US 11,531,579 B2 · Semiconductor device and system using the same

Abstract

A semiconductor device has a timer unit and a processing unit. The timer unit includes a binary counter, a first converter that converts a first count value output from the binary counter to a gray code to output as first gray code data. The processing unit includes a first synchronizer that captures the first gray code data transferred from the timer unit in synchronization with the system clock signal and outputs the captured first gray code data as second gray code data, and a fault detection unit that generates a data for fault detection based on the first gray code data transferred from the timer unit and compares a second count value based on the second gray code data with a third counter value based on the data for fault detection.

Claims9

Dependent claims

A semiconductor device comprising:

a timer unit configured to generate a timer count value;
a processing unit having:
a first synchronizer configured to receive the timer count value in synchronization with a system clock signal for the processing unit;
a second synchronizer configured to receive the timer count value in synchronization with the system clock signal;
a processing execution unit configured to receive a first timer count value indicating the value based on the timer count value received by the first synchronizer;
and
a comparator configured to compare the first timer count value with a second timer count value indicating the value based on the timer count value received by the second synchronizer to output a fault detection signal indicating a fault on a path between the timer unit and the processing unit based on a comparison result.

4 more elements

Dependencies are inferred from the claim text.

Semiconductor device and system using the same

Life of this patent

Semiconductor device and system using the same

Life of this patent

Abstract

Claims9