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article number: 76time: 2024-12-26popularity:2
fast technology reported on december 26 that according to media reports, it is a top academic conference in the international field. IEDM at the 70th annual meeting,
the release of a breakthrough (random access memory) technology advancement from china solves the major challenges facing the technology in mass production.
chituo technology has proposed for the first time the trackless vertical type suitable for large-scale manufacturing SOT-MRAM the device structure has been significantly reduced SOT-MRAM the complexity and difficulty of the process flow and improve the device yield in principle.
what's innovative about this structure is to MTJ place directly between the two bottom electrodes and allows overetching, thereby greatly increasing the etching window and reducing the difficulty of the etching process.
this breakthrough design makes it on a 12-inch wafer SOT-MRAM the bit yield of the device has increased from 99.6% to more than 99.9%, meeting the requirements of large-scale manufacturing.
at the same time, the device achieves a write speed of 2 nanoseconds, with more than 1 trillion writes /number of erase operations (upper measurement time limit) and has the potential to continuously shrink.
traditional solutions
chituo technology innovation program
it is understood that SOT-MRAM with nanosecond write speed and infinite number of erases, it is a promising alternative CPU high-performance non-volatile storage technology at all levels of cache is expected to solve the current problem SRAM problems such as cost and excessive static power consumption.
but SOT-MRAM it is extremely challenging in device manufacturing processes, especially traditional solutions have caused low etch yield in principle, which seriously restricts its large-scale production and application.
（ report ）
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