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US 2001/0011337 A1Published application
Programmable multiple sequential sector locking for semicondutor memories
OwnerMassoud Shamshirianinventor
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OwnerMassoud Shamshirianinventor
Estimating the term…
A semiconductor memory such as a flash memory having addressable sectors of stored data with access to the stored data being controlled by control logic includes a register coupled to the control logic and having bits corresponding to data sectors to be protected and a protection code indicating that access to the identified sectors is to be controlled. The protection code can be identified by a single bit in the register to prevent either access to identified sectors or to prevent alteration of data in identified sectors. A plurality of memory sectors can be identified for protection in a single write cycle of the memory thereby improving system performance and simplifying firmware requirements.
A protectable semiconductor memory comprising
In a semiconductor memory having addressable sectors of stored data with access to the stored data being controlled by control logic, apparatus for limiting user access to the stored data comprising a register coupled to the control logic and including bits corresponding to data sectors to be protected and at least one bit for storing a protection code indicating access to identified sectors is to be controlled.
A method of protecting access to data stored in addressable sectors in a semiconductor memory, said memory having control logic to control sector access, said method comprising the steps of:
Dependencies are inferred from the claim text.