Power grid segmentation for memory arrays

摘要

An apparatus for modifying a voltage level of a memory array power supply is disclosed. A first column may include a first plurality of data storage cells coupled to a first local power supply signal and a second column may include a second plurality of data storage cells coupled to a second local power supply signal. A first switch may be configured to selectively coupled the first local power supply signal to either a first power signal or a second power supply signal dependent upon a value of a first selection signal, and a second switch may be configured to selectively couple the second local power supply signal to either the first power supply signal or the second power supply signal dependent upon a value of a second selection signal.

主权项

1. An apparatus, comprising:
a first column including a first plurality of data storage cells, wherein each data storage cell of the first plurality of data storage cells is coupled to a first local power supply signal; a second column including a second plurality of data storage cells, wherein each data storage cell of the second plurality of data storage cells is coupled to a second local power supply signal; a first switch coupled to the first local power supply signal, a first power supply signal and a second power supply signal, wherein the first switch is configured to selectively couple the first local power supply signal to either the first power supply signal or the second power supply signal dependent upon a value of a first selection signal; and a second switch coupled to the second local power supply signal and the first power supply signal and the second power supply signal, wherein the second switch is configured to selectively couple the second local power supply signal to either the first power supply signal or the second power signal dependent upon a value of a second selection signal.