| 摘要 |
An electronic data processing device, comprising a data processing member provided for controlling, based on first and second encoded data, a secured operation initiated by a user, said device further comprises a memory which is configurable in order to delimit at least one secured memory part within said memory, to each of said secured memory parts there being assigned a dedicated address range, said data processing member comprises N (N≥2) processing units of which M (M≤ N-1) processing units are provided to process said secured operation and at least one of the remaining N-M processing units is provided for processing application data, to each of said M processing units there is assigned at least one of said secured memory parts, said second memory being provided with a memory access controller provided for controlling accesses to said second memory, said memory access controller comprises a memory protection member, provided for storing said memory address ranges assigned to said M processing units, said memory protection member being provided for detecting an access request to said protected memory address, belonging to said ranges, when issued by one of said N-M processing units and for overruling the detected protected address. <IMAGE>
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