| 摘要 |
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. |
