Method for initializing redundant circuitry
AssigneeTexas Instruments Incorporated
InventorsTakumi Nasu, Hugh P. McAdams
Life of this patent
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Abstract
A method for initilizing redundant circuitry of a semiconductor memory device is disclosed. The method comprises sectioning the redundant circuitry and applying an initilizing pulse to each section of redundant circuitry at a different time during power up. Such a method is useful setting the redundant circuits in a dynamic random access memory device.
Claims5
In a semiconductor memory device having an array of memory cells and redundant array circuits, a method to reduce peak current power drawn by in the redundant array circuits when electrical power is applied to the semiconductor device comprising the steps of:
- producing a power up signal in response to sensing application of power to the device;
- dividing the redundant array circuits into plural redundant array groups;
- generating a timed sequence of plural activation pulses for the respective plural redundant array groups in response to receipt of the power up signal;
- and
- supplying the activation pulses to the respective redundant array groups so that each group receives power in timed sequence to avoid high peak current into the redundant array circuits.
Dependencies are inferred from the claim text.