Datasheet > 71V2556SA166PFG8

71V2556SA166PFG8

更新时间： 2024-11-17 00:21:43

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
25页	293K
描述
3.3V Synchronous ZBT SRAMs

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71V2556SA166PFG8 数据手册

IDT71V2556S/XS

128K x 36

IDT71V2556SA/XSA

3.3V Synchronous ZBT™ SRAMs

2.5V I/O, Burst Counter

Pipelined Outputs

AddressandcontrolsignalsareappliedtotheSRAMduringoneclock

cycle, andtwocycleslatertheassociateddatacycleoccurs, beitread

or write.

Features

◆

128K x 36 memory configurations

◆

Supports high performance system speed - 166 MHz

The IDT71V2556 contains data I/O, address and control signal

registers.Outputenableistheonlyasynchronoussignalandcanbeused

todisabletheoutputsatanygiventime.

AClockEnable(CEN)pinallowsoperationoftheIDT71V2556tobe

suspended as long as necessary. All synchronous inputs are ignored

when(CEN)ishighandtheinternaldeviceregisterswillholdtheirprevious

values.

(3.5 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

◆

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.

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

◆

TheIDT71V2556hasanon-chipburstcounter.Intheburstmode,the

IDT71V2556 can provide four cycles of data for a single address

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).

TheIDT71V2556SRAMsutilizeIDT's latesthigh-performanceCMOS

processandarepackagedinaJEDECstandard14mmx20mm100-pin

thinplasticquadflatpack(TQFP)aswellasa119ballgridarray(BGA).

complaint)

◆

Packaged in a JEDEC standard 100-pin plastic thin quad

flatpack (TQFP) and 119 ball grid array (BGA)

Description

TheIDT71V2556 isa3.3Vhigh-speed4,718,592-bit(4.5Megabit)

synchronous SRAM. It is designed to eliminate dead bus cycles when

turning the bus around between reads and writes, or writes and reads.

Thus, theyhavebeengiventhenameZBT^TM, orZeroBusTurnaround.

PinDescriptionSummary

A0-A16

Address Inputs

Input

Output

Input

I/O

Synchronous

Asynchronous

Synchronous

N/A

Chip Enables

CE , 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

TDO

TRST

Test Clock

Test Data Output

Synchronous

Asynchronous

Synchronous

Static

JTAG Reset (Optional)

Sleep Mode

I/O

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

DD, VDDQ

Data Input / Output

Core Power, I/O Power

Ground

Supply

Static

4875 tbl 01

APRIL 2011

DSC-4875/12

12 3 4 5 6 7...25

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与71V2556SA166PFG8相关器件

型号	品牌	获取价格	描述	数据表
71V2556SA166PFGI	IDT	获取价格	3.3V Synchronous ZBT SRAMs
71V2556SA166PFGI8	IDT	获取价格	3.3V Synchronous ZBT SRAMs
71V2556SA200BG	IDT	获取价格	ZBT SRAM, 128KX36, 3.2ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, MS-028AA, BGA-119
71V2556SA200BG8	IDT	获取价格	ZBT SRAM, 128KX36, 3.2ns, CMOS, PBGA119
71V2556SA200BGG	IDT	获取价格	ZBT SRAM, 128KX36, 3.2ns, CMOS, PBGA119, 22 X 14 MM, ROHS COMPLIANT, PLASTIC, MS-028AA, BG
71V2556SA200BGG8	IDT	获取价格	ZBT SRAM, 128KX36, 3.2ns, CMOS, PBGA119
71V2556SA200BQ	IDT	获取价格	ZBT SRAM, 128KX36, 3.2ns, CMOS, PBGA165, 13 X 15 MM, FPBGA-165
71V2556XS100BGG	IDT	获取价格	3.3V Synchronous ZBT SRAMs
71V2556XS100BGG8	IDT	获取价格	3.3V Synchronous ZBT SRAMs
71V2556XS100BGGI	IDT	获取价格	3.3V Synchronous ZBT SRAMs

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