DATA SHEET
256MB Unbuffered SDRAM DIMM
EBS25EC8APFA (32M words
脳
72 bits, 1 bank)
Description
The EBS25EC8APFA is 32M words
脳
72 bits, 1 bank
Synchronous Dynamic RAM Unbuffered Module,
mounted 9 pieces of 256M bits SDRAM sealed in
TSOP package. This module provides high density
and large quantities of memory in a small space
without utilizing the surface mounting technology.
Decoupling capacitors are mounted on power supply
line for noise reduction.
Features
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Fully compatible with 8 bytes DIMM: JEDEC
standard outline
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168-pin socket type dual in line memory module
(DIMM)
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PCB height: 34.93mm (1.38inch )
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Lead pitch: 1.27mm
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3.3V power supply
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Clock frequency: 133MHz (max.)
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LVTTL interface
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Data bus width:
脳
72 ECC
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Single pulsed /RAS
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4 Banks can operates simultaneously and
independently
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Burst read/write operation and burst read/single write
operation capability
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Programmable burst length (BL): 1, 2, 4, 8
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2 variations of burst sequence
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Sequential
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Interleave
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Programmable /CAS latency (CL): 2, 3
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Byte control by DQMB
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Refresh cycles: 8192 refresh cycles/64ms
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2 variations of refresh
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Auto refresh
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Self refresh
Document No. E0209E20 (Ver. 2.0)
Date Published June 2002 (K) Japan
URL: http://www.elpida.com
錚〦llpida
Memory, Inc. 2001-2002
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