STA2058EXATR

Specialized Overview

The STA2058EXATR is a high-sensitivity GPS baseband processor from the TESEO platform, manufactured by STMicroelectronics. It integrates an ARM7TDMI CPU running at up to 66 MHz with embedded Flash (256 KB + 16 KB) and 64 KB RAM. The device features a High Performance GPS Engine (HPGPS) supporting SBAS (WAAS/EGNOS), achieving -146 dBm acquisition sensitivity and 2 m autonomous accuracy. It includes an External Memory Interface (EMI) for up to 64 Mbit external memory, extensive connectivity (4 UARTs, 2 SPIs, 2 I2Cs, 2 CANs, USB 1.1, HDLC), and operates within a -40 °C to 85 °C range in a 144-pin LFBGA package.

Specialized Feature Summary

• Integrated ARM7TDMI processor with embedded Flash and RAM for standalone GPS software execution
• High-sensitivity HPGPS engine with SBAS support and low power consumption modes
• Extensive peripheral interface set including dual CAN, USB, and multiple serial communication ports
• External Memory Interface (EMI) enabling expansion with up to 64 Mbit of SRAM or Flash

Specialized Applications

• Portable Navigation Devices (PND)
• In-vehicle navigation and telematics systems
• Consumer handheld GPS devices

Specialized Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm the specific ordering suffix 'EXATR' corresponds to the LFBGA144 package with tape-and-reel packing and automotive grade qualification. Request official datasheets and certificates of conformity to ensure compliance with RoHS standards and environmental specifications prior to procurement.

Specialized Selection Notes

Select this component when a dedicated GPS baseband solution with integrated processing and memory is required. The EMI capability allows flexibility in system memory configuration beyond internal limits. Ensure the design supports the 3.0 V to 3.6 V I/O supply and 1.8 V core voltage requirements. Consider the LFBGA144 package constraints for PCB layout and thermal management during the hardware design phase.

Specialized Part Context

The STA2058 serves as the baseband processor for the TESEO GPS platform, typically paired with the STA5620 RF Front-End. It represents a single-chip solution combining signal processing, host microcontroller functions, and memory. This integration reduces board space and simplifies system architecture compared to discrete GPS receiver designs, targeting applications requiring robust positioning capabilities.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the STA2058 is listed as an obsolete product, engineers should consult STMicroelectronics for current generation alternatives or legacy support options. Verify pin compatibility and software library availability if transitioning to newer GPS baseband models.

Specialized FAQ

What is the maximum operating frequency of the embedded ARM7TDMI processor?

The ARM7TDMI processor runs at a maximum frequency of 66 MHz.

Does the STA2058 support Satellite-Based Augmentation Systems?

Yes, the device supports SBAS, specifically WAAS and EGNOS.

What is the cold start Time to First Fix (TTFF) performance?

The typical cold start TTFF is less than 39 seconds under specified conditions.