PDF: 09005aef833913f1/Source: 09005aef833913d6 Micron Technology, Inc., reserves the right to change products or specifications without notice.
ddr_mobile_sdram_only_152b_omap_pop.fm - Rev. E 06/09 EN
6 ©2008 Micron Technology, Inc. All rights reserved.
152-Ball x32 Mobile LPDDR (only) PoP (TI-OMAP)
Ball Assignments and Descriptions
Notes: 1. Balls marked RFU may or may not be connected internally. These balls should not be used.
Contact factory for details.
Table 3: Ball Assignments
Symbol Type Description
A[13:0] Input
Address inputs: Specify the row or column address. Also used to load the mode registers. The
maximum address is determined by density and configuration. Consult the LPDDR product data
sheet for the maximum address for a given density and configuration. Unused address pins become
RFU.
1
BA0, BA1 Input
Bank address inputs: Specify one of the 4 banks.
CAS# Input
Column select: Specifies the command to execute.
CK, CK#
CK is the system clock. CK and CK# are differential clock inputs. All address and control signals are
sampled and referenced on the crossing of the rising edge of CK with the falling edge of CK#.
CKE0, CKE1 Input
Clock enable.
CKE0 is used for a single LPDDR product.
CKE1 is used for dual LPDDR products, and is considered RFU for single products.
CS0#, CS1# Input
Chip select:
CS0# is used for a single LPDDR product.
CS1# is used for dual LPDDR products, and is considered RFU for single products.
DM[3:0] Input
Data mask: Determines which bytes are written during WRITE operations.
RAS# Input
Row select: Specifies the command to execute.
WE# Input
Write enable: Specifies the command to execute.
DQ[31:0] Input/
output
Data bus: Data inputs/outputs.
DQS[3:0] Input/
output
Data strobe: Coordinates read/write transfers of data; one DQS per DQ byte.
TQ Output
Temperature sensor output: TQ HIGH when LPDDR T
J
exceeds 85°C.
V
DD
Supply
V
DD
: LPDDR power supply.
V
DDQ
Supply
V
DDQ
: LPDDR I/O power supply.
V
SSQ
Supply
V
SSQ
: LPDDR I/O ground.
RFU
1
–
Reserved for future use.
Table 4: Non-Device-Specific Ball Assignments
Symbol Type Description
V
SS
Supply
V
SS
: Shared ground.
DNU –
Do not use: Must be grounded or left floating.
NC –
No connect: Not internally connected.