On-vehicle electronic controller

摘要

The invention relates to an on-vehicle electronic controller and intends to lighten the burden on a microprocessor in processing input and output of the controller and miniaturize and standardize the controller. A plurality of ON/OFF data inputted from indirect input interface circuits are transmitted to a RAM memory via a variable filter circuit and a two-way serial communication circuit. A filter constant of the variable filter circuit is set by a constant setting register, and a filter constant stored in the nonvolatile memory is stored in the constant setting register via two-way serial communication circuit.