Nonvolatile memory protection

Details Nonvolatile memory protection Nonvolatile memory protection

G - Physics

06

F

354/230.83

G06F 1/00 (2006.01) G06F 11/00 (2006.01) G11C 5/14 (2006.01)

Patent

CA 1301358

- 13 - Abstract of the Disclosure A nonvolatile memory protection system for a microprocessor system having a common address bus, to which a nonvolatile memory is connected, interposes a controller connected to the common address bus between the commands generated by the microprocessor and the nonvolatile memory. The controller generates valid commands for the nonvolatile memory upon receiving a predetermined sequence of commands from the microprocessor, disabling the nonvolatile memory in the absence of valid commands. A power protect circuit connected between the microprocessor system power supply and the nonvolatile memory provides a disable signal to the nonvolatile memory during power up and power down of the microprocessor system.

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