MT47H32M16HR-25E AIT:G Micron, MT47H32M16HR-25E AIT:G Datasheet - Page 16

• Manufacturer Part Number: MT47H32M16HR-25E AIT:G
• Description: DRAM Chip DDR2 SDRAM 512M-Bit 32Mx16 1.8V 84-Pin FBGA
• Manufacturer: Micron

Table 3: FBGA 84-Ball – x16 and 60-Ball – x4, x8 Descriptions (Continued)
PDF: 09005aef8440dbbc
512mbddr2_ait_aat.pdf – Rev. C 7/11 EN
UDQS, UDQS#
RDQS, RDQS#
LDQS, LDQS#
DQS, DQS#
Symbol
V
V
V
V
V
RFU
V
V
NU
NC
NF
DDQ
SSDL
DDL
SSQ
REF
DD
SS
Output
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Type
I/O
I/O
I/O
–
–
–
–
Description
Data strobe: Output with read data, input with write data for source synchronous oper-
ation. Edge-aligned with read data, center-aligned with write data. DQS# is only used
when differential data strobe mode is enabled via the LOAD MODE command.
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 64 Meg x 8 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 becomes data mask (see DM ball). RDQS# is only used when RDQS is enabled and dif-
ferential 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]; x4: they are no function.
Not used: If EMR(E10) = 0: x16, A8 = UDQS# and E8 = LDQS#; x8, A2 = RDQS# and A8 =
DQS#; x4, A2 = NU and A8 = NU. If EMR(E10) = 1: x16, A8 = NU and E8 = NU; x8, A2 = NU
and A8 = NU; x4, A2 = NU and A8 = NU.
Reserved for future use: Bank address BA2, row address bits A13 (x16 only), A14, and
A15.
Micron Confidential and Proprietary
16
512Mb: x8, x16 Automotive DDR2 SDRAM
DDQ
/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.