STT-MRAM for Automotive Applications

There is a growing need for fast, endurant, non-volatile solutions for automotive that can meet the harsh requirements of automotive conditions. Automotive applications place severe demands memory devices. In the case of data retention, Automotive Grade 0 requires survival of T ambient 150 °C for 20 years with no loss in data integrity. In order to meet the higher temperature grades, an increase in data retention temperature capability is required. However, simply increasing the data retention can have a negative impact on write voltage, and, consequently, on endurance. Therefore, a similar methodology to improve write distribution as has been used on our 1 Gb memory array for datacenter applications is beneficial when applied to these products.