Overview

The FM25V05-GTR is a 512-Kbit serial F-RAM (Ferroelectric RAM) that provides non-volatile data storage with extremely high endurance and fast write performance. It supports a standard SPI interface up to 40 MHz, operates from a 2.0 V to 3.6 V supply, and performs writes with no delay or wear-leveling requirements. Its ability to sustain 10¹⁴ read/write cycles and retain data for more than a century makes it highly suitable for mission-critical and frequently updated embedded applications.
Core Parameters
| Parameter | Specification |
|---|---|
| Memory Density | 512 Kbit (64 K × 8) |
| Interface | SPI |
| Max Clock Frequency | 40 MHz |
| Supply Voltage | 2.0 V to 3.6 V |
| Read/Write Endurance | 100 trillion (10¹⁴) cycles |
| Data Retention | 151 years (typical) |
| Standby Current | ~90 µA |
| Sleep Current | ~5 µA |
| Active Current | ~300 µA @ 1 MHz |
| Operating Temperature | –40 °C to +85 °C |
| Package | SOIC-8 |
Features
- Non-volatile memory with RAM-like performance
- No write-cycle delay; writes complete at bus speed
- 10¹⁴ write endurance, far exceeding EEPROM and flash
- 40 MHz SPI bus operation
- Single-supply operation from 2.0–3.6 V
- Byte-addressable for flexible data manipulation
- Ultra-low sleep and standby current
- Industrial-grade temperature capability
- Drop-in compatible with many SPI EEPROM/Flash pinouts
Typical Application Scenarios
| Application | Why FM25V05-GTR Is Suitable |
|---|---|
| Industrial data logging | Withstand constant writes without wear-out |
| Real-time sensor recording | No-delay writes prevent data loss during high-frequency updates |
| System configuration storage | Retains parameters for decades after power loss |
| Portable and battery-powered devices | Low voltage and low sleep current extend battery life |
| Reliable event recording | F-RAM ensures long-term integrity even under rapid write conditions |
| EEPROM-to-FRAM upgrades | SPI compatibility simplifies migration |
Performance Comparison
| Feature | FM25V05-GTR | EEPROM | SPI Flash |
|---|---|---|---|
| Endurance | 10¹⁴ cycles | 10⁵–10⁶ | 10⁴–10⁵ |
| Write Speed | Immediate, bus-speed | Slow, requires write cycle | Page-based, requires erase |
| Data Retention | 151 years | 10–30 years | 10–20 years |
| Voltage Range | 2.0–3.6 V | 1.7–5.5 V | Typically 3.3 V |
| Write Granularity | Byte-addressable | Byte/page | Page |
| Risk of data corruption | Very low | Moderate | Higher due to erase/write operations |
The FM25V05-GTR offers dramatically higher endurance and reliability while preserving simplicity through a standard SPI interface.
Conclusion
The FM25V05-GTR is a durable and efficient 512-Kbit SPI F-RAM designed for embedded systems requiring frequent writes, ultra-long data retention, and low power consumption. Its combination of 100-trillion-cycle endurance, instant writes, industrial temperature tolerance, and broad voltage compatibility makes it a reliable choice for logging, parameter storage, real-time monitoring, and long-lifecycle industrial equipment.
Manufacturer Profile

Manufacturer Profile
Infineon Technologies develops a wide portfolio of non-volatile memory solutions, including the F-RAM family used in long-lifecycle, frequent-write, and industrial-grade applications. The FM25V05-GTR belongs to this product line, benefiting from Infineon’s focus on high reliability, robust endurance characteristics, and strong support for embedded and industrial markets.
For more information and to review our available inventory, please contact our team for detailed pricing, current stock levels, and any additional technical support you may need.
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