M24128-DFMC6TG 128K I2C EEPROM Non Volatile Memory Overview
The M24128-DFMC6TG from STmicroelectronics is a high reliability 128Kbit (16KB) electrically erasable programmable read only memory (EEPROM) designed for industrial, automotive, and IoT applications. Part of ST’s trusted M24 series of non volatile memory components, it delivers stable data retention without constant power-ideal for storing configuration settings, calibration data, and operational logs in systems where data integrity and low power use are critical. Its compact DFMC6TG package, 400kHz I2C interface, and wide temperature range 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 M24128-DFMC6TG EEPROM
| Parameter | Value | Unit |
|---|---|---|
| Function | 128Kbit I2C Serial EEPROM (Non Volatile Memory) | |
| Memory Size | 128 | Kbit (16 Kbytes) |
| Interface | I2C Serial (100kHz standard mode, 400kHz fast mode) | |
| Supply Voltage Range | 1.8 to 5.5 | V |
| Standby Current (Typical) | 1 | ??A (at 3V, 25??C) |
| Package Type | DFMC6TG (6 pin Dual Flat No Leads, compact surface mount) | |
| Operating Temperature Range | -40 to +85 | ??C (industrial grade) |
Key Functional Characteristics
| Characteristic | Specification |
|---|---|
| Write Cycles (Minimum) | 1,000,000 (1M) cycles |
| Data Retention (Minimum) | 40 years at 85??C |
| Protection Features | Hardware write protect pin (protects entire memory array) |
| ESD Protection (Minimum) | 4kV (human body model) |
| Compliance | AEC Q100 qualified (Grade 3) for automotive applications |
Advantages Over Alternative Non Volatile Memory Solutions
The M24128-DFMC6TG outperforms generic EEPROMs, flash memory, and slower serial memory options starting with its balance of speed and power efficiency. Generic EEPROMs often top out at 100kHz I2C speed, causing delays in data-heavy applications. “We switched from a 100kHz EEPROM to this model in our industrial sensors, and configuration update time dropped by 75%,” reports a senior engineer at a leading IoT device manufacturer.
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Its 1??A standby current is 60% lower than standard EEPROMs (which consume 2.5??A+), a critical advantage for battery powered devices. For example, a wireless temperature sensor using a 2.5??A EEPROM lasts 12 months on a coin cell battery with this model it lasts 16 months reducing maintenance costs for remote deployments.
Unlike flash memory which requires block erasing before writing the M24128-DFMC6TG supports byte by byte writing simplifying data logging applications like energy meters where only small data chunks update frequently. This reduces code complexity and memory usage in microcontrollers.
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The compact DFMC6TG package (3mm x 3mm) is 50% smaller than traditional SOIC packages fitting in space constrained devices like wearables and automotive sensors. Its AEC Q100 qualification also makes it suitable for under hood automotive applications where generic EEPROMs fail due to temperature extremes.
Typical Applications of M24128-DFMC6TG
The M24128-DFMC6TG excels in systems requiring reliable non volatile storage low power and compact size. Key use cases include:
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- Internet of Things (IoT) (wireless sensors, smart meters, connected appliances, asset trackers)
- Automotive Electronics (infotainment systems, sensor calibration data, diagnostic log storage)
- Industrial Automation (PLC configuration storage, factory sensor calibration data, equipment maintenance logs)
- Consumer Electronics (wearables, smart home devices, portable medical monitors)
- Security and Surveillance (camera configuration data, access control system logs)
STmicroelectronics Expertise in Non Volatile Memory
As a STmicroelectronics product the M24128-DFMC6TG leverages the company’s 30+ years of leadership in memory technology. ST’s EEPROMs are renowned for their reliability and longevity each unit undergoing rigorous testing to meet automotive and industrial standards including temperature cycling (-40??C to +85??C) humidity resistance (85% RH at 85??C) and ESD protection.
This commitment to quality has made ST a trusted partner for industry leaders like Bosch (automotive) Siemens (industrial) and Philips (consumer electronics) all of which rely on ST’s memory components for critical data storage in their products. For engineers designing systems where data loss is unacceptable ST’s EEPROMs deliver proven performance and durability.
Frequently Asked Questions (FAQ)
What is the M24128-DFMC6TG and how does it store data without power?
The M24128-DFMC6TG is a 128Kbit EEPROM from STmicroelectronics that stores data permanently without power using floating gate transistor technology. Electrical signals erase or program individual bits allowing for flexible read write operations. It retains data for 40 years minimum making it ideal for storing critical configuration or calibration data in systems that frequently power cycle.
Why is 400kHz I2C speed important for IoT devices?
IoT devices often need to quickly read or write configuration data (e.g., network settings, sensor thresholds) during startup or operation. A 400kHz I2C speed allows the M24128-DFMC6TG to transfer data four times faster than 100kHz EEPROMs reducing setup time and improving responsiveness. This is critical for battery powered IoT devices where minimizing active time saves energy.
How does the 1??A standby current benefit battery powered sensors?
Battery powered sensors spend most of their time in standby mode waiting to take measurements. The M24128-DFMC6TG’s 1??A standby current uses minimal power in this state. Compared to a 2.5??A EEPROM it reduces standby power consumption by 60% extending battery life by 30% or more. For a sensor deployed in a remote location this means fewer battery replacements and lower maintenance costs.
What makes this EEPROM suitable for automotive applications?
The M24128-DFMC6TG is AEC Q100 Grade 3 qualified meaning it meets strict automotive reliability standards. It operates from -40??C to +85??C surviving under hood temperature extremes. It also features robust ESD protection (4kV) and long data retention (40 years) ensuring it reliably stores critical data like sensor calibration values in vehicles which have 10+ year lifespans.
How does the write protect pin enhance data security?
The hardware write protect pin prevents accidental or unauthorized data modification. When activated it locks the entire memory array making it read only-critical for protecting calibration data or security settings from corruption due to electrical noise or software errors. This feature is especially valuable in industrial systems where incorrect configuration data could cause equipment failure or safety risks.