Memory controller, memory card, and nonvolatile memory system

Abstract

A nonvolatile memory system includes a memory card () and host equipment (). The memory card () includes a nonvolatile memory () including a plurality of physical blocks, and a memory controller () for writing data into the nonvolatile memory (). The host equipment () provides to the memory card () an access instruction that designates a logical address and a channel number. The memory controller () has an address conversion function for converting the logical address into a physical address in the nonvolatile memory (), a write destination determination function for determining in relation to the channel number a physical address in the nonvolatile memory () to which the data is to be written, and a channel management function for individually managing for each channel number a write state in which data of a smaller size than each physical block is written.