MRAM (magnetic random access memory)-NAND controller and SMD (surface mount device) SSD (solid state drive)

Abstract

The invention provides an MRAM (magnetic random access memory)-NAND controller which comprises an MRAM module, a host interface and an NAND controller, wherein the host interface adopts a DDR DRAM (double data rate dynamic random access memory) interface standard. The invention further provides an SMD (surface mount device) SSD (solid state drive) which comprises the MRAM-NAND controller and an NAND module. According to the MRAM-NAND controller and the SMD SSD, the MRAM-NAND controller and POP (package on package) and 3D SIC packaging techniques are adopted, so that the size of the SMD SSD is smaller, and the SSD can be mounted directly to a mainboard, and can be applied to a computer as well as a tablet computer and a mobile phone; the host interface of the MRAM-NAND controller adopts a DDR DRAM interface, and accordingly, the read-write speed of the SMD SSD is increased greatly; and the MRAM module exchanges data with a NAND chip through a DMA (direct memory access) controller, and increase of the read-write speed is facilitated.

Description

technical field [0001] The invention relates to a solid state hard disk, in particular to an MRAM-NAND controller and a patch type solid state hard disk. Background technique [0002] Solid State Drives (SSD), referred to as solid disks, are hard disks made of solid-state electronic storage chip arrays, consisting of a control unit and a storage unit (FLASH chip, DRAM chip). The specifications and definitions of interfaces, functions and usage methods of solid-state hard disks are exactly the same as those of ordinary hard disks, and the shape and size of the products are also completely consistent with ordinary hard disks. It is widely used in military, vehicle, industrial control, video surveillance, network monitoring, network terminals, electric power, medical, aviation, navigation equipment and other fields. [0003] The development of NAND flash memory technology has promoted the SSD industry, such as figure 1 As shown, the solid-state hard drive includes a set of NA...

AI Technical Summary

Problems solved by technology

[0012] However, increasing the reading and writing speed requires expanding the width of the NAND connection, such as extending from 16bit to 32bit or 64bit. This is also very difficult for mobile phones. A wider NAND interface means more chip pins and higher chip packaging costs. , more difficult motherboard design and higher production SMT cost

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