Reliability study of perpendicular STT-MRAM as emerging embedded memory qualified for reflow soldering at 260°C

Abstract

A comprehensive reliability analysis of perpendicular Spin-Transfer-Torque Magnetic Random Access Memory (pSTT-MRAM) is demonstrated that pSTT-MRAM is capable of fast write, more than 107 cycles endurance, less than 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-20</sup> read disturb error rate at 125°C, and 10 years data retention up to 225°C at chip level. Furthermore, we prove for the first time that pSTT-MRAM technology can withstand reflow soldering at 260°C, thus enabling the opportunity for embedded nonvolatile memories in consumer and automotive Microcontrollers (MCUs) applications.