be 0.5 V/ns.
not active while any bank is active.
timing parameter is allowed to vary by the same
amount.
t
minimum actually applied to the device CK and
CK# inputs, collectively during bank active.
allowed to be issued until
fied prior to the internal precharge command
being issued.
clock and not more than +300mV or 2.9V, which-
ever is less. Any negative glitch must be less than
1/3 of the clock cycle and not exceed either -
200mV or 2.4V, whichever is more positive.
DH for each 100mv/ns reduction in slew rate. If
HP min is the lesser of
a. Sustain a constant slew rate from the current
b. Reach at least the target AC level.
c. After the AC target level is reached, continue to
a. The full variation in driver pull-down current
t
QH =
DD
AC level through to the target AC level, V
or V
maintain at least the target DC level, V
or V
from minimum to maximum process, temper-
must not vary more than 4 percent if CKE is
t
IH
IH
HP -
(AC).
(DC).
t
QHS). The data valid window derates
t
HP (
t
t
t
CK/2),
CL minimum and
RAS (MIN) can be satis-
t
RFC [MIN]) else
t
DQSQ, and
t
DS and
IL
IL
(DC)
(AC)
t
t
QH
CH
19
512MB, 1GB (x72, ECC, SR) PC3200
160
140
120
100
-100
-120
-140
-160
-180
-200
80
60
40
20
-20
-40
-60
-80
0
0
0.0
b. The variation in driver pull-down current
c. The full variation in driver pull-up current
d. The variation in driver pull-up current within
e. The full variation in the ratio of the maximum
f. The full variation in the ratio of the nominal
Micron Technology, Inc., reserves the right to change products or specifications without notice.
0.0
184-PIN DDR SDRAM RDIMM
ature and voltage will lie within the outer
bounding lines of the V-I curve of Figure 8.
within nominal limits of voltage and tempera-
ture is expected, but not guaranteed, to lie
within the inner bounding lines of the V-I
curve of Figure 8.
from minimum to maximum process, temper-
ature and voltage will lie within the outer
bounding lines of the V-I curve of Figure 9.
nominal limits of voltage and temperature is
expected, but not guaranteed, to lie within the
inner bounding lines of the V-I curve of Figure 9.
to minimum pull-up and pull-down current
should be between 0.71 and 1.4, for device
drain-to-source voltages from 0.1V to 1.0V, and
at the same voltage and temperature.
pull-up to pull-down current should be unity
±10 percent, for device drain-to-source volt-
ages from 0.1V to 1.0V.
Figure 8: Pull-Down
0.5
0.5
Figure 9: Pull-Up
1.0
1.0
V
DD Q
V
V
OUT
OUT
- V
©2004 Micron Technology, Inc. All rights reserved.
(V)
(V)
OUT
(V)
1.5
1.5
2.0
2.0
Minimum
2.5
2.5