STM M24LR04E-R 4-Kbit dual interface EEPROM with RFID

Posted on Tuesday, September 25th, 2012 in components, data transfer, documentation, RFID by the machinegeek

STMicroelectronics has introduced the M24LR04E-R 4-Kbit Dual Interface EEPROM with RFID. “The M24LR04E-R device is a dual-interface, electrically erasable programmable memory (EEPROM). It features an I2C interface and can be operated from a VCC power supply. It is also a contactless memory powered by the received carrier electromagnetic wave. The M24LR04E-R is organized as 512 × 8 bits in the I2C mode and as 128 × 32 bits in RF mode. The M24LR04E-R also features an energy harvesting analog output, as well as a user- configurable digital output pin toggling during either RF write in progress or RF busy mode.” This device operates on a single supply voltage between 1.8 – 5.5 volts when using the I2C interface, with RFID operation harvesting energy from the reader device.

Information on managing simultaneous I²C and RF data transfers can be found in STM app note 4125. Use as an NFC vicinity tag is discussed in STM app note AN3408.

Single unit retail pricing on the 8-pin TSSOP package is in the $1.50 range from DigiKey.

Product details can be found in the 142 page PDF datasheet.

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