Serial EEPROMs with unique ID aids tracking and repairability
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STMicroelectronics has launched a new series of serial EEPROMs featuring a distinctive 128-bit read-only ID (UID). This innovation addresses the increasing market demands for efficient product recognition, tracking, and repairability.
In addition to the conventional EEPROM user-memory space allocated for parameter storage and data logging, the UID is preprogrammed at the ST factory and permanently locked. This feature allows original equipment manufacturers (OEMs) to use the UID for basic product identification and clone detection, providing a cost-effective alternative to entry-level secure elements. Furthermore, the UID supports versioning and upgrade control, further enhancing the capabilities of these serial EEPROMs.
With memory sizes ranging from 32 Kbit to 2 Mbit, each device retains its factory-programmed identity throughout the entire product life cycle, from sourcing and manufacturing to field deployment, maintenance, and eventual disposal. The UID facilitates seamless traceability, ensuring reliable analysis and simplifying equipment reprocessing and repair processes.
Initially available in 64 Kbit and 128 Kbit, the M24xxx-U series leverages ST’s proprietary CMOS EEPROM technology. This process guarantees a high level of reliability, boasting an industry-leading four million write cycles and 200 years of data retention, along with minimal power consumption.
To ease integration, these EEPROM memories are provided in the industry-standard SO8N package and support a wide operating voltage range of 1.7 V to 5.5 V. Additionally, all devices are compatible with multiple I²C bus modes — 100 kHz (standard mode), 400 kHz (fast mode), and 1 MHz (fast mode plus). Support for random and sequential read modes and a comprehensive write-protect mode for the entire memory array ensures flexibility and security.
Furthermore, enhanced ESD/latch-up protection is included, featuring 4 kV Human Body Model ESD protection, making these serial EEPROMs reliable in various applications.
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