Power gated and voltage biased memory circuit for reducing power

Abstract

A circuit system includes: a plurality of memory blocks; a power supply circuit configured to supply operating power and substrate power to the plurality of memory blocks; a plurality of first power supply switches configured to control whether or not the operating power is supplied from the power supply circuit to the plurality of memory blocks; and a control circuit configured to control the power supply circuit and the plurality of first power supply switches, wherein the control circuit changes a voltage of the operating power to be supplied by the power supply circuit and a voltage of the substrate power to be supplied by the power supply circuit, based on a state of whether the first power supply switches are in a supplying state or a blocking state.

Dependencies are inferred from the claim text.