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MC33978 and MC34978 Configurable IO Multiple Switch Detection Interface - Fact Sheet
Freescale Semiconductor
The MC33978/MC34978 configurable I/O is an analog switch interface used to translate
22 I/Os onto a single MCU SPI bus, with low power auto-wake modes and programmable wetting currents. Package options are available in an SOIC 32-pin package and significant board reduction is achieved with a reduced footprint in a 5 mm x 5 mm QFN package. Best in class quiescent current at 30 uA typical reduces power consumption. The MC33978 and MC34978 can be set in sleep mode and wake-up automatically upon switch state change. Integrated wetting current that is individually selectable provides a flexible and easy solution for managing a large number of inputs or outputs across long distances.
MC33978
MC34978
Multiple Switch Detection Interface
MSDI
switches
microprocessor
MCU
serial peripheral interface
SPI
analog multiplexer
2014-12-15T13:48:44-06:00
2014-12-15T13:48:53-06:00
2014-12-15T13:48:53-06:00
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