A Lowpower Highreliability STTMRAM Write Scheme with Realtime Voltage Sensing Module Spin transfer torque magnetic random access memory (STTMRAM) is an emerging nonvolatile memory and is regarded as a next generation memory. Efforts have been made in its write scheme, but the proposed schemes suffer from high write power and reliability issues. In this paper, we propose a lowpower highreliability write scheme with realtime voltage sensing and control module. Write operations are immediately terminated when the states of cells switch as desire, and when the current state match the state to be switched into, write operations will be terminated directly. The scheme is implemented and simulated in SMIC 40nm Logic Low Leakage process. Simulation results show that write power is 0.106pJbit on average, which is 62.5% less than the traditional scheme, and the effective judgment range of write xe2x80x9c0xe2x80x9d and write xe2x80x9c1xe2x80x9d is 408mV and 275mV respectively which is 3.15 times larger than the best previously result to our knowledge to reach high write reliability.

Novel smart card SoC memory architecture based on embedded STTMRAM In the applications of Internet of Things (IoT), the limitations of the common NVM  RAM hybrid memory architecture cannot simultaneously provided the solution of lower power, low resource consumption and nonvolatile which are critical for IoT designing. Spin Transfer Torque Magnetic Random Access Memory (STTMRAM) has become a major candidate for onchip memory because of its ideal memory characteristics, such as nonvolatile, near zero standby leakage power and compatibility with CMOS. Therefore, this paper focuses on the application of STTMRAM in the storage of IoT. We design the eSTTMRAM nonhybrid memory architecture for smart card SoCs. The prototype verification results on Xilinxu0027s ARTIX7 XC7A100T FPGA platform show that the STTMRAMbased memory architecture can greatly improve the operating efficiency of SoC programs and reduce the dynamic power consumption of the system due to data storage.