Fujitsu FRAM Metering System: Storage Technology Innovation and Industrial-Grade Application Practices

Under the wave of industrial automation and intelligence, metering systems—serving as the core carrier for data acquisition and process control—must be designed for high reliability, ultra-low power, and real-time responsiveness. Traditional meters have long relied on EEPROM or Flash memory, yet these solutions suffer from slow write speeds (typical latency 5–10 ms), limited endurance (<100 k000 erase/write cycles), and high power consumption (34 mW during erase/write). Ferroelectric RAM (FRAM) shatters these bottlenecks with nanosecond-level writes (150 ns), 10 trillion-cycle endurance, and ultra-low energy (220 nJ per write). Its no-erase, XIP (execute-in-place) capability slashes system response times, while hardware-grade data protection guarantees data integrity across extreme temperatures (-40 °C to +125 °C) and intense vibration.

In modern meters, 64-Kbit FRAM acts as the pivotal storage element, handling three mission-critical tasks: real-time data buffering, configuration-parameter storage, and historical-record management. In smart electricity meters, for instance, thousands of energy-parameter fluctuations must be logged every second; legacy solutions risk data loss due to high write latency, whereas FRAM boosts throughput to 480 Mbps, ensuring millisecond-level responsiveness. A single 64-Kbit device can store up to ten years of operation logs, and thanks to FRAM’s “battery-free backup” characteristic, power-failure data loss is eliminated. In industrial flow meters, FRAM’s cyclic-write mode prevents the memory-cell aging that plagues EEPROM, tripling device MTBF.

Fujitsu, the global leader in FRAM technology, sets the industry benchmark with its 64-Kbit MB85RS64VY:

• Blazing speed: 100 kHz standard and 400 kHz fast modes, SPI throughput up to 480 Mbps for real-time, high-frequency data logging.  

• Extreme endurance: 10¹³ erase/write cycles—10,000× that of EEPROM—built for harsh industrial duty.  

• Ultra-low power: 500 µA active, 5 µA standby, cutting energy draw by 90 %.  

• Industrial-grade reliability: -40 °C to +85 °C operation, AEC-Q100 qualified for automotive and high-temperature scenarios.

In metering systems, the MB85RS64VY’s 64-Kbit capacity accommodates firmware, calibration data, and three months of runtime records within an 8-pin SOIC package that saves 60 % board space and connects directly to the MCU without extra drivers.

Mandu Technology, Fujitsu’s authorized FRAM distributor in China, delivers end-to-end support—from device selection to mass production:

• Application tailoring: storage optimization for HART-protocol meters, wireless AMR terminals, and more.  

• Rapid sampling: engineering samples shipped within 48 hours to accelerate validation cycles.  

• Customization: OTP (one-time-programmable) development for encrypted storage of sensitive data.

Five core values for design engineers choosing Fujitsu FRAM:

1. Performance leap: 100 µs-class writes eliminate data-throughput bottlenecks.  

2. Reliability revolution: 10-trillion-cycle endurance safeguards data for the product’s entire lifetime.  

3. Energy breakthrough: 1 µA standby current extends battery-powered meter life beyond five years.  

4. Design simplicity: pin-compatible with EEPROM—no hardware redesign required.  

5. Localized service: Mandu Technology offers 7×24 technical response and failure analysis.

Driven by Industry 4.0 and dual-carbon goals, the intelligent upgrade of metering systems is imperative. Fujitsu FRAM, combining ultra-fast, ultra-durable, and ultra-low-power strengths, redefines data-storage standards. Choosing Fujitsu FRAM is choosing a high-reliability, long-life solution for smart meters.

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

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