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AS4DDR264M72PBG1 Datasheet, PDF (1/28 Pages) Austin Semiconductor – 64Mx72 DDR2 SDRAM w/ SHARED CONTROL BUS iNTEGRATED Plastic Encapsulated Microcircuit | |||
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iPEM
4.8 Gb SDRAM-DDR2
Austin Semiconductor, Inc. AS4DDR264M72PBG1
64Mx72 DDR2 SDRAM w/ SHARED CONTROL BUS
iNTEGRATED Plastic Encapsulated Microcircuit
FEATURES
 DDR2 Data rate = 667, 533, 400
 Available in Industrial, Enhanced and Military Temp
 Package:
⢠Proprietary Enchanced Die Stacked iPEM
⢠208 Plastic Ball Grid Array (PBGA), 16 x 23mm
⢠1.00mm ball pitch
 Differential data strobe (DQS, DQS#) per byte
 Internal, pipelined, double data rate architecture
 4n-bit prefetch architecture
 DLL for alignment of DQ and DQS transitions with
clock signal
 Eight internal banks for concurrent operation
(Per DDR2 SDRAM Die)
 Programmable Burst lengths: 4 or 8
 Auto Refresh and Self Refresh Modes (I/T Version)
 On Die Termination (ODT)
 Adjustable data â output drive strength
 1.8V ±0.1V common core power and I/O supply
 Programmable CAS latency: 3, 4, 5, 6 or 7
 Posted CAS additive latency: 0, 1, 2, 3, 4 or 5
 Write latency = Read latency - 1* tCK
 Organized as 64M x 72
 Weight: AS4DDR264M72PBG1 ~ 2.0 grams typical
NOTE: Self Refresh Mode available on Industrial and Enhanced temp. only
BENEFITS
 61% Space Savings
 55% I/O reduction vs Individual package
approach
 Reduced part count
 Reduced trace lengths for lower parasitic
capacitance
 Suitable for hi-reliability applications
 Upgradable to 128M x 72 density in future
 Pin/Function equivalent to White
W3H64M72E-xBSx
ConfigurationAddressing
Parameter
Configuration
RefreshCount
RowAddress
BankAddress
ColumnAddress
64Megx72
8Megx16x8Banks
8K
A0ͲA12(8k)
BA0ͲBA2(8)
A0ͲA9(1K)
FUNCTIONAL BLOCK DIAGRAM
Ax, BA0-2
ODT
VRef
VCC
VSS
VSSQ
CS\
WE\
RAS\
CAS\
CKE\
ODT
UDMx, LDMx
UDSQx,UDSQx\
LDSQx, LDSQx\
CKx,CKx\
A
VCCQ
VSSQ
VCCL
VSSDL
A
2
2
2
2
DQ0-15 B
VCCQ
VSSQ
VCCL
VSSDL
VCCQ
VSSQ
VCCL
B
VSSDL
VCCQ
VSSQ
VCCL
C
VSSDL
VCCQ
VSSQ
VCCL
D
VSSDL
2
2
2
2
DQ16-31 C
2
2
2
2
DQ32-47 D
2
2
2
2
2
2
2
DQ48-63
ODT
LDM4
UDM4
DQ64-71
AS4DDR264M72PBG1
Rev. 3.0 6/09
Austin Semiconductor, Inc. â Austin, Texas â 512.339.1188 â www.austinsemiconductor.com
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