STMicroelectronics STA2058

Overview

STA2058 from STMicroelectronics is a high-sensitivity GPS baseband IC integrating an ARM7TDMI 66 MHz processor, 256 KB + 16 KB embedded Flash, 64 KB RAM, and a dedicated High-Performance GPS Engine (HPGPS) with -146 dBm acquisition sensitivity and 2 m autonomous accuracy. It serves as the digital baseband companion to the STA5620 RF front-end in TESEO GPS platform designs for portable navigation devices and telematics systems.

For engineers reviewing the STA2058 datasheet, STA2058 pinout, STA2058 application, or STA2058 equivalent, key selection criteria include its dual-package support (LQFP64/LFBGA144), SBAS (WAAS/EGNOS) compliance, external memory interface capability, 4-channel 12-bit sigma-delta ADC, and dual CAN 2.0B controllers - all critical for GPS receiver subsystem integration.

Technical Context

The STA2058 implements a tightly coupled GPS baseband architecture where the ARM7TDMI CPU executes navigation algorithms directly from embedded Flash or external memory via its glueless EMI supporting up to 64 Mbit SRAM/Flash/ROM. Its HPGPS engine includes a 16-channel correlator and Emerald DSP core with 2046×32-bit addressable RAM for real-time signal processing.

Power management integrates multiple low-power modes (WFI, LPWFI, STOP, STANDBY_0/1), a dual-voltage system (1.8 V core / 3.3 V I/O), and independent RTC supply (V18BKP/AVSS) enabling continuous timekeeping during standby. Clock generation uses an internal PLL with programmable reference input (1.5–8.25 MHz) and jitter <2 ns peak-to-peak at 2 MHz output.

Key Specifications

Pinout & Package

LFBGA144 (10 × 10 × 1.7 mm) and LQFP64 (10 × 10 × 1.4 mm) packages are supported, both RoHS-compliant and ECOPACK® certified. Pin functions are package-specific; LFBGA144 provides full peripheral access including EMI, dual CAN, USB, and GPSDAT[1:0], while LQFP64 omits EMI and one GPS data line.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar GPS baseband applications.

Compared with UBX-M8030 and QCC3071, the STA2058 uniquely combines high-sensitivity GPS baseband processing, dual CAN for automotive bus integration, and EMI for expandable memory - making it irreplaceable in TESEO-based designs requiring RF front-end flexibility and vehicle network interoperability.

Availability

STA2058 is available at Aetrix Electronics and suitable for automotive telematics, portable navigation devices, in-vehicle infotainment systems, and asset tracking modules requiring stable component supply across extended product lifecycles.

Supply support for STA2058 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, sensors, power management ICs, and automotive-grade silicon.

The TESEO GPS platform - of which STA2058 is the baseband component - was engineered specifically for cost-sensitive, high-reliability GPS applications in consumer, automotive, and industrial markets, emphasizing low-power operation, SBAS-enhanced accuracy, and seamless integration with ST's RF front-ends.

FAQ

What is the role of STA2058 in the TESEO GPS platform?

The STA2058 is the dedicated GPS baseband processor in the TESEO platform, responsible for digital signal processing of GPS correlation, navigation solution computation, and NMEA data output. It pairs exclusively with the STA5620 RF front-end to form a complete GPS receiver solution, with embedded Flash storing the full GPS firmware stack including acquisition, tracking, and navigation algorithms.

Does STA2058 support Galileo or GLONASS constellations?

No - the STA2058 is a GPS-only baseband IC supporting L1 C/A code reception and SBAS augmentation (WAAS/EGNOS). It does not implement Galileo E1, GLONASS L1, or BeiDou B1 signal processing. Multi-constellation capability requires newer ST platforms such as Teseo III (STA8088) or u-blox M8 series alternatives.

Can STA2058 operate without external memory?

Yes - the embedded 256 KB + 16 KB Flash and 64 KB RAM are sufficient to run the complete GPS firmware stack, including acquisition, tracking, navigation, and NMEA output. External memory via EMI is optional and used only for expanded functionality such as map caching, extended logging, or custom application code beyond the base GPS functionality.

What power modes are available and how do they affect GPS performance?

The STA2058 offers five power modes: RUN (66 MHz), WFI (1 MHz), LPWFI (32 kHz), STOP (Flash/VReg off), and STANDBY_0/1 (RTC active). GPS tracking is only possible in RUN/WFI modes; STANDBY_0 (3–10 µA) preserves RTC and wake-up capability but suspends GPS operation. Cold/warm start times increase when resuming from STOP/STANDBY due to reinitialization overhead.