Fujitsu FRAM Empowers Industrial RTK GPS Positioning System Storage Solution

With the rapid development of surveying and mapping, drones, and autonomous driving, RTK (Real-Time Kinematic) GPS technology has become a core support due to its centimeter-level positioning accuracy. In the design of RTK GPS systems, the selection of hardware directly affects the real-time performance, reliability, and security of data acquisition. Mainstream hardware solutions typically combine high-precision GNSS receivers, low-power MCUs, and non-volatile memory, with the memory responsible for storing base station coordinates, error correction parameters, and device operation logs. However, traditional storage technologies (such as EEPROM and Flash) have pain points such as slow write speeds, limited erase/write lifetimes, and relatively high power consumption in frequent read/write scenarios, making it difficult to meet the stringent requirements of RTK GPS for data integrity and immediacy.

FRAM (Ferroelectric Random Access Memory) has become an ideal choice for hardware upgrades in RTK GPS systems due to its high-speed read/write capabilities, ultra-long lifespan, low power consumption, and radiation resistance. Its nanosecond write speed ensures real-time updates of critical parameters, a lifespan of over 10¹⁴ erase/write cycles far exceeds traditional solutions, and its delay-free characteristics effectively avoid the risk of data loss, providing reliable support for high-precision positioning systems.

In RTK GPS systems, FRAM plays a role throughout the entire process of data acquisition, processing, and storage. Firstly, its millisecond write capability can accurately record instantaneous coordinates during satellite signal interruptions, avoiding the loss of positioning data due to sudden interference. Secondly, during the dynamic calibration of base station parameters, FRAM supports high-speed random read/write operations, ensuring the real-time effectiveness of error compensation algorithms and enhancing positioning continuity. Additionally, its extremely low power consumption (with operating current at only the microampere level) can extend the battery life of field operation devices. Compared to traditional solutions, FRAM has three main advantages: first, its interference resistance, with the ferroelectric crystal structure naturally immune to magnetic field interference, ensuring data security in complex electromagnetic environments; second, zero-delay write, even if the system suddenly loses power, the written data can still be completely retained; third, simplified system design, non-volatile storage can be achieved without an external battery, reducing hardware complexity and cost. These characteristics make FRAM a stable cornerstone for RTK GPS devices in extreme environments.

The Fujitsu MB85RS2MLY, optimized for industrial applications, has parameters that are highly compatible with the needs of RTK GPS: a 2Mbit storage capacity can accommodate over a million sets of positioning data points, an SPI interface supports a maximum clock frequency of 40MHz, ensuring seamless integration with high-speed MCUs; its operating temperature range covers -40°C to +125°C, easily coping with extreme climates such as deserts and polar regions; and a wide voltage design of 1.8V-3.6V is compatible with mainstream power supply solutions. In RTK GPS applications, the chip's three main advantages are particularly prominent: first, single-byte write operations take only 150ns, a thousand times faster than traditional EEPROMs, significantly reducing the satellite signal parsing cycle; second, data retention time reaches 10 years, meeting the storage needs for the entire device lifecycle; third, it supports unlimited read/write operations, completely eliminating concerns about memory lifespan. As an authorized distributor of Fujitsu FRAM, MANDU can provide R&D teams with full-process support from selection guidance to sample testing. Its technical team has extensive experience in RTK GPS projects and can assist in optimizing memory timing configurations to ensure system stability.

For RTK GPS device R&D engineers, choosing Fujitsu FRAM is not only a technological upgrade but also a comprehensive enhancement of product competitiveness. The MB85RS2MLY chip, with its millisecond-level response, ultra-long lifespan, and industrial-grade reliability, can significantly enhance the positioning accuracy and stability of devices in complex environments. By collaborating with MANDU, R&D teams can quickly obtain customized storage solutions, avoiding project delays caused by memory performance bottlenecks. As RTK GPS technology evolves towards higher precision and lower power consumption, Fujitsu FRAM has become a key component in achieving reliable centimeter-level positioning, helping engineers create positioning products that can truly withstand market scrutiny.

About Mandu Technology

Shenzhen Mandu Technology Co., Ltd. has steadfastly centered its operations on the distribution of high-performance, high-quality, and highly reliable integrated circuit products. Its portfolio encompasses memory chips, differential crystal oscillators, and MCU microcontrollers, while progressively integrating analog signal chain products. The company prides itself on delivering comprehensive and cost-effective solutions to its customers. Its products find applications across a broad spectrum of industries, including but not limited to network communication, industrial control, robotics, medical equipment, personal health, and numerous other fields.

Business: sales@manduic.com

Website: www.manduic.com

Sales: +86 150-1290-5940