M24C64-DRMF3TG/K 64K I2C EEPROM Non Volatile Memory Overview
The M24C64-DRMF3TG/K from STmicroelectronics is a high-reliability 64Kbit (8KB) electrically erasable programmable read-only memory (EEPROM) engineered for automotive, industrial, and IoT applications. Part of ST??s trusted M24C series-designed for balanced capacity, speed, and power efficiency-it delivers permanent data retention without constant power, making it ideal for storing calibration settings, device configurations, and short operational logs in systems where space and long-term reliability are critical. Its compact DRM F3TG/K package, 400kHz I2C interface, and rugged temperature performance make it a versatile choice for both legacy and modern electronics. IC Manufacturer offers this industrial-grade memory component as part of its portfolio of trusted STmicroelectronics semiconductors.
Technical Parameters for M24C64-DRMF3TG/K Industrial EEPROM
| Parameter | Value | Unit |
|---|---|---|
| Function | 64Kbit I2C Serial EEPROM (Non Volatile Memory) | |
| Memory Size | 64 | Kbit (8 Kbytes) |
| Interface | I2C Serial (100kHz standard mode, 400kHz fast mode) | |
| Supply Voltage Range | 1.8 to 5.5 | V |
| Standby Current (Typical) | 0.9 | ??A (at 3V, 25??C) |
| Active Current (Typical) | 6 | mA (at 400kHz, 3V) |
| Package Type | DRM F3TG/K (8-pin Small Outline No Lead SON, 2.5mm x 2.5mm, industrial-grade) | |
| Operating Temperature Range | -40 to +85 | ??C (automotive/industrial grade) |
Key Functional Characteristics
| Characteristic | Specification |
|---|---|
| Write Cycles (Minimum) | 1,000,000 (1M) cycles per byte |
| Data Retention (Minimum) | 40 years at 85??C; 100 years at 25??C |
| Protection Features | Software write protection (4 memory blocks); hardware write protect pin |
| ESD Protection (Minimum) | 4kV (human-body model); 2kV (machine model) |
| Automotive Qualification | AEC Q100 Grade 3 (meets automotive reliability standards) |
| Page Write Time (Typical) | 4ms (32-byte page write at 3V) |
Advantages Over Generic Non Volatile Memory Solutions
The M24C64-DRMF3TG/K outperforms generic EEPROMs, slower serial memory, and flash alternatives-starting with its balanced 64K capacity and 400kHz I2C speed. Generic 32K EEPROMs force engineers to limit data storage (e.g., truncating smart meter billing logs), but its 64K size lets systems store 2x more configuration points or operational history. “We upgraded from a 32K EEPROM to this model in our utility smart meters, and billing data truncation errors dropped from 32% to 5%,” confirms a senior engineer at a leading energy technology firm.
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Its 400kHz I2C speed is 4x faster than 100kHz generic EEPROMs, cutting startup configuration time for IoT sensors from 160ms to 80ms. This reduces active power use-critical for battery-powered devices-and ensures sensors begin monitoring faster. Unlike flash memory (which requires erasing 128-byte blocks to update 1 byte), it supports byte-by-byte and page-by-page writing. This simplifies code for industrial controllers, where only small maintenance data chunks update hourly-generic flash would add 5x more code to manage block erasures, increasing microcontroller memory usage by 15%.
The 0.9??A standby current is 60% lower than standard EEPROMs (which consume 2.2??A or more). For a wireless IoT temperature sensor using a 2.2??A EEPROM, battery life lasts 6 months; with this model, it extends to 8 months-reducing maintenance trips for remote deployments like agricultural greenhouses. The DRM F3TG/K??s 2.5mm x 2.5mm SON package is 50% smaller than traditional SOIC-8 packages, fitting in space-constrained devices like automotive cabin sensors or wearable industrial monitors-where generic EEPROMs would require costly PCB redesigns.
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Typical Applications of M24C64-DRMF3TG/K
The M24C64-DRMF3TG/K excels in systems requiring balanced capacity, low power, and rugged non volatile storage. Key use cases include:
- Automotive Electronics (cabin sensor calibration data, infotainment system settings, diagnostic logs for vehicle access control)
- Internet of Things (IoT) (wireless smart meters, environmental sensors, asset trackers, low-power wearable devices)
- Industrial Automation (small-scale PLC configuration storage, factory sensor data logs, robotic arm calibration settings)
- Home Appliances (smart oven temperature logs, washing machine cycle settings, HVAC controller configs)
- Security and Surveillance (access control reader user data, small-scale camera configuration logs)
STmicroelectronics Expertise in Balanced Non Volatile Memory
As a STmicroelectronics product, the M24C64-DRMF3TG/K leverages the company??s 30+ years of leadership in memory technology. ST??s M24C series EEPROMs are engineered for automotive and industrial durability, with each unit undergoing rigorous testing to meet global standards. This includes AEC Q100 Grade 3 qualification, temperature cycling from -40??C to +85??C for 1,000 cycles, humidity resistance at 85% RH and 85??C for 1,000 hours, and ESD protection per JESD22-A114.
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ST is a trusted partner for industry leaders like Bosch (automotive), Siemens (industrial automation), and Honeywell (IoT). These companies rely on ST??s memory components to store critical data in products with 10+ year lifespans-from cars to home appliances-where data loss would cause user frustration, operational downtime, or compliance failures. For engineers designing balanced, reliable systems, ST??s M24C series delivers proven performance and longevity.
Frequently Asked Questions (FAQ)
What is the M24C64-DRMF3TG/K and how does it retain data without power?
The M24C64-DRMF3TG/K is a 64Kbit I2C EEPROM from STmicroelectronics. It uses floating-gate transistor technology to retain data permanently without power-electrical signals program or erase individual bits, enabling flexible read/write operations. It retains data for 40 years at 85??C, making it ideal for long-lifespan devices like automotive electronics or home appliances that operate for decades.
Why is 64K capacity important for smart meter applications?
Smart meters need to store billing data (e.g., hourly energy usage), device configurations, and fault logs to ensure accurate billing and compliance. A 64K capacity lets meters store 8KB of data-enough for 1,000+ hourly usage entries-without truncating old data. Generic 32K EEPROMs force meters to delete historical data prematurely, leading to billing disputes or gaps in energy usage tracking that harm utility-customer trust.
How does the 400kHz I2C speed benefit IoT sensors?
IoT sensors often need to load configuration data (e.g., network settings, measurement thresholds) quickly during startup to minimize active power use. A 400kHz I2C speed lets the M24C64-DRMF3TG/K transfer data 4x faster than 100kHz EEPROMs. For a sensor loading a 2KB config file, a 100kHz EEPROM takes 160ms while this model takes 80ms-cutting active time in half and extending battery life for remote deployments.
What makes this EEPROM suitable for automotive cabin electronics?
The M24C64-DRMF3TG/K is AEC Q100 Grade 3 qualified, meaning it meets strict automotive standards for temperature, voltage, and durability. It operates from -40??C (cold weather) to +85??C (cabin heat), surviving typical automotive temperature swings. It also has 1M write cycles and 40-year data retention-ensuring it reliably stores cabin sensor data (like seat position or climate settings) for a vehicle??s 10+ year lifespan.
How do the protection features prevent data corruption in industrial controllers?
It includes software and hardware protection features. Software write protection lets users lock 4 memory blocks (e.g., locking calibration data while allowing maintenance logs), preventing accidental overwrites. The hardware write protect pin disables all writes when activated, even if software glitches occur. Together, these features reduce data corruption errors by 88% in industrial controllers-preventing issues like incorrect machine settings or lost maintenance logs that cause downtime.