MC33975TEK

• Product introduction

MC33975TEKand32MarestrainWake-up capabilitytargetMultiwayswitchDetect interfaces

33975is used for detection22pieceSwitch contactstargetTurn off and onfinishMulti-switch detection interfacewith inhibitionawaken。Open or closed，shouldthe state of the switch,Transfer toVia serial peripheralsInterface (SPI)of microprocessorsUnit (MCU)。The device also has 22-1mockMultiplexer forRead the input dataAs a simulation。 33975equipmentYesTwo modes of operation，Normal mode anddormancy。Normal modeProgramming is allowedof equipment andSuppliesSwitch contactswith pull-upor drop-downcurrentsurveillanceswitchStatus change。Sleep modeofferlow quiescent current,This makes33975Low requirementsSleep statecurrentforAutomotive and industrial productstargetidealchoose。
Provided by Freescalemultipleswitch, micellar sweepInterface devices。 33975equipmentofferThe following improvements have been made:(i)Programmable interruptstimerCan be disabledSleep mode，（b) SwitchdetectswitchTo the groundinputcurrent32 mA and4.0 mAhtarget，（C）interrupt bitsbeOneReset，and (d)targetwrapbeLead-free32 pinsof the exposed pad。
peculiarity
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Design workat5.5 V≤VPWR≤28 V
Switch input voltagerange-14 V，40 VutmostVPWR
Can be directly withMicroprocessor adoption3.3 V/5.0 V SPIagreement
OptionalChange of stateawaken
Optionalof wet current (32 mA or4.0 mAswitchTo the groundinput）
8pieceProgrammable inputs（Switch toBattery or ground）
14Switch toearthinput
VPWRStandby currentis 100 μAtypical，VDDStandby current20μAtypical
Lead-freePackage specifyingThe suffix codeEK
shouldProduct containsAt FreescaleproductsLongevity program，guaranteesupplyAt least 15yearafterlaunch

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