Semiconductor data processing device, time-triggered communication system, and communication system

A semiconductor data processing device comprising a central processing unit for executing commands, a communication control circuit for performing communication control for time-triggered communication and an interrupt control circuit for performing interrupt control to cause the central processing unit to perform processing responding to an interrupt request,

• wherein the communication control circuit has a local time timer used for time-triggered communication and generates a timer interrupt request for time-triggered communication based on time counting by the local time timer;
• wherein the interrupt control circuit performs control such that, when a timer interrupt request for time-triggered communication is received, the central processing unit to respond to the timer interrupt request delays, by a predetermined reservation time, starting interrupt processing;
• wherein the communication control circuit has, as the local time timer, the timer channels on which timing data specifying timings of generating different timer interrupt requests for the types of interrupt processing are individually set and outputs, as a timer interrupt request, a timer interrupt request signal and a cause signal indicating a cause of the interrupt, and
• wherein responding to the timer interrupt request signal and the cause signal, the interrupt control circuit outputs an interrupt signal and interrupt cause data required for branching to interrupt processing to the central processing unit.