{"license":"Free for any use with attribution link to rfid-datasheet.com","citation":"RFID-Datasheet.com Chip Database — Roxtron","source":"https://rfid-datasheet.com/chip/m24lr04e-r","methodology":"https://rfid-datasheet.com/methodology","data_notes":"Includes automated enrichment. Null means unknown; last_checked is link availability, not technical review. Manufacturer documents govern specifications.","generated_at":"2026-11-01T19:51:28.579Z","chip":{"id":"c23952c4-f9d0-4780-803f-9a3620aa6a5e","slug":"m24lr04e-r","name":"M24LR04E-R","manufacturer":"STMicroelectronics","frequency_category":"HF 13.56 MHz","short_description":"Dual-interface I2C + RF 13.56MHz ISO 15693","manufacturer_url":"https://vbtdkdldajoxuasljhkm.supabase.co/storage/v1/object/public/datasheets/m24lr04e-r.pdf","frequency":"13.56 MHz","protocol":"ISO/IEC 15693, ISO/IEC 18000-3 mode 1","memory":"4 Kbit (512 bytes) EEPROM","interface":"Dual interface: I2C (400 kHz, 1 MHz) and RF (contactless 13.56 MHz)","temp_range":"-40°C to +85°C","form_factor":"SO8, TSSOP8, UFDFPN8","security":"32-bit password protection, write protection","use_cases":["industrial-iot","asset-tracking","brand-protection"],"engineering_brief":"The M24LR04E-R is a dual-interface EEPROM combining I2C wired communication with 13.56 MHz RF contactless access via ISO 15693 protocol. It provides 4 Kbit of EEPROM accessible through either interface, enabling applications where devices can be configured via I2C during manufacturing and read/updated wirelessly in the field. The chip features energy harvesting capability from the RF field, password protection for secure access, and operates across industrial temperature range, making it ideal for sensor tags, device configuration, and product authentication applications.","enriched":true,"url_status":"ok","link_status":"valid","last_checked":"2026-11-01T03:31:28.371+00:00","last_status_code":200,"last_content_type":"application/pdf","created_at":"2026-06-14T16:30:56.111445+00:00","manufacturer_id":"0c208bcb-2193-4014-9a7f-783bb32a8c9e","chip_type":"tag_ic","dual_interface":true,"is_family_hub":false,"meta_description":"STMicroelectronics M24LR04E-R dual-interface EEPROM with I2C and 13.56MHz RF (ISO 15693), 512-byte memory, ideal for sensor tags and device configuration.","faq":[{"a":"The M24LR04E-R has 4 Kbit (512 bytes) of EEPROM memory that can be accessed through either the I2C interface or the 13.56 MHz RF interface.","q":"What is the memory size of the M24LR04E-R?"},{"a":"The M24LR04E-R is a dual-interface chip supporting both wired I2C communication (at 400 kHz or 1 MHz) and contactless RF communication at 13.56 MHz using ISO 15693 protocol.","q":"What communication interfaces does the M24LR04E-R support?"},{"a":"Yes, the M24LR04E-R features energy harvesting capability from the 13.56 MHz RF field, allowing it to power itself during contactless operations without an external power source.","q":"Does the M24LR04E-R support energy harvesting?"},{"a":"The M24LR04E-R includes 32-bit password protection for secure access control and write protection features to prevent unauthorized memory modification.","q":"What security features does the M24LR04E-R have?"},{"a":"Yes, the M24LR04E-R is fully compatible with ISO 15693 and ISO/IEC 18000-3 mode 1 standards, allowing it to work with standard 13.56 MHz HF RFID readers supporting these protocols.","q":"Is the M24LR04E-R compatible with ISO 15693 readers?"},{"a":"The M24LR04E-R is ideal for applications requiring factory configuration via I2C and field updates via RF, such as sensor tags where parameters are set during manufacturing and data is read wirelessly during deployment.","q":"What is a typical use case for the M24LR04E-R dual interface?"}],"standards":["iso-15693","nfc-forum-type-5"],"alternatives":["1c458247-2296-4087-9df9-9a68bed667f5","8a96cd0b-6895-472f-9c61-557c90358381","6c85f338-24af-4b65-9ac1-0f852c5e1453"],"no_direct_competitor":false,"long_form_html":null,"og_image_url":null,"canonical_url":"https://rfid-datasheet.com/chip/m24lr04e-r"}}