Switch Detection Interface, 22 I/Os, Programmable Wetting Current, Temp Sensor, 3.3 V / 5.0 V SPI

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Product Details

Block Diagram

Switch Detection Interface, 22 I/Os, Programmable Wetting Current, Temp Sensor, 3.3 V / 5.0 V SPI

Features

Key Features

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

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The The MC34978 is included in the 10-year program

Key Parametrics

  • Device Function
    switch monitoring
  • Package Termination Count
    32
  • Package Type
    HSOP32, HVQFN32
  • Load Supply Voltage (Min) (V)
    4.5
  • Load Supply Voltage (Max) (V)
    36
  • Interface and Input Control
    SPI
  • Ambient Operating Temperature (Min to Max) (℃)
    -40 to 85

Documentation

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4 documents

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