MT49H16M18CBM-25 Micron Technology Inc, MT49H16M18CBM-25 Datasheet - Page 34

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MT49H16M18CBM-25

Manufacturer Part Number
MT49H16M18CBM-25
Description
Manufacturer
Micron Technology Inc
Type
RLDRAMr
Datasheet

Specifications of MT49H16M18CBM-25

Organization
16Mx18
Density
288Mb
Address Bus
23b
Maximum Clock Rate
400MHz
Operating Supply Voltage (typ)
1.8V
Package Type
uBGA
Operating Temp Range
0C to 95C
Operating Supply Voltage (max)
1.9V
Operating Supply Voltage (min)
1.7V
Supply Current
779mA
Pin Count
144
Mounting
Surface Mount
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Compliant

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MT49H16M18CBM-25
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WRITE
Figure 13:
PDF: 09005aef815b2df8/Source: 09005aef811ba111
288Mb_RLDRAM_II_SIO_Core2.fm - Rev. O 1/11 EN
WRITE Command
Write accesses are initiated with a WRITE command, as shown in Figure 13. The address
needs to be provided during the WRITE command.
During WRITE commands, data will be registered at both edges of DK according to the
programmed burst length (BL). The RLDRAM operates with a WRITE latency (WL) that
is one cycle longer than the programmed READ latency (RL + 1), with the first valid data
registered at the first rising DK edge WL cycles after the WRITE command.
Since the input and output data busses are separate, any WRITE burst may be followed
by a subsequent READ command without encountering external data bus contention.
Figure 20 on page 45 illustrates the timing requirements for a WRITE followed by a READ
command.
Setup and hold times for incoming D relative to the DK edges are specified as
t
hold times for the DM signal are also
ADDRESS
ADDRESS
DH. The input data is masked if the corresponding DM signal is HIGH. The setup and
BANK
WE#
REF#
CK#
CS#
CK
DON’T CARE
BA
A
288Mb: x18 2.5V V
37
t
DS and
Micron Technology, Inc., reserves the right to change products or specifications without notice.
EXT
t
, 1.8V V
DH.
DD
, HSTL, SIO, RLDRAM II
©2003Micron Technology, Inc. All rights reserved.
Commands
t
DS and

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