Memory device and method having data path with multiple prefetch I/O configurations

摘要

A method of transferring data from a memory array in either a first operating mode or a second operating mode comprises prefetching a first set of 2N data bits in the first operating mode; prefetching a second set of N data bits in the second operating mode; in the first operating mode, transferring the first set of 2N data bits to 2M data bus terminals in respective bursts of N/M bits; and in the second operating mode, transferring the second set of data bits to M data bus terminals in M busts of N/M bits.