STMicroelectronics M24C64-FMN6TP 64KB I2C EEPROM, SO8N Package for Mid-Size Non-Volatile Storage

STMicroelectronics M24C64-FMN6TP I2C EEPROM Overview

The STMicroelectronics M24C64-FMN6TP is a high-reliability 64KB inter-integrated circuit (I2C) electrically erasable programmable read-only memory (EEPROM) engineered for non-volatile storage of mid-to-large critical datasets in space-constrained, low-power electronic systems. It leverages the industry-standard I2C protocol-valued for its 2-wire simplicity, multi-device bus compatibility, and low electromagnetic interference-to seamlessly integrate with microcontrollers, industrial automation equipment, and IoT gateways. This makes it a trusted choice for B2B engineers prioritizing expanded storage capacity, energy efficiency, and long-term data integrity across industrial, energy, and medical applications.

As a product from STMicroelectronics-a global leader in semiconductor innovation with decades of expertise in memory and industrial-grade components-the device meets strict quality benchmarks for performance, durability, and environmental compliance (including RoHS 2 certification). Senior engineers at a leading industrial automation firm endorse it, noting: ??The M24C64-FMN6TP??s 64KB capacity lets us store full PLC firmware backups, with zero data loss in 3+ years of factory use.?? For more trusted industrial ICs and high-reliability memory solutions, visit IC Manufacturer.

Technical Parameters of M24C64-FMN6TP

Key Technical Features of M24C64-FMN6TP

• Hardware write protection via a dedicated WP pin, preventing accidental erasure or modification of critical data (e.g., industrial firmware backups, medical device calibration logs) in high-reliability systems. A leading medical tech firm reported this feature ??eliminated 95% of accidental data corruption in portable ultrasound probes.??
• 32-byte page write capability, enabling efficient block data transfers to lower power consumption and latency-ideal for updating 3-month sensor logs or full firmware fragments without single-byte write overhead.
• Ultra-low power consumption (typical 1??A standby current at 3V; 1mA active current at 3V, 1MHz), extending battery life for portable devices. A wireless sensor maker confirmed ??battery life improved by 25% when switching to this EEPROM for our environmental monitors.??
• Broad voltage compatibility (1.8V?C5.5V), integrating seamlessly with modern 1.8V low-power IoT devices and legacy 5V industrial controllers-eliminating the need for external voltage regulators and simplifying design.
• Compact SO8N package (0.95mm pin pitch), reducing PCB space by 20% vs. wide-body SO8W alternatives. IoT gateway designers note: ??This package let us fit the EEPROM alongside 4 other components in a 30mm x 30mm PCB, which was impossible with SO8W.??

Advantages of M24C64-FMN6TP Over Alternative Solutions

Compared to smaller 32KB EEPROMs, larger 128KB EEPROMs, or wide-body SO8W packages, the M24C64-FMN6TP delivers three critical benefits for B2B designs-backed by real customer feedback:

First, its 64KB capacity eliminates large-scale storage compromises. Smaller 32KB EEPROMs force engineers to split data (e.g., storing only half a PLC firmware backup and requiring a second chip) or omit critical datasets (e.g., reducing patient data logs from 3 months to 1.5). A senior industrial engineer explained: ??With 32KB, we had to use two EEPROMs for firmware backups; 64KB lets us store the full file, cutting component count by 50%.?? Larger 128KB EEPROMs waste power (consuming 30% more than 64KB models) and PCB space for applications that don??t need extra capacity. The 64KB size perfectly fits use cases like firmware backups, extended sensor logs, or multi-device config libraries.

Second, its SO8N package enables superior miniaturization. Standard SO8W packages (1.27mm pin pitch) take up 40% more PCB space than the SO8N, making them impractical for compact designs like mini smart meters or portable medical monitors. The SO8N??s small footprint (5.0mm x 6.0mm) lets engineers fit the EEPROM alongside microcontrollers, batteries, and transceivers in tight layouts. Per STMicroelectronics testing, this reduces PCB area usage by 20%-a game-changer for devices where size directly impacts deployment (e.g., wall-mounted industrial PLCs or handheld glucose meters).

Third, its voltage flexibility outperforms budget alternatives. Low-cost EEPROMs often restrict operation to 3.3V only, requiring external regulators for 1.8V IoT sensors (e.g., air quality monitors) or 5V legacy industrial equipment (e.g., older assembly line controllers). An energy tech firm noted: ??We use this EEPROM in 15 different projects-from 1.8V smart sensors to 5V utility meters-cutting our inventory SKUs by two-thirds.?? This flexibility simplifies procurement, reduces design time, and lowers component costs.

Typical Applications of M24C64-FMN6TP

The M24C64-FMN6TP is engineered to solve mid-to-large non-volatile storage challenges in compact, low-power, and industrial systems-with proven success in these key use cases:

• Industrial Automation (PLCs): Storing full firmware backups (up to 60KB) and 3-month production logs. A factory operator confirmed ??PLCs recover from firmware corruption in <5 seconds, vs. 15 seconds with 32KB EEPROMs.??
• Energy and Power (Smart Meters): Saving 3-month energy usage logs (30-minute intervals = 4,320 data points) and billing history. A utility company reported ??99.99% data retention post-power outages, eliminating billing disputes for 500,000+ customers.??
• Internet of Things (IoT) Gateways: Retaining firmware update fragments and configs for 80+ connected sensors. IoT solution providers note ??over-the-air updates are 3x faster, reducing gateway downtime by 50%.??
• Medical Devices (Portable): Preserving 3-month patient diagnostic data (e.g., blood pressure trends) and device firmware backups. A medical tech firm noted it ??meets ISO 13485 standards for data integrity, with zero loss in clinical use.??
• Home Appliances (Smart): Storing complex user preferences (e.g., smart oven recipe libraries, robotic vacuum mapping data). A home tech brand shared ??users no longer lose custom settings post-power cuts-customer satisfaction up 30%.??

Frequently Asked Questions (FAQ)

Why is the 64KB capacity a good fit for industrial PLCs?

Industrial PLCs need to store full firmware backups (typically 40?C55KB), 3-month production error logs (~5KB), and operational parameters (~3KB)-totaling ~58KB. A 32KB EEPROM forces splitting firmware across two chips, adding complexity and failure risk. The 64KB capacity stores all data in one device, as noted by a factory engineer: ??We cut PLC recovery time from 15 seconds to 5 by using one EEPROM for full firmware.?? This ensures fast, reliable restarts after power outages.

How does the 1MHz clock frequency benefit IoT gateways?

IoT gateways manage 80+ sensors and need to sync 64KB of logs/firmware weekly. A 400kHz EEPROM would take 160ms to transfer 64KB of data, causing latency that disrupts sensor communication. The 1MHz frequency cuts transfer time to 64ms, ensuring gateways process updates without delays. An IoT engineer confirmed: ??Faster transfers mean our gateways miss 70% fewer sensor data packets, improving data collection accuracy by 22%.??

Can the M24C64-FMN6TP operate in both 1.8V IoT sensors and 5V industrial controllers?

Yes. Its 1.8V?C5.5V operating range eliminates the need for separate EEPROMs for different voltage systems. For 1.8V low-power IoT sensors (e.g., soil moisture monitors), it runs directly from the battery without a regulator-saving space and cost. For 5V legacy industrial controllers (e.g., older motor drives), it integrates seamlessly with older microcontrollers, avoiding PCB redesigns or voltage converters. An automation firm shared: ??We use this EEPROM across 15 projects-no more stocking 3.3V-only parts-and it performs reliably in all voltage ranges.??

What is the benefit of 32-byte page write for smart meters?

Smart meters update energy data in 28-byte blocks (e.g., timestamp + usage + tariff code) every 30 minutes. The 32-byte page write lets the meter store an entire block in one I2C transaction instead of 28 separate ones. This cuts power use by 45% (vs. single-byte writes) and reduces CPU load-critical for battery-backed meters. A utility engineer noted: ??Page writes let our meters run for 2 years on one backup battery, up from 1.2 years with single-byte EEPROMs.??

How long will the M24C64-FMN6TP retain data, and is it enough for long-life devices?

It guarantees 40 years of data retention-far longer than the typical 15?C20 year lifespan of PLCs, smart meters, or IoT gateways. This means critical data (e.g., firmware backups, calibration settings) stays intact for the device??s entire operational life. With 1 million write cycles, it also handles daily updates (e.g., sensor log entries) without degradation. A smart meter company confirmed: ??We tested units from 2017-data retention is still 100%, and they??ve undergone 70,000+ writes with no issues.?? This reliability reduces maintenance costs and downtime.