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EM488M3244LBB-75F 参数 Datasheet PDF下载

EM488M3244LBB-75F图片预览
型号: EM488M3244LBB-75F
PDF下载: 下载PDF文件 查看货源
内容描述: 256MB ( 2M × 4Bank × 32 )同步DRAM [256Mb (2M】4Bank】32) Synchronous DRAM]
分类和应用: 动态存储器
文件页数/大小: 19 页 / 1127 K
品牌: EOREX [ EOREX CORPORATION ]
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eorex
Features
Preliminary
EM488M3244LBB
256Mb (2M
×
4Bank
×
32) Synchronous DRAM
Description
The EM488M3244LBB is Synchronous Dynamic
Random Access Memory (SDRAM) organized as
2Meg words x 4 banks by 32 bits. All inputs and
outputs are synchronized with the positive edge of
the clock.
The 256Mb SDRAM uses synchronized pipelined
architecture to achieve high speed data transfer
rates and is designed to operate at 1.8V low power
memory system. It also provides auto refresh with
power saving / down mode. All inputs and outputs
voltage levels are compatible with LVCMOS.
Available packages: BGA-90B (13mmx8mm)
• Fully Synchronous to Positive Clock Edge
• Single 1.8V
±0.1V
Power Supply
• LVCMOS Compatible with Multiplexed Address
• Programmable Burst Length (B/L) - 1, 2, 4, 8
or Full Page
• Programmable CAS Latency (C/L) - 2 or 3
• Data Mask (DQM) for Read / Write Masking
• Programmable Wrap Sequence
– Sequential (B/L = 1/2/4/8/full Page)
– Interleave (B/L = 1/2/4/8)
• Burst Read with Single-bit Write Operation
• Deep Power Down Mode.
• Auto Refresh and Self Refresh
• Special Function Support.
– PASR (Partial Array Self Refresh)
– Auto TCSR (Temperature Compensated Self
Refresh)
• Programmable Driver Strength Control
– Full Strength or 1/2, 1/4 of Full Strength
• 4,096 Refresh Cycles / 64ms (15.625us)
Ordering Information
Part No
EM488M3244LBB-75F
EM488M3244LBB-75FE
Organization
8M X 32
8M X 32
Max. Freq
133MHz @CL3
133MHz @CL3
Package
BGA-90B
BGA-90B
Grade
Commercial
Pb
Free
Extend temp. Free
* EOREX reserves the right to change products or specification without notice.
May. 2007
1/19
www.eorex.com