Today,with the increasing demands of embedded systems for"high-speed reading and writing,power failure without losing data,and long-term reliability",SPI MRAM chip is becoming a non-volatile storage choice that more and more electronic engineers pay attention to.This issue introduces the EMI(Energetic Microelectronics)32Mbit SPI MRAM represented by our company.It takes STT-MRAM(Spin Transfer Moment Magnetoresistance)as the storage unit,and realizes fast writing and ultra-high endurance through standard SPI interface,which provides an MRAM chip scheme with both performance and reliability for industrial applications.
1.What is SPI MRAM memory chip
SPI MRAM memory chip is a magnetoresistive random access memory with standard SPI bus as interface.It can be written directly without erasing first,supports byte-level updates,and is naturally nonvolatile-data remains after power failure.After using STT-MRAM memory cell,the device has obvious advantages in reading and writing speed,writing life and anti-interference ability,while retaining the characteristics of few SPI interface pins and simple system integration.
2.Core specification of 32Mbit MRAM memory chip
①capacity:32Mb(4MB),24-bit address space.
②Interface:SPI supporting Single/Dual/Quad IO,compatible with SPI Mode 0 and Mode 3.
③Rate:SDR is up to 108MHz,DDR is up to 54MHz；;Support reading and writing XIP(Execute-in-Place)
④power supply:single power supply,3.3v(2.70–3.60v)or 1.8v(1.8V(1.71-1.98V).
⑤Temperature and packaging:industrial grade 40℃~+85℃;8-pad WSON(5×6mm)and 24-ball FBGA(6×8mm)are RoHS compliant.
With the characteristics of high speed,non-volatility,high durability and low power consumption,32Mbit SPI MRAM memory chip is suitable for industrial control,communication equipment,intelligent instruments,automotive electronics,medical equipment,IoT gateways and other occasions that require high reliability and real-time.SPI MRAM memory chip is expanding the application boundary of embedded nonvolatile memory.For detailed specifications and selection suggestions of 32Mbit SPI MRAM,please contact RAMSUN for samples and technical support.
Keywords：MRAM memory chip
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Shenzhen Ramsun Microelectronics Co.,Ltd（Ramsun International） is a vendor of the seimicondutor componets and the memory IC’s solution with clear market advantage. We still focus on the promotion for some famous semicondutor brand ,and specially take the RAM(Random Access Memory) as our core products.
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