Datasheet > IDT71T7570275PFI

IDT71T7570275PFI

更新时间： 2024-12-02 00:42:11

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
26页	395K
描述
Synchronous ZBT SRAMs

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中文翻译

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数据手册

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IDT71T7570275PFI 数据手册

512K x 36, 1M x 18

2.5V Synchronous ZBT™ SRAMs

2.5V I/O, Burst Counter

Flow-Through Outputs

IDT71T75702

IDT71T75902

Features

◆

The IDT71T75702/902 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.

AClockEnable(CEN)pinallowsoperationoftheIDT71T75702/902

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

ignoredwhenCENishighandtheinternaldeviceregisterswillholdtheir

previous values.

There are three chip enable pins (CE¹, CE2, CE2) that allow the

usertodeselectthedevicewhendesired.Ifanyoneofthesethreeisnot

assertedwhenADV/LDislow,nonewmemoryoperationcanbeinitiated.

However,anypendingdatatransfers(readsorwrites)willbecompleted.

Thedatabuswilltri-stateonecycleafterthechipisdeselectedorawrite

isinitiated.

The IDT71T75702/902 have an on-chip burst counter. In the burst

mode,theIDT71T75702/902canprovidefourcyclesofdataforasingle

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).

512K x 36, 1M x 18 memory configurations

◆

Supports high performance system speed - 100 MHz

(7.5 ns Clock-to-Data Access)

ZBT Feature - 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

2.5V power supply (±5%)

2.5V (±5%) I/O Supply (VDDQ)

Power down controlled by ZZ input

◆

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)

Description

The IDT71T75702/902 are 2.5V high-speed 18,874,368-bit

(18 Megabit) synchronous SRAMs organized as 512K x 36 /1M x 18.

They are designed to eliminate dead bus cycles when turning the bus

aroundbetweenreadsandwrites,orwritesandreads.Thustheyhave

The IDT71T75702/902 SRAMs utilize IDT’s high-performance

CMOSprocess,andarepackagedinaJEDECStandard14mmx20mm

100-pinplasticthinquadflatpack(TQFP)aswellasa119 ballgridarray

(BGA).

been given the name ZBT , or Zero Bus Turnaround.

AddressandcontrolsignalsareappliedtotheSRAMduringoneclock

cycle,andonthenextclockcycletheassociateddatacycleoccurs,be

it read or write.

PinDescriptionSummary

A0-A19

Ad d re ss Inp uts

Input

Output

Input

I/ O

Synchronous

Asynchronous

Synchronous

N/A

Chip Enables

CE1, CE2, CE2

Output Enable

CEN

BW1 BW2 BW3 BW4

Read/Write Signal

Clock Enable

Individual Byte Write Selects

Clock

CLK

ADV/LD

Advance Burst Address/Load New Address

Linear/Interleaved Burst Order

Tes t Mo de S el e ct

Test Data Input

Synchronous

Static

LBO

TMS

TDI

N/A

TCK

TDO

Te s t C loc k

N/A

Te s t D ata Outp ut

JTAG Reset (Optional)

Sleep Mode

N/A

Asynchronous

Synchronous

Static

TRST

I/ O0-I/O31, I/OP1-I/OP4

VDD, VDDQ

Data Input/Output

Co re Po wer, I/O Power

Ground

Supply

VSS

Static

5319 tbl 01

APRIL 2004

FEBRUARY 2009

DSC-5319/08

12 3 4 5 6 7...26

中文翻译

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与IDT71T7570275PFI相关器件

型号	品牌	获取价格	描述	数据表
IDT71T7570280BG	IDT	获取价格	Synchronous ZBT SRAMs
IDT71T7570280BGI	IDT	获取价格	Synchronous ZBT SRAMs
IDT71T7570280PF	IDT	获取价格	Synchronous ZBT SRAMs
IDT71T7570280PFI	IDT	获取价格	Synchronous ZBT SRAMs
IDT71T7570285BG	IDT	获取价格	Synchronous ZBT SRAMs
IDT71T7570285BGI	IDT	获取价格	Synchronous ZBT SRAMs
IDT71T7570285PF	IDT	获取价格	Synchronous ZBT SRAMs
IDT71T7570285PFI	IDT	获取价格	Synchronous ZBT SRAMs
IDT71T75702S75BG8	IDT	获取价格	ZBT SRAM, 512KX36, 7.5ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, BGA-119
IDT71T75702S75BGG	IDT	获取价格	ZBT SRAM, 512KX36, 7.5ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, BGA-119

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