M24SR04-YDW6T/2 RF/IF and RFID

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The M24SR04-YDW6T/2 is a dual-interface and dynamic non-volatile memory IC designed specifically for use in Radio Frequency Identification (RFID) systems for RF access, monitoring, and other applications. In a nutshell, the M24SR04-YDW6T/2 combines an embedded microcontroller, Serial Peripheral Interface (SPI), I2C, and NFC interface, along with a 4Kbit integrated EEPROM, all in one slim package.

The M24SR04-YDW6T/2 is an ideal candidate for passive RFID designs, enabling its use in long-range RF access systems. The device is designed to eliminate the need for a specialized RFID reader, making it a cost-effective and efficient solution for low-cost RFID systems. It does this by allowing the host to access the device via I2C and SPI interface. Furthermore, the device contains a secure memory structure, with 16 pages of 128-bit memory. As described on the ST website, ‘It supports closing the memory from the outside (RF field) only, and the internal interface (I2C/SPI) can be used to unlock and enable access to the memory items’.

The device can also be used in applications that require a high level of security, such as for authentication and access control, as well as in healthcare and payment systems. It includes a secure internal RAM structure and a ‘secure data counter’ that helps to ensure the integrity of data stored in the device. The secure counter has up to 24-bit counters, which can be used to make sure the data stored on the device is kept secure and only accessed by authorized users. Furthermore, the M24SR04-YDW6T/2 contains a sophisticated Power CPU that ensures the device’s security, enabling it to offer a hardware-level security solution.

In addition to its security features, the device also offers a wide range of features designed to help it stand out from other solutions in its category. For instance, the device includes an on-board temperature sensor, allowing it to monitor its own environment and automatically adjust its functionality accordingly. Furthermore, the device’s low power consumption makes it an ideal choice for applications that require long battery life and low power consumption. The device is designed to be easily integrated into numerous applications, including display panels, smart cards, key fobs, contactless tags, and other systems requiring an identification solution.

To operate the M24SR04-YDW6T/2, the user must first power it up using the on-board power switch. After power is supplied, the host can access the device via the I2C or SPI interface. Once the interface is established, the host can read/write to the memory, access the secure counter, and use the power CPU to provide an additional layer of security. When it comes to RF access, the device contains a built-in NFC antenna that enables it to be polled by an external reader or writer.

In conclusion, the M24SR04-YDW6T/2 is a dual-interface and dynamic non-volatile memory IC designed specifically for use in RFID systems. It features a secure memory structure, temperature sensor, low power consumption and NFC interface, making it an ideal choice for applications such as authentication, access control and healthcare, as well as for contactless tagging and display panels. The device can be easily integrated into a range of systems, and can be accessed via either I2C or SPI interfaces.

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