Data check circuit

Abstract

A data check circuit comprising: a request signal output circuit configured to output a request signal for requesting occupation of a bus to an arbitration circuit configured to arbitrate the occupation of the bus, when a CPU connected, as a bus master, with the bus for accessing a memory outputs an instruction signal for providing an instruction for starting detection of whether or not data stored in the memory is correct; a data acquisition circuit configured to acquire data stored in the memory through the bus, when the arbitration circuit outputs a permission signal for permitting the occupation of the bus based on the request signal; and a data processing circuit configured to perform processing for detecting whether or not the acquired data is correct, the acquired data acquired by the data acquisition circuit.

Dependencies are inferred from the claim text.