MT41J128M8HX-15E:D TR Micron Technology Inc, MT41J128M8HX-15E:D TR Datasheet - Page 101
MT41J128M8HX-15E:D TR
Manufacturer Part Number
MT41J128M8HX-15E:D TR
Description
IC DDR3 SDRAM 1GBIT 78FBGA
Manufacturer
Micron Technology Inc
Datasheet
1.MT41J64M16LA-187EB_TR.pdf
(181 pages)
Specifications of MT41J128M8HX-15E:D TR
Format - Memory
RAM
Memory Type
DDR3 SDRAM
Memory Size
1G (128M x 8)
Speed
667MHz
Interface
Parallel
Voltage - Supply
1.425 V ~ 1.575 V
Operating Temperature
0°C ~ 95°C
Package / Case
78-FBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
557-1376-2
- Current page: 101 of 181
- Download datasheet (9Mb)
Write Leveling
Figure 48: Write Leveling Concept
PDF: 09005aef826aa906/Source: 09005aef82a357c3
1Gb_DDR3_4.fm - Rev. F 11/08 EN
Destination
Source
Destination
Differential DQS
Differential DQS
Differential DQS
CK#
CK#
CK#
DQ
DQ
CK
CK
CK
Tn
Tn
T0
Push DQS to capture
For better signal integrity, DDR3 SDRAM memory modules adopted fly-by topology for
the commands, addresses, control signals, and clocks. Write leveling is a scheme for the
memory controller to adjust or deskew the DQS strobe (DQS, DQS#) to CK relationship
at the DRAM with a simple feedback feature provided by the DRAM. Write leveling is
generally used as part of the initialization process, if required. For normal DRAM opera-
tion, this feature must be disabled. This is the only DRAM operation where the DQS
functions as an input (to capture the incoming clock) and the DQ function as outputs (to
report the state of the clock). Note that nonstandard ODT schemes are required.
The memory controller using the write leveling procedure must have adjustable delay
settings on its DQS strobe to align the rising edge of DQS to the clock at the DRAM pins.
This is accomplished when the DRAM asynchronously feeds back the CK status via the
DQ bus and samples with the rising edge of DQS. The controller repeatedly delays the
DQS strobe until a CK transition from “0” to “1” is detected. The DQS delay established
through this procedure helps ensure
that use fly-by topology by deskewing the trace length mismatch. A conceptual timing of
this procedure is shown in Figure 48.
0–1 transition
T0
T0
T1
T1
T1
T2
0
101
T2
T2
1
T3
t
DQSS,
Micron Technology, Inc., reserves the right to change products or specifications without notice.
T3
T3
t
T4
DSS, and
1Gb: x4, x8, x16 DDR3 SDRAM
0
T4
T4
t
DSH specifications in systems
1
T5
©2006 Micron Technology, Inc. All rights reserved.
T5
T5
T6
Commands
Don’t Care
T6
T6
T7
Related parts for MT41J128M8HX-15E:D TR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
IC DDR3 SDRAM 1GBIT 78FBGA
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 64MBIT 133MHZ 54TSOP
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 64MBIT 5.5NS 86TSOP
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 64MBIT 200MHZ 86TSOP
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 64MBIT 133MHZ 54TSOP
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 128MBIT 133MHZ 54TSOP
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 256MBIT 133MHZ 90VFBGA
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 128MBIT 133MHZ 54TSOP
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 256MBIT 133MHZ 54TSOP
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC DDR SDRAM 512MBIT 6NS 66TSOP
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 128MBIT 167MHZ 86TSOP
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 128MBIT 143MHZ 86TSOP
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
SDRAM 256M-BIT 1.8V 54-PIN VFBGA
Manufacturer:
Micron Technology Inc
Datasheet:
Part Number:
Description:
IC SDRAM 128MBIT 143MHZ 86TSOP
Manufacturer:
Micron Technology Inc
Datasheet: