What is Memory Controller?

A memory controller is a digital circuit that manages the flow of data going to and from a computer's main memory. It can be a separate chip or integrated into another chip, such as a microprocessor. The memory controller's primary function is to translate requests from the processor or other devices into the signals required by the specific type of memory being used (e.g., DDR5, LPDDR5). It handles tasks like memory addressing, refreshing, error detection and correction, and arbitration between multiple requesters. Modern memory controllers significantly impact system performance.