GNSS module from STMicroelectronics leverages Teseo III chip

STMicroelectronics (ST) is making its Teseo III satellite navigation receiver accessible to a wider designer community by introducing the Teseo-LIV3F module, which integrates essential features to speed application development and also adds up to 16 MB of Flash memory for firmware updating or data logging without a backup battery.

Used by automotive and industrial sectors, ST’s Teseo III multi-constellation receiver combines high accuracy with fast response time and low power consumption, the company said.

The Teseo-LIV3F module now enables makers and small engineering teams without extensive in-house RF expertise to leverage the Teseo III advantages in creating new products in the industrial and consumer market segments such as vehicle trackers, drones, anti-theft devices and pet locators, and systems for services such as fleet-management, tolling, vehicle sharing or public transportation.

The 18-pin, 9.7 x 10.1 millimeter module contains the Teseo III receiver with on-chip power management, UART and I2C interfaces, alongside the Flash memory, an ultra-stable temperature-controlled crystal oscillator (TCXO), and 32kHz real-time clock (RTC).

The documentation and tools delivered with the module contain all the C code needed to drive the module using the STM32 microcontroller, including the use of data-logging, odometer and geofencing to aid development of value-added functionality.

While simplifying application development, Teseo-LIV3F delivers high performance, including -163 dBm tracking sensitivity and 1.5m positioning accuracy (CEP Circular Error Probability) and low-power operation (17µW in standby mode and 75mW when tracking). FCC and CE certifications streamline product testing and accelerates time to market.

Multi-constellation flexibility ensures robust, failure-resistant navigation worldwide, with access to the GPS, GLONASS, Galileo and BeiDou constellations, as well as the Pacific-region Quasi-Zenith Satellite System (QZSS).

The module supports assisted modes — including autonomous ST Assisted GPS (STAGPS) and server-based assisted-GNSS with free server access — to retrieve ephemeris data if satellites are unavailable for fast time to first fix (TTFF). The module also supports standardized augmentation systems to enhance accuracy, including the U.S., European, Japanese/South-East Asia, and Indian Satellite-Based Augmentation Systems (SBAS), and the Radio Technical Commission for Maritime Services (RTCM) differential GPS.

The Teseo-LIV3F module is available now as an 18-pin LLC device.