MCRF202

Absolute Maximum Ratings(†)
Storage temperature .....................................................................................................................- 65°C to +150°C
Ambient temperature with power applied.......................................................................................-40°C to +125°C
Maximum current into coil pads ..........................................................................................................................50 mA

† NOTICE: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those
indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

The MCRF202 is a passive Radio Frequency Identification (RFID) device that provides an RF interface for reading the contents of a user memory array. This device is specially designed to detect the logic state of an external sensor, and alters its data transmissions, based on the condition of the sensor input. The device outputs a normal bit data stream if the sensor input has a logic '1' state, but outputs an inverted data stream for a logic '0' state. In this way, the reader can monitor the state (condition) of the external sensor input by detecting whether the data from the device is a normal or inverted data stream.

The device is powered by rectifying the incoming RF carrier signal that is transmitted from the reader. When MCRF202 develops sufficient DC voltage, it transmits the contents of its memory array by modulating the incoming RF carrier signal. The reader is able to detect the modulation and decodes the data being transmitted. Code length, modulation option, encoding option, and bit rate are set at the factory to fit the needs of particular applications.

The MCRF202 is available in die, wafer, PDIP and SOIC packages. The encoding, modulation, bit rate options, and data fields are specified by the customer and programmed by Microchip Technology Inc. prior to shipment. See Technical Bulletin TB023 for more information on factory serialization (SQTP™).