Circuit for biasing row of memory cells
AssigneeMotorola, Inc.
InventorJames J. Stipanuk
Life of this patent
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AssigneeMotorola, Inc.
InventorJames J. Stipanuk
Estimating the term…
A circuit for selecting a row of memory cells of an array is disclosed that reduces selection time, eliminates the need for providing a regulated voltage for biasing an active load, and utilizes the capacitive charge on the lower word line in the selection of the row. The array includes a first voltage terminal, a second voltage terminal, a plurality of word lines, a plurality of bit lines, and a plurality of memory cells, wherein the plurality of memory cells are arranged in a matrix of rows and columns. Each of the cells in a row are coupled between the first voltage terminal and a word line, and each of the cells in a column are coupled between a pair of the bit lines. A word line driver circuit is coupled between bases of active load transistors in each of the memory cells in a row and the word line of that row for selecting that row of memory cells.
A circuit for selecting a row of memory cells in an array of memory cells, said memory cells having a write mode for writing information into one of said selected memory cells, a low current mode for storing said information, and a read mode for reading said information in one of said selected memory cells, said array of memory cells including a first voltage terminal, a second voltage terminal, a plurality of word lines, a plurality of bit lines, wherein said memory cells are arranged in a matrix of rows and columns, each of said memory cells in a row coupled between said first voltage terminal and one of said word lines, each of said memory cells in a column coupled between a pair of said bit lines, each of said memory cells including a pair of load transistors and a transistor means, each load transistor having a base and coupled between said first voltage terminal and said transistor means, said transistor means being further coupled to said one of said word lines and said pair of bit lines for storing said information in response to a signal on said bit lines, a plurality of first means, each of said first means coupled between said one of said word lines of each of said rows and said second voltage terminal for sinking current from said one of said word lines during said write mode and said read mode, said circuit comprising:
A memory circuit including a first voltage terminal and a second voltage terminal, said memory circuit comprising:
Dependencies are inferred from the claim text.