MC33978

22 channel multiple switch detection interface with programmable wetting current

The33978isdesignedtodetecttheclosingandopeningofupto22switchcontacts.Theswitchstatus,eitheropenorclosed,istransferredtothemicroprocessorunit(MCU)throughaserialperipheralinterface(SPI).ThisSMARTMOSdevicealsofeaturesa24-to-1analogmultiplexerforreadingth

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MC33978

22-channel multiple switch detection interface with programmable wetting current

Featuresandbenefits Fullyfunctionaloperationfrom4.5Vto36V •Fullparametricoperationfrom6.0Vto28V •Low-powermodecurrentIBATP=30μAandIDDQ=10μA •22Switchdetectionchannels –14Switch-to-Ground(SG)inputs –8Programmableswitch(SP)inputs –Switch-to-Ground

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MC33978_V01

22-channel multiple switch detection interface with programmable wetting current

Featuresandbenefits Fullyfunctionaloperationfrom4.5Vto36V •Fullparametricoperationfrom6.0Vto28V •Low-powermodecurrentIBATP=30μAandIDDQ=10μA •22Switchdetectionchannels –14Switch-to-Ground(SG)inputs –8Programmableswitch(SP)inputs –Switch-to-Ground

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MC33978AAE

丝印：33978；Package：LQFP-EP；22 channel multiple switch detection interface with programmable wetting current

The33978isdesignedtodetecttheclosingandopeningofupto22switchcontacts.Theswitchstatus,eitheropenorclosed,istransferredtothemicroprocessorunit(MCU)throughaserialperipheralinterface(SPI).ThisSMARTMOSdevicealsofeaturesa24-to-1analogmultiplexerforreadingth

ETC

MC33978AAE

22-channel multiple switch detection interface with programmable wetting current

Featuresandbenefits Fullyfunctionaloperationfrom4.5Vto36V •Fullparametricoperationfrom6.0Vto28V •Low-powermodecurrentIBATP=30μAandIDDQ=10μA •22Switchdetectionchannels –14Switch-to-Ground(SG)inputs –8Programmableswitch(SP)inputs –Switch-to-Ground

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MC33978AEK

丝印：33978；Package：SOICW-EP；22 channel multiple switch detection interface with programmable wetting current

The33978isdesignedtodetecttheclosingandopeningofupto22switchcontacts.Theswitchstatus,eitheropenorclosed,istransferredtothemicroprocessorunit(MCU)throughaserialperipheralinterface(SPI).ThisSMARTMOSdevicealsofeaturesa24-to-1analogmultiplexerforreadingth

ETC

MC33978AEK

22-channel multiple switch detection interface with programmable wetting current

Featuresandbenefits Fullyfunctionaloperationfrom4.5Vto36V •Fullparametricoperationfrom6.0Vto28V •Low-powermodecurrentIBATP=30μAandIDDQ=10μA •22Switchdetectionchannels –14Switch-to-Ground(SG)inputs –8Programmableswitch(SP)inputs –Switch-to-Ground

ETC

MC33978AEK

Switch Detection Interface, 22-switches, 3.3 V / 5.0 V SPI , SOICW-EP 32; • Designed to operate 4.5 V ≤ VBATP ≤ 36 V\n• Switch input voltage range -14 V to VPWR, 36 V Max.\n• Interfaces directly to an MCU using 3.3 V / 5.0 V SPI protocol • Selectable wake-up on change of state\n • Selectable wetting current (2, 6, 8, 10, 12, 14, 16, or 20 mA)\n• 8 programmable inputs (switches to battery or ground) and 14 switch-to-ground inputs\n• Typical standby current - VBATP = 30 uA and VDD = 10 uA\n• Integrated battery and temperature sensing\n;

The NXP® MC33978 is a multiple switch detection interface (MSDI) designed to detect the closing and opening of up to 22 switch contacts. The switch status, either open or closed, is transferred to the microprocessor through a SPI in automotive environments.\nThis SMARTMOS® device features a 24-to-1 analog multiplexer for reading analog inputs\nThe analog input signal is buffered and provided on the analog multiplexer (AMUX) output pin for the MCU to read\nIndividually selectable input currents are available in Normal and Low-Power Mode\nBattery and temperature monitor are included in the IC and available via the AMUX pin\nInterfaces with any MCU that supports SPI communications\n

恩XP

MC33978AES

Switch Detection Interface, 22-switches, 3.3 V / 5.0 V SPI , QFN32; • Designed to operate 4.5 V ≤ VBATP ≤ 36 V\n• Switch input voltage range -14 V to VPWR, 36 V Max.\n• Interfaces directly to an MCU using 3.3 V / 5.0 V SPI protocol • Selectable wake-up on change of state\n • Selectable wetting current (2, 6, 8, 10, 12, 14, 16, or 20 mA)\n• 8 programmable inputs (switches to battery or ground) and 14 switch-to-ground inputs\n• Typical standby current - VBATP = 30 uA and VDD = 10 uA\n• Integrated battery and temperature sensing\n;

The NXP® MC33978 is a multiple switch detection interface (MSDI) designed to detect the closing and opening of up to 22 switch contacts. The switch status, either open or closed, is transferred to the microprocessor through a SPI in automotive environments.\nThis SMARTMOS® device features a 24-to-1 analog multiplexer for reading analog inputs\nThe analog input signal is buffered and provided on the analog multiplexer (AMUX) output pin for the MCU to read\nIndividually selectable input currents are available in Normal and Low-Power Mode\nBattery and temperature monitor are included in the IC and available via the AMUX pin\nInterfaces with any MCU that supports SPI communications\n

恩XP

MC33978AES

丝印：33978；Package：QFN；22 channel multiple switch detection interface with programmable wetting current

The33978isdesignedtodetecttheclosingandopeningofupto22switchcontacts.Theswitchstatus,eitheropenorclosed,istransferredtothemicroprocessorunit(MCU)throughaserialperipheralinterface(SPI).ThisSMARTMOSdevicealsofeaturesa24-to-1analogmultiplexerforreadingth

ETC