Memory device capable of communicating with host at different speeds, and data communication system using the memory device

摘要

Provided is a memory device for high speed communication including a low speed data communication port and a low speed data input/output circuit, and a data communication system using the memory device. The memory device includes a high speed port interface for transmitting or receiving data to or from a host at a high speed, and a low speed port interface for transmitting or receiving data to or from the host at a low speed.