MT41J256M8DA-125:H Micron Technology Inc, MT41J256M8DA-125:H Datasheet - Page 20
MT41J256M8DA-125:H
Manufacturer Part Number
MT41J256M8DA-125:H
Description
Manufacturer
Micron Technology Inc
Datasheet
1.MT41J256M8DA-125H.pdf
(210 pages)
Specifications of MT41J256M8DA-125:H
Lead Free Status / Rohs Status
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Table 3: 78-Ball FBGA – x4, x8 Ball Descriptions (Continued)
PDF: 09005aef826aaadc
2Gb_DDR3_SDRAM.pdf – Rev. K 04/10 EN
TDQS, TDQS#
DQS, DQS#
Symbol
DQ[3:0]
DQ[7:0]
V
V
V
V
V
REFDQ
REFCA
V
ZQ
NC
NF
DDQ
SSQ
DD
SS
Reference
Output
Supply
Supply
Supply
Supply
Supply
Supply
Type
I/O
I/O
I/O
–
–
Description
Data input/output: Bidirectional data bus for the x4 configuration. DQ[3:0] are
referenced to V
Data input/output: Bidirectional data bus for the x8 configuration. DQ[7:0] are
referenced to V
Data strobe: Output with read data. Edge-aligned with read data. Input with write
data. Center-aligned to write data.
Termination data strobe: Applies to the x8 configuration only. When TDQS is
enabled, DM is disabled, and the TDQS and TDQS# balls provide termination
resistance.
Power supply: 1.5V ±0.075V.
DQ power supply: 1.5V ±0.075V. Isolated on the device for improved noise immunity.
Reference voltage for control, command, and address: V
maintained at all times (including self refresh) for proper device operation.
Reference voltage for data: V
maintained at all times (excluding self refresh) for proper device operation.
Ground.
DQ ground: Isolated on the device for improved noise immunity.
External reference ball for output drive calibration: This ball is tied to an
external 240Ω resistor (RZQ), which is tied to V
No connect: These balls should be left unconnected (the ball has no connection to
the DRAM or to other balls).
No function: When configured as a x4 device, these balls are NF. When configured
as a x8 device, these balls are defined as TDQS#, DQ[7:4].
REFDQ
REFDQ
.
.
20
REFDQ
Micron Technology, Inc. reserves the right to change products or specifications without notice.
Ball Assignments and Descriptions
must be
2Gb: x4, x8, x16 DDR3 SDRAM
SSQ
.
© 2006 Micron Technology, Inc. All rights reserved.
REFCA
must be
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