Electronic control unit interfaces with controller-configurable input signal conditioning circuitry

Abstract

A controller-configurable input signal conditioning (C-CISC) circuit includes an input node, a first switch, a second switch, and a multiplexer which are operatively coupled with an output pin of a microcontroller. First and second signal conditioning branches of the C-CISC circuit are operatively coupled with an input node and a sensor signal input pin of the microcontroller controller via a first input and a second input of a multiplexer. The C-CISC circuit is configurable in response to a first output of the sensor selection output pin to provide an analog signal input received at the input node to the sensor signal input pin and configurable in response to a second output of the sensor selection output pin to provide a single edge nibble transmission (SENT) signal input received at the input node to the sensor signal input pin.