Programmable embedded DRAM current monitor

Details Programmable embedded DRAM current monitor Programmable embedded DRAM current monitor

2005-02-15

2005-02-15

Sparks, Donald (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S154000, C713S300000, C365S226000, C365S230010, C361S091100, C361S093900

Reexamination Certificate

active

06857055

ABSTRACT:
This invention provides a method and apparatus for controlling the current drawn in a multi-bank memory device, for example, in a multi-bank memory system. The above and other features and advantages of the invention are achieved by a method and apparatus which controls access to a memory device to prevent an over-current condition. Each memory request is processed for each memory bank as an arbitrated event. A request is coordinated with the local memory controller circuitry controlling access to the memory bank. The memory bank is checked for its availability. The total current demand of the memory device is determined. If the memory bank request would not create an over-current condition and the memory bank is available, then the memory bank request is acknowledged and the memory request is carried out. Also provided is a method of fabricating such a memory device and also a method of operating such a memory device to access a selected memory bank.

REFERENCES:
patent: 6529440 (2003-03-01), Kitamoto et al.
patent: 6535449 (2003-03-01), Miyauchi
patent: 20030156448 (2003-08-01), Hidaka

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