- 製造終了
- MC34972
MSDI with Suppressed Wake-up
MC34972 アラートの受信
- アーカイブス
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The NXP® MC34972 Multiple Switch Detection Interface (MSDI) with suppressed wake-up is designed to detect the closing and opening of up to 22 switch contacts.
- The switch status, either open or closed, is transferred to the MCU through a serial peripheral interface (SPI)
- The device also features a 22-to-1 analog multiplexer for reading inputs as analog
- The analog input signal is buffered and provided on the AMUX output pin for the MCU to read
製品詳細
ブロック図
Features
System Features
- Designed to operate 5.5 V <= VPWR <= 26 V
- Switch input voltage range: -14 V to VPWR, 40 V Max
- Interfaces directly to MPU using 3.3 V / 5 V SPI protocol
- Selectable wake-up on change of state
- Selectable wetting current (16 or 2 mA)
- Eight programmable inputs (switches to supply or ground)
- 14 switch-to-ground inputs
- Typical standby current - VPWR = 100 µA and VDD = 20 µA
- Active interrupt (INT) on change-of-switch state
- Signal conditioning and switch monitoring device function
- Package termination count: 32
- SSOP32 package type
- SPI interface and input control
- Load supply voltage 5.5 V (Min), 26 V (Max)
- Ambient operating temperature -40 °C (Min), 85 °C (Max)
ドキュメンテーション
クイック・リファレンス ドキュメンテーションの種類.