The FM31L274-GTR is a 4 Mbit low-voltage F-RAM (Ferroelectric Random Access Memory) device manufactured by Ramtron (now Cypress Semiconductor/Infineon). It offers a unique combination of RAM-like speed, non-volatility, and high endurance, making it a superior alternative to traditional EEPROM and battery-backed SRAM. The device communicates via a high-speed Serial Peripheral Interface (SPI) and is designed for applications requiring frequent and rapid data logging.

Applications

• Advanced Metering Infrastructure (AMI)
• Industrial Automation
• Data Logging
• Medical Devices
• Automotive Applications

Features

• 4 Mbit (512K x 8) Nonvolatile Memory
• High Endurance: 10<sup>14 Read/Write Cycles
• High-Speed SPI Interface: Up to 40 MHz
• Low Voltage Operation: 2.0V – 3.6V
• Low Power Consumption: Active current of 2.5mA, Standby current of 6μA
• Write Protection Features
• RoHS Compliant

Benefits

• Instantaneous non-volatile write operations, eliminating data loss concerns
• Virtually unlimited endurance enhances product lifespan
• Low power requirements extend battery life in portable applications
• High-speed interface ensures quick data transfers
• Simplified system design with SPI interface

Technical Specifications

The FM31L274-GTR operates within a supply voltage range of 2.0V to 3.6V, making it suitable for low-power applications. It employs a standard SPI interface for communication, allowing data transfer rates up to 40 MHz. The device features a typical active current of 2.5mA and a standby current of 6μA. The operating temperature range is -40°C to +85°C, which makes it appropriate for industrial environments. The memory array is organized as 512K x 8 bits. The ‘GTR’ suffix typically indicates a specific package type, such as a TSSOP. The device is ideal for applications where frequent and rapid data logging is critical and data integrity is paramount.