Hybrid nonvolatile ram

Details Hybrid nonvolatile ram Hybrid nonvolatile ram

2007-07-25

2011-12-06

Rutz, Jared (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S119000, C714S014000, C714S024000

Reexamination Certificate

active

08074034

ABSTRACT:
A memory subsystem includes a volatile memory, a nonvolatile memory, and a controller including logic to interface the volatile memory to an external system. The volatile memory is addressable for reading and writing by the external system. The memory subsystem includes a power controller with logic to detect when power from the external system to at least one of the volatile and nonvolatile memories and to the controller fails. When external system power fails, backup power is provided to at least one of the volatile and nonvolatile memories and to the controller for long enough to enable the controller to back up data from the volatile memory to the nonvolatile memory.

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