Circuits, architectures, apparatuses, systems, algorithms, and methods for memory with multiple power supplies and/or multiple low power modes

Circuits, architectures, a system and methods for memories with multiple power supplies and/or multiple low power modes. The circuit generally includes peripheral circuitry operating at a first voltage, a memory array operating at a second voltage, and translation circuitry configured to receive an input from the peripheral circuitry at the first voltage and provide an output to the memory array at the second voltage, the translation circuitry further configured to prevent leakage during a standard operating mode of the memory. The method generally includes operating peripheral circuitry at a first voltage from a first power rail, operating a memory array at the first voltage or a second voltage, the memory array being coupled to a second power rail, coupling the first and second power rails during standard operating mode when the memory array operates at the first voltage, otherwise not coupling the first and second power rails, and reducing leakage in the memory array during a leakage reduction mode by reducing a voltage differential between a ground plane in the memory array and the second power rail.