Designed for trucks and other large vehicles, the FXTH8715 tire pressure monitoring system (TPMS) series is said to be the industry’s smallest (7 x 7 x 2.2 mm) and highest accuracy (±17 kPa) fully integrated wireless TPMS. In a single QFN package, the sensor system integrates pressure and temperature sensors and a single- (Z axis) or dual-axis (X and Z axes) accelerometer with an RF transmitter, a 125 kHz low-frequency receiver, and an 8-bit microcontroller (S08 core) with SIM, interrupt, and debug/monitor. Thus system can intelligently collect and transmit pressure, temperature, and acceleration data to enable sophisticated analytics to not only improve fleet maintenance, but also transform the TPMS into value-added end-node on the Internet of Things.
The series also features the highest operating range in the industry: 100 to 1,500 kPa, versus the nearest competitor’s 100-1,300 kPa. The system’s integrated MCU works with the on-board 512-byte RAM and 16-kbyte Flash memory (8k for a dedicated firmware library and 8k for user applications). Further, dedicated state machines reduced power consumption. The storage and state-machine capabilities permit application flexibility, reducing time to market and supporting rolling encryption for a more secure solution. The FXTH8715 TPMS family is available now for a suggested resale price starting at $5.40 ea / 10,000.
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