STMicroelectronics STA8089GAT

Overview

STA8089GAT from STMicroelectronics is an AEC-Q100 Grade 2 qualified, single-die standalone GNSS receiver IC supporting GPS, Galileo, GLONASS, BeiDou, and QZSS with 48 tracking + 2 fast acquisition channels, -162 dBm indoor tracking sensitivity, and <1 s hot-start TTFF - deployed in automotive in-dash navigation and OEM telematics systems.

For engineers reviewing the STA8089GAT datasheet, STA8089GAT pinout, STA8089GAT application, or STA8089GAT equivalent, key selection considerations include its dual-CAN interface, embedded ARM946 MCU (196 MHz), VFQFPN56 package, automotive temperature range (-40/+105°C), and integrated RF front-end with LNA.

Technical Context

The STA8089GAT integrates a G3BB+ baseband processor handling multi-constellation IF signals at 4.092 MHz (GPS/Galileo), 8.57 MHz (GLONASS), and 10.23 MHz (BeiDou), with sign-magnitude 3-bit ADC digitization and SPI-controllable VGA gain. Its RF tuner accepts 10–52 MHz reference clocks and generates 64×F₀ (4.092 MHz) and 192×F₀ clocks for baseband and MCU subsystems.

The ARM946E-S MCU subsystem operates up to 196 MHz with 16 KB I-cache, 8 KB D-cache, 16 KB high-speed I-TCM, and 128 KB switchable I/D TCM; it supports USB 2.0 full-speed (12 Mbps) with on-chip PHY, two UARTs, one I²C master/slave, two CAN 2.0B controllers, and dual 10-bit SAR ADCs.

Key Specifications

Pinout & Package

STA8089GAT 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.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STA8088GA, STA8089GAT adds 16 tracking channels, dual CAN, USB PHY, and higher sensitivity - enabling autonomous navigation functions without host dependency. Versus u-blox UBX-M8030-KT, it integrates MCU, memory, and peripherals, reducing total BOM cost and PCB area but increasing firmware development scope.

Availability

STA8089GAT is available at Aetrix Electronics and suitable for automotive in-dash navigation, OEM telematics control units, and ADAS sensor fusion modules requiring stable component supply across extended temperature and long product lifecycles.

Supply support for STA8089GAT 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, specializing in automotive, industrial, and power management ICs with vertical manufacturing and AEC-Q100-compliant production lines.

STA8089GAT belongs to the Teseo III family - a series of automotive-grade GNSS SoCs designed specifically for high-reliability positioning in safety-critical vehicle systems, combining RF, baseband, and application processing in a single die.

FAQ

What GNSS constellations does STA8089GAT support?

STA8089GAT supports GPS, Galileo, GLONASS, BeiDou, and QZSS simultaneously using its 48-channel G3BB+ baseband processor. It processes GPS/Galileo signals at 4.092 MHz IF, GLONASS at 8.57 MHz, and BeiDou at 10.23 MHz - enabling robust position fixes in challenging multipath environments like urban canyons.

Does STA8089GAT include an integrated microcontroller?

Yes, STA8089GAT embeds a high-performance ARM946E-S MCU operating up to 196 MHz, with 256 KB SRAM, 16 KB I-cache, and 8 KB D-cache. This enables full execution of the GNSS firmware stack - including acquisition, tracking, navigation, and NMEA output - without requiring an external host processor.

What are the power supply requirements for STA8089GAT?

STA8089GAT requires multiple supply rails: VINL (1.8 V ±5%) for main LDO, VINB (1.6–4.3 V) for backup domain, VDD (1.1–1.32 V) for digital core, VCC_RF/VCC_PLL/VCC_CHAIN (1.2 V ±10%) for analog RF sections, and VddIO (1.8 V ±5% or 3.3 V ±10%) for I/O rings. Internal LDOs generate regulated voltages from VINL and VINB.

Is STA8089GAT pin-compatible with any other ST GNSS receivers?

Yes, STA8089GAT is pin-to-pin compatible with STA8088GA, allowing drop-in replacement in existing designs. Both use the VFQFPN56 (7 × 7 mm) package with identical pinout for power, I/O, RF, and interface signals - simplifying migration while adding dual CAN, USB PHY, and enhanced sensitivity.