MT47H64M16HR-25E AIT:H Micron, MT47H64M16HR-25E AIT:H Datasheet - Page 16

• Manufacturer Part Number: MT47H64M16HR-25E AIT:H
• Description: Ic Ddr2 Sdram 1gbit 84fbga
• Manufacturer: Micron

Table 3: FBGA 84-Ball – x16 and 60-Ball – x8 Descriptions (Continued)
PDF: 09005aef840eff89
1gbddr2_ait_aat.pdf – Rev. C 7/11 EN
UDQS, UDQS#
RDQS, RDQS#
LDQS, LDQS#
Symbol
V
V
V
V
V
RFU
V
V
NC
NU
NU
NF
DDQ
SSDL
DDL
REF
SSQ
DD
SS
Output
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Type
I/O
I/O
–
–
–
–
–
Description
Data strobe for lower byte: Output with read data, input with write data for source
synchronous operation. Edge-aligned with read data, center-aligned with write data.
LDQS# is only used when differential data strobe mode is enabled via the LOAD MODE
command.
Data strobe for upper byte: Output with read data, input with write data for source
synchronous operation. Edge-aligned with read data, center-aligned with write data.
UDQS# is only used when differential data strobe mode is enabled via the LOAD MODE
command.
Redundant data strobe: For x8 only. RDQS is enabled/disabled via the LOAD MODE
command to the extended mode register (EMR). When RDQS is enabled, RDQS is output
with read data only and is ignored during write data. When RDQS is disabled, ball B3 be-
comes data mask (see DM ball). RDQS# is only used when RDQS is enabled and differen-
tial data strobe mode is enabled.
Power supply: 1.8V ±0.1V.
DQ power supply: 1.8V ±0.1V. Isolated on the device for improved noise immunity.
DLL power supply: 1.8V ±0.1V.
SSTL_18 reference voltage (V
Ground.
DLL ground: Isolated on the device from V
DQ ground: Isolated on the device for improved noise immunity.
No connect: These balls should be left unconnected.
No function: x8: these balls are used as DQ[7:4].
Not used: For x16 only. If EMR(E10) = 0, A8 and E8 are UDQS# and LDQS#. If EMR(E10) =
1, then A8 and E8 are not used.
Not used: For x8 only. If EMR(E10) = 0, A2 and E8 are RDQS# and DQS#. If EMR(E10) = 1,
then A2 and E8 are not used.
Reserved for future use: Row address bits A13 (x16 only), A14, and A15.
16
DDQ
1Gb: x8, x16 Automotive DDR2 SDRAM
/2).
Micron Technology, Inc. reserves the right to change products or specifications without notice.
Ball Assignments and Descriptions
SS
and V
SSQ
.
2010 Micron Technology, Inc. All rights reserved.