STA1085EOA3

The STA1085EOA3 is a dual-core ARM® Cortex®-R4 microprocessor IC designed for embedded telematics and automotive applications. It integrates a 2-core, 32-bit ARM® Cortex®-R4 main processor with an ARM® Cortex®-M3 coprocessor, delivering a balance of real-time processing and auxiliary control capabilities for infotainment and telematics systems.

With a 450 MHz core frequency, industry-standard interfaces and an AEC-Q100 automotive qualification, the STA1085EOA3 targets applications that require deterministic performance, broad peripheral integration and operating range suitable for automotive environments.

Key Features

• Core Architecture  Dual 32-bit ARM® Cortex®-R4 cores operating at 450 MHz provide deterministic processing for real-time telematics and control functions; includes an ARM® Cortex®-M3 coprocessor for auxiliary tasks.
• Memory & Display Controllers  Integrated SDRAM controller and LCD display interface controller support system memory and basic display requirements for embedded HMI and telematics displays.
• High-Speed Connectivity  Two USB 2.0 ports provide standard host/device connectivity for peripherals and data exchange.
• Automotive Interfaces  CANbus support enables vehicle network integration for telematics, diagnostics and vehicle data exchange.
• System Debug & Security  JTAG support for debugging and system development, facilitating bring-up and validation.
• Power & Package  3.3 V I/O voltage and a 361-LFBGA (16×16) surface-mount package for compact board designs.
• Qualification & Temperature Range  AEC-Q100 qualification and an operating temperature range of −40 °C to 85 °C for automotive-grade reliability.

Typical Applications

• Telematics Units  Real-time processing and CANbus connectivity make the STA1085EOA3 suitable for vehicle telematics control and data management.
• In-Vehicle Infotainment  Integrated SDRAM and LCD interface support user interface control and basic display functions in infotainment systems.
• Fleet Management Systems  Dual-core processing and USB connectivity enable robust data logging, communication and peripheral integration for fleet devices.

Unique Advantages

• Dual-Core Deterministic Processing: Two ARM® Cortex®-R4 cores at 450 MHz deliver real-time compute capability for latency-sensitive telematics functions.
• Auxiliary Coprocessing: An ARM® Cortex®-M3 coprocessor allows segregation of control tasks, reducing main-core load and simplifying task partitioning.
• Automotive-Grade Qualification: AEC-Q100 qualification and −40 °C to 85 °C operating range support deployment in automotive environments.
• Broad Peripheral Integration: On-chip SDRAM controller, LCD controller, USB 2.0 ports and CANbus reduce external components and simplify system design.
• Compact Surface-Mount Package: 361-LFBGA (16×16) package enables space-efficient PCB layouts for embedded modules.
• Standard I/O Voltage: 3.3 V I/O compatibility aligns with common automotive and embedded peripheral voltage domains.

Why Choose STA1085EOA3?

The STA1085EOA3 positions itself as a purpose-built microprocessor for telematics and embedded automotive uses, combining dual ARM® Cortex®-R4 cores, an ARM® Cortex®-M3 coprocessor and a suite of interfaces to address real-time processing, peripheral connectivity and display needs. Its AEC-Q100 qualification and extended temperature range make it suitable for demanding vehicle environments.

Choose STA1085EOA3 when your design requires deterministic processing, integrated SDRAM and display support, USB and CANbus connectivity, and an automotive-qualified package from STMicroelectronics for long-term deployment and reliability.

Request a quote or contact sales to discuss pricing, lead times and sample availability for the STA1085EOA3.