Memory system with burst length shorter than prefetch length

Some embodiments, the invention comprises a system; the system is a storage control unit and bus and first and second memory device. The storage control unit request for reading and writing operation and a pulse on the operation. First and second memory device is the bus and storage control unit the coupling; the first and second memory device is respectively perpendicular to the pulse string length and prefetching length, reading device and request of the pulse string and performing and writing the operation. The descriptions and claim embodiments.