Tire Pressure Monitoring

Atmel® offers highly integrated circuits for battery-powered sensor-gauge and base-station applications in tire pressure monitoring systems (TPMS). The TPMS product portfolio includes a low-power Flash-microcontroller RF-transmitter IC family to be used together with separate capacitive pressure or motion sensors, plus a broad range of stand-alone RF transmitter and LF receiver ICs that can be combined with a separate microcontroller or smart sensor devices. These TPMS ICs are suitable for temperatures up to 125°C (extended storage temperatures up to 175°C), and they provide outstanding low current consumption that helps the sensor gauges to reach a lifetime of 10 years.

Atmel®'s standard TPMS system solution includes low-power smart RF microtransmitter ICs and UHF ASK/FSK receivers. The TPMS standard solution is completed by an AVR® automotive microcontroller and LIN System Basis Chip with LIN Transceiver. This solution offers a high-integration level with low system costs. Atmel's POD system includes a 125 kHz built-in channel for waking up sensor modules in defined duty cycles, thus extending the battery life time. Such systems remarkably increase the flexibility of wheel initialization when changing tires by reprogramming the memory. Modes are adjustable from the dashboard.