MEMORY CONTROLLER INCORPORATING THEREIN CONTROL CIRCUIT FOR CONTROLLING OUTPUT CURRENT DRIVING CAPACITY OF MEMORY DEVICE AND MEMORY SYSTEM EMPLOYING THE SAME

摘要

PURPOSE: A memory controller incorporating therein a control circuit for controlling an output current driving capacity of a memory device and a memory system employing the same are provided to prevent a glitch of Rambus DRAM caused by an insufficient current flow through an output pin of the Rambus DRAM and reducing a chip area of the Rambus DRAM. CONSTITUTION: A memory controller(25) incorporating therein a control circuit for automatically controlling an output current driving capacity of output drivers(23b), wherein each of output pins are connected to a plurality of channels, respectively and each of the output drivers(23b) drives the output pins(23a), includes a control circuit(25b) for generating control signals to control a current driving capacity of the output drivers(23b) of the semiconductor memory devices(23).