integrated circuit device

Abstract

To provide an integrated circuit device with a simple structure in which an operation mode of a circuit device main body can be easily switched from an external control device side. It is equipped with: a circuit device main body, which executes a predetermined processing function; a communication control circuit, which performs data communication with an external control device; and an operation mode determination circuit, which determines one of the operation modes of the circuit device main body as A normal mode for executing the processing function or a debug mode for setting execution conditions of the processing function. In particular, it is characterized in that the operation mode determination circuit operates according to the internal clock, and after the reset operation performed by the reset circuit is released, according to the logic state of a specific communication signal for data communication with the control device to generate an operating mode output value determining an operating mode of the circuit arrangement body.

Description

technical field [0001] The present invention relates to an integrated circuit device with a simple structure in which an operation mode of a circuit device main body can be easily switched from an external control device side. Background technique [0002] Recently, various highly functional integrated circuit devices called IPM (Intelligent Power Module) are being developed as control ICs for switching power supplies, for example. Such an integrated circuit device is generally configured to include a circuit device main body that executes predetermined processing functions, and a communication control circuit that performs data communication with an external control device. The circuit device main body includes, for example, a circuit for turning on and off the power semiconductor switching element according to predetermined control information. In addition, the communication control circuit is responsible for, for example, transmitting the operating state of the main body...

AI Technical Summary

Problems solved by technology

In addition, the transition from the serial communication mode or the pulse output mode to the parameter setting mode is to set the control signal supplied from the control device side to a specific communication terminal (port) of the integrated circuit device to [L] level, which is important for the integrated circuit. Interruption of processing work of a circuit arrangement body in a circuit arrangement

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