MAGNETIC RANDOM ACCESS MEMORY INCLUDING REPAIR OPERATION FOR DETECTIVE CELL IN A ROW UNIT

摘要

PURPOSE: A magnetic random access memory is provided to enable a write operation in multiple input/output method and a defective cell redundancy operation in a row unit. CONSTITUTION: A digit line(130) is prolonged horizontally on a substrate, and a bit line(120) is prolonged vertically on the substrate. A magnetic memory cell(110) has a magnetic free layer whose long axis(a) is arranged horizontally and short axis(b) is arranged vertically on a cross space between the digit line and the bit line. The magnetic memory cell comprises a magnetic pinned layer which is arranged on the digit line and its magnetization direction is pinned along one direction, and a tunneling insulator arranged on the magnetic pinned layer, and the magnetic free layer arranged on the tunneling insulator and connected to the bit line electrically.