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[FAQ] In high channel count designs, how do I reduce the number of digital connections to the MCU?

Calvin Chan86
Prodigy 380 points

In high channel count designs, how do I reduce the number of digital connections to the MCU?

  • 0
    TI__Prodigy 380 points

    In order to reduce the number of digital connections to the MCU, a MUX and a decoder can be used with isolated digital input receivers, such as the ISO121x device. Please refer to this TI Design where you can find a 96-Channel Bidirectional Digital Input Module Reference Design schematic.