KJ-33000-002 Datasheet KJ-33000-002 | P4-P5

 

Revision:A

ReleaseLevel:ACTIVE

Sheet4of5

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KJ‐33000‐002

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charXspeed[16]={0,15,31,47,63,79,95,111,0,‐15,‐31,‐47,‐63,‐79,‐95,‐111};

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linearlyexpandsthevalueoutputbythejoystickbyindexingtheJoystickXvalueinthe

array.

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LookupXSpeed=Xspeed[JoystickX];

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3.3. LowPowerModes

Therearetwolowpowermodestothejoystick;lowpowerandsleepmode.Toputthe

joystickintolowpowermode,asimplewritetothejoystickwiththeleastsignificantbit

beingaoneisrequired.Toputthejoystickintosleepmode,theleastsignificantbitof

thewritemustbeazero.

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Sample:

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IdleI2C();//WaitforanIdleCondition

StartI2C();//IssueaStartCondition

IdleI2C();//WaitforanIdleCondition

address=0x38<<1|0x00;//JoystickAddressPlusWrite

ack=WriteI2C(address);//Writetheaddressplusread

IdleI2C();//

WaitforanIdleCondition

ack=WriteI2C(0);//PutthejoystickintoLowPwr

NotAckI2C();//IssuetheNo‐AckCondition

IdleI2C();//WaitforanIdleCondition

StopI2C();//ReleasetheBus

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ThisexamplewillputtheJoystickintosleepmode.Thecurrentconsumptionofthe

devicewillbeatitsminimuminthismode.

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 

Revision:A

ReleaseLevel:ACTIVE

Sheet5of5

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KJ‐33000‐002

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4. I

CDemoBoard

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4.1. ClarificationofPins

Forphysicalpinnumber,pleaseseetheproductdatasheet.

DD

‐Analogpowersupply:3.3Vtypical

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–I/Opowersupply,1.8VorconnecttoV

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Test–Connecttoground

ADDR–GNDforaddress0x38,V

foraddress0x39

SCL‐I

Cclockline

Int–notnecessaryforoperation,assertedatchangeofXorY

SDA–I

Cdataline

–Programmingpowersupply:ConnecttoVDD

–Digitalground

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–Digitalpowersupply:3.3Vtypical

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N/C‐Noconnection

–Analogground

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CornerPads–ConnecttogroundforbestRFperformance

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Theinformationcontainedinthisliteratureisbasedonourexperiencetodateandisbelievedtobereliableanditissubjectto

changewithoutnotice.Itisintendedasaguideforusebypersonshavingtechnicalskillattheirowndiscretionandrisk.Wedo

notguaranteefavorableresultsorassumeanyliabilityinconnectionwithitsuse.Dimensionscontainedhereinareforreference

purposesonly.Forspecificdimensionalrequirementsconsultfactory.Thispublicationisnottobetakenasalicensetooperate

under

orrecommendationtoinfrin

ean

existin



atents.Thissu

ersedesandvoidsall

reviousliterature.

P1-P3 P4-P5

KJ-33000-002

Mfr. #:

Buy KJ-33000-002

Manufacturer:

Knowles

Description:

Switch Development Tools MEMS Micro Joystick I2C Development Kit

Lifecycle:

New from this manufacturer.

Delivery:

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Products related to this Datasheet

KJ-33000-002