STMicroelectronics STA8089GATD

Overview

STA8089GATD from STMicroelectronics is an AEC-Q100 Grade 2 qualified, single-die automotive GNSS receiver IC supporting GPS/Galileo/GLONASS/BeiDou/QZSS with 48 tracking + 2 fast-acquisition channels, -162 dBm indoor tracking sensitivity, <1 s hot-start TTFF, and integrated ARM946 MCU (196 MHz), USB 2.0 full-speed PHY, dual CAN, dual UART, I²C, SQI Flash interface, RTC, and 2×10-bit ADC - deployed in OEM in-dash navigation and telematics systems.

For engineers reviewing the STA8089GATD datasheet, STA8089GATD pinout, STA8089GATD application, or STA8089GATD equivalent, key selection criteria include multi-constellation dead reckoning capability (TESEO-DRAW), VFQFPN56 automotive package compliance, dual CAN bus integration for vehicle network interfacing, RF front-end LNA+VGA co-integration, and backup supply operation down to 1.6 V for battery-backed RTC and standby retention.

Technical Context

The STA8089GATD integrates a G3BB+ baseband processor that simultaneously processes Galileo/GPS (4.092 MHz IF), GLONASS (8.57 MHz IF), and BeiDou (10.23 MHz IF) signals using sign-magnitude 3-bit digitization, with on-chip VGA gain control via SPI and internal integration of magnitude bits for automatic gain adjustment.

Its RF front-end employs ST's CMOSRF technology to down-convert RF bands directly to IF without external SAW filters, while the ARM946 subsystem runs positioning firmware and TESEO-DRAW dead reckoning logic, supported by 256 KB SRAM, dedicated TCM, and dual voltage domains (1.2 V core / 1.8 V or 3.3 V I/O).

Key Specifications

Pinout & Package

STA8089GATD is housed in a VFQFPN56 (7 × 7 × 1.0 mm) package with 0.4 mm pitch, thermally enhanced exposed pad, and automotive-grade mold compound. Pin assignment follows ST's standardized layout for Teseo III family, supporting drop-in compatibility with STA8088GA.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar GNSS receiver applications.

Compared with STA8088GA, STA8089GATD adds dead reckoning and 2 dB better sensitivity; versus u-blox M8030-KT, it reduces BOM count by integrating MCU, CAN, USB PHY, and RF front-end - lowering total system cost and board space in automotive ECU designs.

Availability

STA8089GATD is available at Aetrix Electronics and suitable for in-dash navigation systems, OEM telematics control units, and fleet management terminals requiring stable component supply across extended automotive temperature ranges and long production lifecycles.

Supply support for STA8089GATD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, MEMS, and automotive-grade chips for industrial, automotive, and consumer markets.

STA8089GATD belongs to the Teseo III GNSS receiver product line, engineered specifically for automotive positioning applications demanding AEC-Q100 compliance, multi-constellation support, and integrated dead reckoning - enabling reliable navigation in challenging signal environments.

FAQ

What GNSS constellations does STA8089GATD support?

STA8089GATD supports GPS (USA), Galileo (EU), GLONASS (Russia), BeiDou (China), and QZSS (Japan) simultaneously. Its G3BB+ baseband processor handles all five constellations natively, enabling concurrent signal acquisition and tracking - critical for maintaining position accuracy in obstructed urban or mountainous environments where satellite visibility per system is limited.

Does STA8089GATD require an external crystal oscillator?

Yes - STA8089GATD requires a 32.768 kHz crystal connected between XTAL_IN and XTAL_OUT pins to drive its real-time clock and backup domain. The device does not integrate a crystal; however, it supports external TCXOs for improved timing stability in temperature-varying automotive cabins, and the oscillator amplifier meets ST's specified load capacitance and drive level requirements per DS11777 Rev 5 Section 4.8.3.

How is TESEO-DRAW firmware loaded and executed on STA8089GATD?

TESEO-DRAW is preloaded into the device's embedded 256 KB SRAM at boot or loaded dynamically via UART/USB from external flash. It runs exclusively on the integrated ARM946E-S core, using GPIO, CAN, and ADC inputs to fuse GNSS data with vehicle motion signals - no host processor involvement is required. Firmware updates are performed through ST's official STSW-LINK009 tool and validated binaries.

Can STA8089GATD operate without the main 1.8 V supply?

Yes - when VINL (1.8 V main supply) is absent, STA8089GATD enters backup mode powered solely by VINB (1.6–4.3 V). In this state, RTC, BKRAM, and wake-up circuitry remain active; STDBY_OUT signals standby status; and the device retains last-known position and time. Full functionality resumes within 200 µs of VINL restoration, as specified in Table 3 footnote 1.