Melexis’ EVB90129 is an assembled printed circuit board that simplifies evaluation of the MLX90129 RFID sensor tag IC and to facilitate the development of wireless sensor applications based on the chip. The board was developed to demonstrate a wide range of applications, from fully passive sensor tag operation to complex data-logging. Each of its elements can be reconfigured by means of jumpers.
The board can be powered either by an external voltage supply, the onboard battery or the electromagnetic field from an RFID reader. In addition to the internal temperature sensor of the MLX90129, the EVB90129 embeds three external sensors, light, temperature and potentiometer to demonstrate the flexibility for measurement of a variety of physical quantities. The custom prototyping area allows users to integrate their own sensor or circuit into this evaluation board.
The EVB90129 is capable of storing 128 KB of data in the SPI EEPROM memory connected to the MLX90129. The board can be accessed and controlled through a contactless (RFID) or a contact (SPI) interface. The RFID access to the MLX90129 and the related commands are compliant with the ISO15693 standard. The SPI and other digital inputs/outputs from the MLX90129 are connected to an 8-pin connector of the EVB90129, allowing easy connection to a microcontroller.
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