Datasheet > 存储 > SRAM> IDT71V2558XSA100BGI

IDT71V2558XSA100BGI

更新时间： 2024-11-17 05:14:27

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	502K
描述
ZBT SRAM, 256KX18, 5ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, MS-028AA, BGA-119

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IDT71V2558XSA100BGI 数据手册

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128K x 36, 256K x 18

3.3V Synchronous ZBT™ SRAMs

2.5V I/O, Burst Counter

Pipelined Outputs

IDT71V2556S/XS

IDT71V2558S/XS

IDT71V2556SA/XSA

IDT71V2558SA/XSA

Features

cycle, andtwocycleslatertheassociateddatacycleoccurs, beitread

or write.

The IDT71V2556/58 contain data I/O, address and control signal

registers.Outputenableistheonlyasynchronoussignalandcanbeused

todisabletheoutputsatanygiventime.

AClockEnable(CEN)pinallowsoperationoftheIDT71V2556/58to

besuspendedaslongasnecessary.Allsynchronousinputsareignored

when(CEN)ishighandtheinternaldeviceregisterswillholdtheirprevious

values.

Therearethreechipenablepins(CE¹,CE2,CE2)thatallowtheuser

to deselect the device when desired. If any one of these three are not

assertedwhenADV/LDislow,nonewmemoryoperationcanbeinitiated.

However,anypendingdatatransfers(readsorwrites)willbecompleted.

Thedatabuswilltri-statetwocyclesafterchipisdeselectedorawriteis

initiated.

TheIDT71V2556/58hasanon-chipburstcounter.Intheburstmode,

theIDT71V2556/58canprovidefourcyclesofdataforasingleaddress

presentedtotheSRAM.Theorderoftheburstsequenceisdefinedbythe

LBOinputpin.TheLBOpinselectsbetweenlinearandinterleavedburst

sequence. The ADV/LD signal is used to load a new external address

(ADV/LD = LOW) or increment the internal burst counter (ADV/LD =

HIGH).

The IDT71V2556/58 SRAMs utilize IDT's latest high-performance

CMOSprocessandarepackagedinaJEDECstandard14mmx20mm

100-pinthinplasticquadflatpack(TQFP)aswellasa119ballgridarray

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

◆

128K x 36, 256K x 18 memory configurations

◆

Supports high performance system speed - 200 MHz

(3.2 ns Clock-to-Data Access)

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

Positive clock-edge triggered address, data, and control

◆

signal registers for fully pipelined applications

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%), 2.5V 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

TheIDT71V2556/58 are3.3Vhigh-speed4,718,592-bit(4.5Mega-

bit)synchronousSRAMS.Theyaredesignedtoeliminatedeadbuscycles

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.

AddressandcontrolsignalsareappliedtotheSRAMduringoneclock

PinDescriptionSummary

0-A17

Address Inputs

Input

Output

Input

I/O

Synchronous

Asynchronous

Synchronous

N/A

Chip Enables

CE1, CE

, 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

Test Clock

TDO

TRST

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

4875 tbl 01

FEBRUARY 2007

DSC-4875/09

12 3 4 5 6 7...28

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与IDT71V2558XSA100BGI相关器件

型号	品牌	获取价格	描述	数据表
IDT71V2558XSA100BQ	IDT	获取价格	ZBT SRAM, 256KX18, 5ns, CMOS, PBGA165, 13 X 15 MM, FBGA-165
IDT71V2558XSA100BQI	IDT	获取价格	ZBT SRAM, 256KX18, 5ns, CMOS, PBGA165, 13 X 15 MM, FBGA-165
IDT71V2558XSA133BGI	IDT	获取价格	ZBT SRAM, 256KX18, 4.2ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, MS-028AA, BGA-119
IDT71V2558XSA133BQ	IDT	获取价格	ZBT SRAM, 256KX18, 4.2ns, CMOS, PBGA165, 13 X 15 MM, FBGA-165
IDT71V2558XSA133BQI	IDT	获取价格	ZBT SRAM, 256KX18, 4.2ns, CMOS, PBGA165, 13 X 15 MM, FBGA-165
IDT71V2558XSA166BG	IDT	获取价格	ZBT SRAM, 256KX18, 3.5ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, MS-028AA, BGA-119
IDT71V2558XSA166BGI	IDT	获取价格	ZBT SRAM, 256KX18, 3.5ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, MS-028AA, BGA-119
IDT71V2558XSA166BQ	IDT	获取价格	ZBT SRAM, 256KX18, 3.5ns, CMOS, PBGA165, 13 X 15 MM, FBGA-165
IDT71V2558XSA166BQI	IDT	获取价格	ZBT SRAM, 256KX18, 3.5ns, CMOS, PBGA165, 13 X 15 MM, FBGA-165
IDT71V2558XSA200BG	IDT	获取价格	ZBT SRAM, 256KX18, 3.2ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, MS-028AA, BGA-119

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