General Description
BD3378MUV-M is a 22-channel Multiple Input Switch Monitor IC that detects the opening and closing of mechanical switches. Once it senses a change in the status of a switch, it sends an interrupt signal to the MCU via a serial peripheral interface (SPI).

FEATUREs
◾ AEC-Q100 Qualified(Note 1)
◾ Uses 3.3V/5.0V SPI Protocol in Communicating with the
   MCU
◾ Serial Communication Error Checking through 8bit-CRC
◾ Thermal Shutdown Protection (TSD)
◾ Power on Reset (POR)
◾ Selectable Source/Sink Current Levels through Register
   Settings
◾ Wetting Current Timer Capability
◾ 8 Source or Sink Input Pins (VPUA)
◾ 14 Source Input Pins
◾ Separable Power Supply
   VPUA: 16ch (INA&INZ), VPUB: 6ch (INB)
◾ Interrupt Notification upon Switch Status Change
◾ 1 Time to 6 Times Matched LPF that Eliminates Input
   Pin Noise
◾ Low Current Consumption (Intermittent Monitoring)
◾ Status Display of Selected Pin at DMUX Pin
   (Note 1) Grade 1.

APPLICATION
◾ Body Control Module