▶ Customer Introduction

A leading domestic automotive electronic control unit (ECU) and smart cockpit system supplier, focusing on in-vehicle infotainment, Advanced Driver Assistance Systems (ADAS) and domain controllers.

▶ Module Specifications

Core chip: KLM8G1GEUF eMMC memory chip
Key Parameters	Capacity 8GB, operating temperature range -40℃ to 120℃, supports high-speed interface
Application Platform	Texas Instruments (TI) TDA4x series high-performance processor platform, used for autonomous driving domain controllers

▶ Core Challenges

In the mass production of intelligent automotive domain controllers, programming the core memory chip faces severe challenges:

▶ Complex process

 • The programming process involves multiple stages (such as HSM encryption, key injection, firmware programming). Manual operations are error-prone and inefficient

▶ Extremely high reliability requirements

 • The in-vehicle environment requires chips to work stably at extreme temperatures (-40℃ to 120℃). Programming quality directly affects driving safety

▶ Rigid requirements for data security and traceability

 • Processes such as firmware encryption and unique key injection must be 100% accurate, and the programming data of each chip (serial number, key, check code) must be fully traceable

▶ Difficulty in multi-project adaptation

 • Controllers of different models and functions require different firmware and configurations to be programmed. Quick switching and compatibility are major challenges

▶ Customized Solution

Prosystems Electronics provided a fully automatic in-line programming and testing system based on the TDA4 JTAG solution for this project.

▶ Full-process automation

 • Integrates the complete flow of "hardware connection → software configuration → trial burn verification → batch programming → 100% verification", completed with one key, eliminating human errors

▶ Military-grade stability assurance

 • The hardware architecture adopts high-integration design to ensure signal integrity

 • The software control module achieves precise control of programming speed, voltage and timing

 • The system passed -40℃ to 120℃ temperature cycle tests, with programming duration stability over 4 minutes, ensuring automotive-grade reliability

▶ Security and data traceability system

 • Integrates dynamic data programming and Secure Debug Lock functions, achieving secure firmware encryption and unique key injection

 • Each operation generates an encrypted log containing time, device and operator, seamlessly connecting with the customer's MES system to achieve full-lifecycle data traceability from chip to vehicle

▶ High compatibility and quick switching

 • The solution core supports multiple TI processors such as TDA4VL

 • Through software project configuration, it can quickly adapt to different firmware versions (such as app_FULL.hex, disable_HSM.hex) and encryption requirements, shortening line changeover time to minutes

▶ Project Results

 • Efficiency leap: fully automatic assembly line operation, single-chip programming time optimized and stable, overall production efficiency increased by 300%, perfectly matching the customer's JIT (Just-In-Time) production needs

 • Excellent quality: programming data accuracy up to 99.9%, defect rate lower than industry average. After the customer's rigorous testing, all controllers passed high-low temperature cycles and vibration tests in one go

 • 100% compliance in security and traceability: successfully achieved encrypted programming of tens of millions of chips with zero key injection errors. The complete data traceability system helped the customer quickly locate and resolve potential supply chain issues multiple times

 • Empowering customer market success: stable, efficient and reliable programming capacity strongly guaranteed the on-schedule mass production and delivery of the customer's smart domain controller for a flagship model, helping the product line gain high market recognition

▶ Application Scenarios

The capabilities reflected in this solution have been successfully extended to:

 • Automotive electronics: Engine Control Unit (ECU), vehicle gateway, BMS battery management system

 • Industrial control: industrial PLC, smart sensors, robot controllers

With deeply customized automated programming and testing solutions, Prosystems Electronics overcame the reliability, security and efficiency challenges of automotive-grade chip programming, becoming a trusted partner for customers on their intelligent upgrade path.