PASSWORD ACCESSIBLE MICROELECTRONIC MEMORY

摘要

A microelectronic memory may be password access protected. A controller may maintain a register with requirements for accessing particular memory locations to initiate a security protocol. A mapping may correlate which regions within a memory array are password protected. Thus, a controller can use a register and the mapping to determine whether a particular granularity of memory is password protected, what the protection is, and what protection should be implemented. As a result, in some embodiments, a programmable password protection scheme may be utilized to control a variety of different types of accesses to particular regions of a memory array.

主权项

1. A method comprising:
receiving, with a controller, a command of a plurality of commands, each command of the plurality of commands indicative of a respective access control mode of a plurality of access control modes; assigning password protection to a first region of memory in response to receipt of the command, the first region included in a first memory; storing a location of the first region in a mapping storage accessible to the controller; and storing an access condition of the first region in an access register accessible to the controller, wherein the access condition is based, at least in part, on the access control mode of the plurality of access control modes, wherein the controller is configured to access the mapping storage and access register when a request to access the first region is received.