What System Protection Features Are Supported?

* Question

What System Protection Features Are Supported?

* Answer

The system integrates multiple protection mechanisms to enhance reliability, fault tolerance, and data security during operation. These system protection features are designed to detect abnormal conditions and automatically recover or protect critical resources.

1. Watchdog (COP) Reset Protection

A watchdog (Computer Operating Properly, COP) reset mechanism is provided to monitor the normal operation of the microcontroller.

• Supports a dedicated backup 1 kHz internal clock sourceor bus clock operation
• Automatically resets the system if software execution becomes abnormal

This feature helps prevent system lockup caused by software faults or unexpected runtime conditions.

2. Low-Voltage Detection and Reset

The system includes a low-voltage detection circuit with both reset and interrupt capabilities.

• Detects supply voltage drops below a defined threshold
• Supports selectable voltage threshold levels

This ensures reliable operation and prevents data corruption during power instability.

3. Illegal Instruction Code Reset

The system supports automatic reset in response to illegal instruction execution.

• Detects invalid or undefined instruction codes
• Triggers a system reset to restore normal operation

This protects the system from unpredictable behavior caused by software errors or memory corruption.

4. Illegal Address Access Reset

Protection is provided against illegal operation address access.

• Monitors invalid memory or peripheral access
• Initiates a system reset when an illegal address is detected

This mechanism improves system robustness and prevents unintended hardware behavior.

5. Flash Memory Block Protection

The system supports Flash block protection to safeguard critical program and data regions.

• Prevents unauthorized or accidental modification of protected Flash blocks
• Enhances code integrity and system security

This feature is especially important for firmware stability and intellectual property protection.

Summary

The system protection features include watchdog reset, low-voltage detection with reset and interrupt, illegal instruction and address access resets, and Flash block protection. Together, these mechanisms improve system reliability, protect critical resources, and ensure stable operation under abnormal conditions.