Device and method for selective reduced power mode in volatile memory units

摘要

An information processing device comprises a first memory, a second memory, data transfer circuitry, power gating circuitry, and a controller. The first memory comprises at least two volatile memory units. The controller receives or generates a request for setting the information processing device into a reduced power mode; in response to the request, it selects specific memory units among the memory units; controls the data transfer circuitry to transfer data from the selected memory units to the second memory; and controls the power gating circuitry to power down the selected memory units.

主权项

1. An information processing device, comprising:
a first memory comprising at least two volatile memory units; a second memory; data transfer circuitry coupled to the first memory and to the second memory; power gating circuitry coupled to the first memory; and a controller programmed to: receive or generate a request for setting the information processing device into a reduced power mode; in response to the request, select specific memory units among the memory units on the basis of a desired state of the information processing device to be assumed on exiting the reduced power mode; control the data transfer circuitry to transfer data from the selected memory units to the second memory; and control the power gating circuitry to power down only the selected memory units.