Datasheet > PDM34089S12QTY

PDM34089S12QTY

更新时间： 2024-11-25 15:47:39

品牌	Logo	应用领域
IXYS		静态存储器
页数	文件大小	规格书
15页	291K
描述
SRAM

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技术参数
数据手册

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PDM34089S12QTY 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	compliant	风险等级：	5.84
Base Number Matches：	1

PDM34089S12QTY 数据手册

PRELIMINARY

PDM34089

3.3V 64K x 32 Fast CMOS

Synchronous Static RAM

with Burst Counter

Description

Features

The PDM34089 is a 2,097,152 bit synchronous ran-

dom access memory organized as 65,536 x 32 bits. It

is designed with burst mode capability and interface

controls to provide high-performance in second

level cache designs for x86, Pentium, 680x0, and

PowerPC microprocessors. Addresses, write data

and all control signals except output enable are con-

trolled through positive edge-triggered registers.

Write cycles are self-timed and are also initiated by

the rising edge of the clock. Controls are provided to

allow burst reads and writes of up to four words in

length. A 2-bit burst address counter controls the

two least-signiﬁcant bits of the address during burst

reads and writes. The burst address counter selec-

tively uses the 2-bit counting scheme required by the

x86 and Pentium or 680x0 and PowerPC micropro-

cessors as controlled by the mode pin. Individual

write strobes provide byte write for the four 8-bit

bytes of data. An asynchronous output enable sim-

pliﬁes interface to high-speed buses.

■ Interfaces directly with the x86, Pentium™, 680X0

and PowerPC™ processors

■ Single 3.3V power supply

■ Mode selectable for interleaved or linear burst:

Interleaved for x86 and Pentium

Linear for 680x0 and PowerPC

■ Fast access times:

9, 10, 12 and 15 ns

■ High-density 64K x 32 architecture with burst

address counter

■ Fully registered inputs

■ High-output drive: 30 pF at rated T

■ Asynchronous output enable

■ Self-timed write cycle

■ Separate byte write enables and one global write

enable

■ Internal burst read/write address counter

■ Internal registers for address, data, controls

■ Burst mode selectable

■ Sleep mode

■ Packages:

100-pin QFP - (Q)

100-pin TQFP - (TQ)

i486, Pentium are trademarks of Intel Corp. PowerPC is a trademark of the International Business Machines Corporation.

Rev 1.1 - 5/01/98

12 3 4 5 6 7...15

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