Datasheet > IDT71V3557SA75BQGI

IDT71V3557SA75BQGI

更新时间： 2024-11-15 00:36:31

品牌	Logo	应用领域
艾迪悌 - IDT		静态存储器
页数	文件大小	规格书
28页	298K
描述
Synchronous ZBT SRAMs

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IDT71V3557SA75BQGI 数据手册

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128K x 36, 256K x 18,

IDT71V3557S

IDT71V3559S

IDT71V3557SA

IDT71V3559SA

3.3V Synchronous ZBT™ SRAMs

3.3V I/O, Burst Counter,

Flow-Through Outputs

Features

it read or write.

◆

128K x 36, 256K x 18 memory configurations

Supports high performance system speed - 100 MHz

(7.5 ns Clock-to-Data Access)

The IDT71V3557/59 contain address, data-in and control signal

registers.Theoutputsareflow-through(nooutputdataregister).Output

enable is the only asynchronous signal and can be used to disable the

outputsatanygiventime.

A Clock Enable (CEN) pin allows operation of the IDT71V3557/59

to be suspended as long as necessary. All synchronous inputs are

ignored when (CEN) is high and the internal device registers will hold

their previous values.

Therearethreechipenablepins(CE1,CE2,CE2)thatallowtheuser

todeselectthedevicewhendesired.Ifanyoneofthesethreeisnotasserted

when ADV/LD is low, no new memory operation can be

initiated. However, any pending data transfers (reads or writes) will

be completed. The data bus will tri-state one cycle after chip is de-

selectedorawriteisinitiated.

The IDT71V3557/59 have an on-chip burst counter. In the burst

mode, the IDT71V3557/59 can provide four cycles of data for a single

address presented to the SRAM. The order of the burst sequence is

defined by the LBO input pin. The LBO pin selects between linear and

interleaved burst sequence. The ADV/LD signal is used to load a new

externaladdress(ADV/LD=LOW)orincrementtheinternalburstcounter

(ADV/LD = HIGH).

◆

ZBT^TMFeature - No dead cycles between write and read

cycles

Internally synchronized output buffer enable eliminates

the need to control OE

◆

Single R/W (READ/WRITE) control pin

4-word burst capability (Interleaved or linear)

Individual byte write (BW1 - BW4) control (May tie active)

Three chip enables for simple depth expansion

3.3V power supply (±5%), 3.3V (±5%) I/O Supply (VDDQ)

Optional Boundary Scan JTAG Interface (IEEE 1149.1

complaint)

Packaged in a JEDEC Standard 100-pin plastic thin quad

flatpack (TQFP), 119 ball grid array (BGA) and 165 fine

pitch ball grid array (fBGA)

◆

Description

TheIDT71V3557/59are3.3Vhigh-speed4,718,592-bit(4.5Mega-

bit) synchronous SRAMs organized as 128K x 36/256K x 18. They are

designed to eliminate dead bus cycles when turning the bus around

between reads and writes, or writes and reads. Thus they have been

given the name ZBT^TM, or Zero Bus Turnaround.

The IDT71V3557/59 SRAMs utilize IDT's latest high-performance

CMOSprocessandarepackagedinaJEDECstandard14mmx20mm

100-pin thinplasticquadflatpack(TQFP)aswellasa119 ballgridarray

(BGA) and a 165 fine pitch ball grid array (fBGA).

AddressandcontrolsignalsareappliedtotheSRAMduringoneclock

cycle, andonthenextclockcycletheassociateddatacycleoccurs, be

PinDescriptionSummary

0-A17

Address Inputs

Input

Output

Input

I/O

Synchronous

Asynchronous

Synchronous

N/A

Chip Enables

CE1

, CE

Output Enable

R/W

Read/Write Signal

Clock Enable

CEN

Individual Byte Write Selects

Clock

, BW

CLK

ADV/LD

LBO

TMS

TDI

Advance burst address / Load new address

Linear / Interleaved Burst Order

Test Mode Select

Test Data Input

Synchronous

Static

Synchronous

N/A

TCK

TDO

TRST

Test Clock

Test Data Output

Synchronous

Asynchronous

Synchronous

Static

JTAG Reset (Optional)

Sleep Mode

I/O

-I/O31, I/OP1-I/OP4

Data Input / Output

Core Power, I/O Power

Ground

DD, VDDQ

Supply

Static

52 82 tb l 01

FEBRUARY 2009

DSC-5282/09

12 3 4 5 6 7...28

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与IDT71V3557SA75BQGI相关器件

型号	品牌	获取价格	描述	数据表
IDT71V3557SA75BQI	IDT	获取价格	128K x 36, 256K x 18, 3.3V Synchronous ZBT SRAMs 3.3V I/O, Burst Counter, Flow-Through Out
IDT71V3557SA75PF	IDT	获取价格	128K x 36, 256K x 18, 3.3V Synchronous ZBT SRAMs 3.3V I/O, Burst Counter, Flow-Through Out
IDT71V3557SA75PFG	IDT	获取价格	Synchronous ZBT SRAMs
IDT71V3557SA75PFGI	IDT	获取价格	Synchronous ZBT SRAMs
IDT71V3557SA75PFI	IDT	获取价格	128K x 36, 256K x 18, 3.3V Synchronous ZBT SRAMs 3.3V I/O, Burst Counter, Flow-Through Out
IDT71V3557SA80BG	IDT	获取价格	128K x 36, 256K x 18, 3.3V Synchronous ZBT SRAMs 3.3V I/O, Burst Counter, Flow-Through Out
IDT71V3557SA80BG8	IDT	获取价格	ZBT SRAM, 128KX36, 8ns, CMOS, PBGA119, 14 X 22 MM, POWER, PLASTIC, BGA-119
IDT71V3557SA80BGG	IDT	获取价格	Cache SRAM, 128KX36, 8ns, CMOS, PBGA119, 14 X 22 MM, ROHS COMPLIANT, BGA-119
IDT71V3557SA80BGGI	IDT	获取价格	Synchronous ZBT SRAMs
IDT71V3557SA80BGGI8	IDT	获取价格	Cache SRAM, 128KX36, 8ns, CMOS, PBGA119, 14 X 22 MM, ROHS COMPLIANT, BGA-119

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