Longsys Electronics Foresee Embedded Storage Brand Includes Serial Peripheral Interface NAND Flash Products

With the upcoming data explosion in the 5G era, the IoT poses higher requirements for storage chips.

Despite richer and more intricate functions of the electronic products, their size is getting more compact, and memory chips are developing towards miniaturization. With over 20 years’ experience and technical improvements, Foresee’s Longsys Electronics Co. Ltd. embedded storage brand, launched Serial Peripheral Interface (SPI) NAND flash products, which meet the requirements on miniaturization and portability of mobile electronic products. Upon various tests and verification, it is leading in capacity and performance.

Background
In the past, the functions of electronic products were simple, which requires less programs and codes. Generally, programs stored with NOR flash would be enough to meet the needs. However, the functions of electronic products now are becoming richer and intricate, which requires a large number of programs and codes. The NOR flash no longer meets production needs due to its small capacity and high price per unit of capacity. The NAND flash emerges at this historic moment. Typical NAND flash small-capacity products range from 1Gb to 4Gb, and the price per unit of capacity is lower than that of the NOR flash.

Foresee SPI NAND flash products and their features:

• 16nm process, more advanced
  At present, most NAND flash products available on the market adopt the 2X to 3Xnm process, while Longsys uses 16nm, featuring higher technical edges. Meanwhile, the built-in ECC (4b/512B) unit eliminates the need for MCU which acts as hardware or software ECC, and lowers the requirements for hardware error-correcting capability of the host. With the SPI controller solution, only the SPI interface is required for the host. Consequently, the removal of a conventional NAND controller cuts the costs of the host.

• Multi-directional performance improvement
  With high clock rate, 108MHz fast access, 4-channel I/O data transmission rate up to 432Mb/s, the data transmission efficiency is improved. The 2KB high-speed cache improves the access performance of the NAND flash and enables fast random access.

• Reliability ensured by rigorous tests
  The SPI NAND flash products have passed reliability verification (such as a HTOL test with 77pcs/3lot 1,000 hours) according to JEDEC standards, various chip-level tests (nearly 50 major items, a total of 80 sub-items) by the company’s R&D and test teams, and the stability test designed by Longsys. The on-off function of the products is verified from multiple perspectives. Therefore, SPI NAND flash products are stable and reliable. In addition, it features high endurance with up to 100,000 program/erase cycles. It also boasts a 10-year data retention, delivering high quality.

• Larger secure storage space
  With a 20KB One Time Programmable (OTP) area, where data is not erasable, software encryption can be achieved based on the unique ID of chips. In addition, the 20KB OTP areas, which are larger than common 16KB ones, allow more room for securely storing information.

• WSON package, compact size
  It adopts the mainstream WSON package (8mmx6mm) with 8 chip pins, enabling a size which is 80% smaller than the conventional TSOP package (20mmx12mm). In this way, the number of PCB layers and PCB size are reduced, enabling lower design costs.

Application
Currently, the Foresee SPI NAND flash products have been used in various sectors and presented performance when used in the PON, DVB, IPC, AI speakers, routers, smart access control, smart hardware and other products.

The SPI NAND flash is a member of the Foresee micro-storage product family, which also include the SLC Parallel NAND, DDR, NAND-based MCP, SPI NOR, and T-flash. Each product has undergone high and low temperature test ant tests for aging and wear, program/erase cycles, and overall reliability.

Now the Foresee micro-storage products have completed AVL verification by 25 main platforms in over 100 main control models. With easy integration, performance and compatibility, these products have been delivered to more than 200 customers worldwide.

In the future, Foresee micro-storage products will serve the booming sectors in an all-round manner, such as the IoT, smart ecology, electric automobiles, vehicle equipment, and smart home. Taking ‘products are the soul of the brand’, and quality is the life of the brand’ as its principle, the company keeps delivering performance, stable storage products and solutions to users.

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