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EM44CM0884LBA-25E Datasheet(PDF) 2 Page - Eorex Corporation

Part # EM44CM0884LBA-25E
Description  Programmable CAS Latency
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Manufacturer  EOREX [Eorex Corporation]
Direct Link  http://www.eorex.com
Logo EOREX - Eorex Corporation

EM44CM0884LBA-25E Datasheet(HTML) 2 Page - Eorex Corporation

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EM44CM0884LBA
Dec. 2014
2/28
www.eorex.com
512Mb (16M×4Bank×8) Double DATA RATE 2 SDRAM
Features
• JEDEC Standard VDD/VDDQ = 1.8V±0.1V.
• All inputs and outputs are compatible with SSTL_18
interface.
• Fully differential clock inputs (CK, /CK) operation.
• Eight Banks
• Posted CAS
• Bust length: 4 and 8.
• Programmable CAS Latency (CL): 5, 6, 7
• Programmable Additive Latency (AL): 0, 1, 2, 3, 4,
5 & 6.
• Write Latency (WL) =Read Latency (RL) -1.
• Read Data Strobe (RDQS) supported
• Bi-directional Differential Data Strobe (DQS).
• Data inputs on DQS centers when write.
• Data outputs on DQS, /DQS edges when read.
• On chip DLL align DQ, DQS and /DQS transition
with CK transition.
• DM mask write data-in at the both rising and falling
edges of the data strobe.
• Sequential & Interleaved Burst type available.
• Off-Chip Driver (OCD) Impedance Adjustment
• On Die Termination (ODT)
• Auto Refresh and Self Refresh
• 8,192 Refresh Cycles / 64ms
• 7.8us at average periodic refresh interval
• RoHS Compliance
• tRAS lockout supported
• High Temperature Self-Refresh rate enable
Description
The EM44CM0884LBA is a high speed Double Date
Rate 2 (DDR2) Synchronous DRAM fabricated with
high performance CMOS process containing
536,870,912 bits which organized as 16Mbits x 4
banks by 8 bits. This synchronous device achieves
high speed double-data-rate transfer rates of up to
800 MT/sec (DDR2-800) for general applications.
The chip is designed to comply with the following key
DDR2 SDRAM features: (1) posted CAS with
additive latency, (2) write latency = read latency -1,
(3) Off-Chip Driver (OCD) impedance adjustment and
On Die Termination (4) normal and weak strength
data output driver. All of the control and address
inputs are synchronized with a pair of externally
supplied differential clocks. Inputs are latched at the
cross point of differential clocks (CK rising and /CK
falling). All I/Os are synchronized with a pair of
bidirectional strobes (DQS and /DQS) in a source
synchronous fashion. The address bus is used to
convey row, column and bank address information in
a /RAS and /CAS multiplexing style. The 512Mb
DDR2 devices operates with a single power supply:
1.8V ± 0.1V VDD and VDDQ. Available package:
FBGA-60Ball (with 0.8mm x 0.8mm ball pitch)


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