FIELD: information technology.
SUBSTANCE: method of refreshing a dynamic random-access memory (DRAM) array in form of independently refreshable memory units, comprising: associating an indicator with each independently refreshable memory unit; upon writing data to an independently refreshable memory unit, setting the associated indicator to reflect valid data; increasing delay between refreshing operations in proportion to the zero number of suppressed refreshing cycles, wherein a refreshing cycle is suppressed if the associated indicator reflects invalid data, so that only all independently refreshable memory units, which contain valid data, can be refreshed with maximum period of refreshing; and refreshing with said maximum period of refreshing only the independently refreshable memory units whose associated indicator reflects valid data stored therein.
EFFECT: reducing DRAM power consumption.
26 cl, 6 dwg
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