Invention Grant
US06816401B2 Static random access memory (SRAM) without precharge circuitry 有权
静态随机存取存储器(SRAM),无预充电电路

Static random access memory (SRAM) without precharge circuitry
Abstract:
An SRAM memory includes a pull-up device coupled to each row of word lines in an array of SRAM cells. The pull-up devices are sized such that when a row is selected, the time for the associated word line to fully charge is sufficiently slow such that data stored in the selected SRAM cells are not corrupted during a read operation. By slowly charging the word lines, the corresponding access transistors are also slowly turned on, resulting in the coupled bit lines slowly charging or discharging from the data stored in the SRAM cell. Because there is not a sudden large charge transfer between the stored data and the coupled bit line, the data will not be corrupted during a read operation, and read precharge circuitry is not required.
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