Abstract:
A method for managing operation of a memory includes determining a status of data stored at a memory address, assigning a code based on the status of the data, and selectively performing a power management operation for an area of a memory that includes the memory address based on the code.
Abstract:
A semiconductor memory cell array is provided which includes a first memory cell array area including first group memory cells arranged in a chip in a matrix of rows and columns and having a first operating speed; and a second memory cell array area including second group memory cells arranged in the chip in a matrix of rows and columns and having a second operating speed different from the first operating speed. The first and second memory cell array areas are accessed by addressing of a DRAM controller.