70V7339S166BFG8 datasheet(4/22 Pages) IDT

Part #	70V7339S166BFG8

Description	HIGH-SPEED 3.3V 512K x 18 SYNCHRONOUS BANK-SWITCHABLE DUAL-PORT STATIC RAM

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Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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6.42

4

IDT70V7339S

High-Speed 512K x 18 Synchronous Bank-Switchable Dual-Port Static RAM

Industrial and Commercial Temperature Ranges

Pin Names

Left Port

Right Port

Names

CE0L,

CE1L

CE0R,

CE1R

Chip Enables

R/WL

R/WR

Read/Write Enable

OEL

OER

Output Enable

BA0L - BA5L

BA0R - BA5R

Bank Address(4)

A0L - A12L

A0R - A12R

Address

I/O0L - I/O17L

I/O0R - I/O17R

Data Input/Output

CLKL

CLKR

Clock

PL/FTL

PL/FTR

Pipeline/Flow-Through

ADSL

ADSR

Address Strobe Enable

CNTENL

CNTENR

Counter Enable

REPEATL

REPEATR

Counter Repeat(3)

LBL

, UBL

LBR

, UBR

Byte Enables (9-bit bytes)

VDDQL

VDDQR

Power (I/O Bus) (3.3V or 2.5V)(1)

OPTL

OPTR

Option for selecting VDDQX(1,2)

VDD

Power (3.3V)(1)

VSS

Ground (0V)

TDI

Test Data Input

TDO

Test Data Output

TCK

Test Logic Clock (10MHz)

TMS

Test Mode Select

TRST

Reset (Initialize TAP Controller)

5628 tbl 01

NOTES:

1. VDD,OPTX,andVDDQXmustbesettoappropriateoperatinglevelspriortoapplyinginputs

ontheI/Osandcontrolsforthatport.

2. OPTXselectstheoperatingvoltagelevelsfortheI/Osandcontrolsonthatport.IfOPTXis

settoVIH(3.3V),thenthatport'sI/Osandcontrolswilloperateat3.3VlevelsandVDDQXmust

besuppliedat3.3V.IfOPTXissettoVIL(0V),thenthatport'sI/Osandaddresscontrolswill

operateat2.5VlevelsandVDDQXmustbesuppliedat2.5V.TheOPTpinsareindependent

ofoneanother—bothportscanoperateat3.3Vlevels,bothcanoperateat2.5Vlevels,oreither

canoperateat3.3Vwiththeotherat2.5V.

3. WhenREPEATXisasserted,thecounterwillresettothelastvalidaddressloadedviaADSX.

4. Accessesbytheportsintospecificbanksarecontrolledbythebankaddresspinsunder

theuser'sdirectcontrol:eachportcanaccessanybankofmemorywiththesharedarray

thatisnotcurrentlybeingaccessedbytheoppositeport(i.e.,BA0L-BA5L

≠BA0R-BA5R).

Intheeventthatbothportstrytoaccessthesamebankatthesametime,neitheraccess

willbevalid,anddataatthetwospecificaddressestargetedbytheportswithinthatbankmay

becorrupted(inthecasethateitherorbothportsarewriting)ormayresultininvalidoutput

(inthecasethatbothportsaretryingtoread).

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