Datasheet > IDT71V3548S

IDT71V3548S

更新时间： 2024-11-26 05:22:47

品牌	Logo	应用领域
艾迪悌 - IDT		计数器静态存储器
页数	文件大小	规格书
26页	487K
描述
256K x 18 3.3V Synchronous ZBT SRAM 3.3V I/O, Burst Counter Pipelined Outputs

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IDT71V3548S 数据手册

256K x 18

IDT71V3548S

IDT71V3548SA

3.3V Synchronous ZBT SRAM

3.3V I/O, Burst Counter

Pipelined Outputs

Address and control signals are applied to the SRAM during one

clockcycle,andtwocycleslatertheassociateddatacycleoccurs,beit

read or write.

The IDT71V3548 contain data I/O, address and control signal

registers.Outputenableistheonlyasynchronoussignalandcanbeused

todisabletheoutputsatanygiventime.

A Clock Enable (CEN) pin allows operation of the IDT71V3548

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

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

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

initiated. However, anypendingdata transfers (reads orwrites)willbe

completed.Thedatabuswilltri-statetwocyclesafterchipisdeselected

orawriteisinitiated.

The IDT71V3548 has an on-chip burst counter. In the burst

mode,theIDT71V3548canprovidefourcyclesofdataforasingleaddress

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).

TheIDT71V3548SRAMsutilizeIDT's latesthigh-performanceCMOS

processandarepackagedinaJEDECstandard14mmx20mm100-pin

plasticthinquadflatpack(TQFP)as wellas a 119ballgridarray(BGA)

and 165 fine pitch ball grid array (fBGA).

Features

◆

256K x 18 memory configurations

◆

Supports high performance system speed - 133 MHz

(4.2 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%), 3.3V I/O Supply (VDDQ)

Optional Boundary Scan JTAG Interface (IEEE 1149.1

compliant)

◆

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

The IDT71V3548 are 3.3V high-speed 4,718,592-bit (4.5 Megabit)

synchronous SRAMS. 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.

PinDescriptionSummary

A -A

Address Inputs

Input

Output

Input

I/O

Synchronous

Asynchronous

Synchronous

N/A

Chip Enables

CE , CE , CE

Output Enable

R/W

CEN

Read/Write Signal

Clock Enable

Individual Byte Write Selects

Clock

BW , BW , BW , BW

CLK

ADV/LD

LBO

Advance burst address / Load new address

Linear / Interleaved Burst Order

Test Mode Select

Te st Data Inp ut

Synchronous

Static

TMS

TDI

Synchronous

N/A

TCK

TDO

TRST

Te st Clo c k

Test Data Output

Synchronous

Asynchronous

Synchronous

Static

JTAG Reset (Optional)

Sleep Mode

I/O -I/O , I/O -I/O

Data Input / Output

Core Power, I/O Power

Ground

DD DDQ

, V

Supply

Static

5296 tbl 01

MAY 2002

DSC-5296/03

12 3 4 5 6 7...26

中文翻译

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与IDT71V3548S相关器件

型号	品牌	获取价格	描述	数据表
IDT71V3548S100B	IDT	获取价格	ZBT SRAM, 256KX18, 5ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, BGA-119
IDT71V3548S100BG	IDT	获取价格	256K x 18 3.3V Synchronous ZBT SRAM 3.3V I/O, Burst Counter Pipelined Outputs
IDT71V3548S100BGG	IDT	获取价格	ZBT SRAM, 256KX18, 5ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, BGA-119
IDT71V3548S100BGGI	IDT	获取价格	ZBT SRAM, 256KX18, 5ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, BGA-119
IDT71V3548S100BGI	IDT	获取价格	256K x 18 3.3V Synchronous ZBT SRAM 3.3V I/O, Burst Counter Pipelined Outputs
IDT71V3548S100BQ	IDT	获取价格	256K x 18 3.3V Synchronous ZBT SRAM 3.3V I/O, Burst Counter Pipelined Outputs
IDT71V3548S100BQGI	IDT	获取价格	ZBT SRAM, 256KX18, 5ns, CMOS, PBGA165, 13 X 15 MM, FBGA-165
IDT71V3548S100BQI	IDT	获取价格	256K x 18 3.3V Synchronous ZBT SRAM 3.3V I/O, Burst Counter Pipelined Outputs
IDT71V3548S100PF	IDT	获取价格	256K x 18 3.3V Synchronous ZBT SRAM 3.3V I/O, Burst Counter Pipelined Outputs
IDT71V3548S100PF8	IDT	获取价格	ZBT SRAM, 256KX18, 5ns, CMOS, PQFP100, 14 X 20 MM, 1.40 MM HEIGHT, PLASTIC, TQFP-100

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