Apparatus and method for a semiconductor memory configuration-dependent output buffer supply circuit
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United States of America Patent
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Mar 26, 1996
Grant Date -
N/A
app pub date -
Aug 31, 1994
filing date -
Aug 31, 1994
priority date (Note) -
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Abstract
In a dynamic random access memory in which the number of data buffers is selectable, a buffer supply can be configured by a control signal to provide pump charge capacitance which is appropriate for providing the power required for energizing the selected number of buffers. In response to an external control signal, a second capacitor (or capacitor bank) can be precharged and then applied to the output terminal of buffer supply simultaneously with the precharging and application of the charge on the first capacitor. The dimension of the first capacitor is suitable for a buffer supply for the first buffer configuration and the second capacitor is suitable for a buffer supply for additional buffer amplifiers of the second configuration.
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