Datasheet > HB52RD649DC-A6B

HB52RD649DC-A6B

更新时间： 2024-09-16 22:25:51

品牌	Logo	应用领域
尔必达 - ELPIDA		动态存储器
页数	文件大小	规格书
16页	463K
描述
512MB Unbuffered SDRAM S.O.DIMM

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数据手册

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HB52RD649DC-A6B 数据手册

DATA SHEET

512MB Unbuffered SDRAM S.O.DIMM

HB52RF649DC-B (64M words × 72 bits, 2 bank)

HB52RD649DC-B (64M words × 72 bits, 2 bank)

Description

Features

The HB52RF649DC, HB52RD649DC are a 64M × 72 ×

2 banks Synchronous Dynamic RAM Small Outline

Dual In-line Memory Module (S.O.DIMM), mounted 18

pieces of 256M bits SDRAM sealed in TCP package

and 1 piece of serial EEPROM (2k bits) for Presence

Detect (PD). An outline of the products is 144-pin Zig

Zag Dual tabs socket type compact and thin package.

Therefore, they make high density mounting possible

• Fully compatible with: JEDEC standard outline 8

bytes S.O.DIMM

• 144-pin Zig Zag Dual tabs socket type (dual lead out)

 PCB height: 33.02mm (1.30inch)

 Lead pitch: 0.80mm

• 3.3V power supply

• Clock frequency: 133MHz/100MHz (max.)

• LVTTL interface

• Data bus width: × 72 ECC

• Single pulsed /RAS

• 4 Banks can operates simultaneously and

independently

without surface mount technology.

common data inputs and outputs.

They provide

Decoupling

capacitors are mounted beside TCP on the module

board.

Note: Do not push the cover or drop the modules in

order to protect from mechanical defects, which

would be electrical defects.

• Burst read/write operation and burst read/single write

operation capability

• Programmable burst length (BL): 1, 2, 4, 8

• 2 variations of burst sequence

 Sequential

 Interleave

• Programmable /CE latency (CL): 2, 3

• Byte control by DQMB

• Refresh cycles: 8192 refresh cycles/64ms

• 2 variations of refresh

 Auto refresh

 Self refresh

• Low self refresh current

: HB52RF649DC-xxBL (L-version)

: HB52RD649DC-xxBL (L-version)

Document No. E0223H30 (Ver. 3.0)

Date Published April 2002 (K) Japan

URL: http://www.elpida.com

Elpida Memory, Inc. 2001-2002

Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.

12 3 4 5 6 7...16

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