MC34931EK

Overview

The MC34931EK is a System Basis Chip (SBC) designed for automotive applications, integrating a high-speed CAN transceiver with multiple voltage regulators and diagnostic features. It provides power management for microcontrollers and peripherals while ensuring robust communication via the ISO11898-2 compatible CAN interface. The device includes built-in protection mechanisms against over-current, over-temperature, and short-circuit conditions, enhancing system reliability in harsh automotive environments.

Feature Summary

• Integrates high-speed CAN transceiver with local and bus failure diagnostics
• Provides regulated power supplies for MCU and peripheral devices
• Includes advanced SPI-based monitoring and critical pin diagnostics
• Supports multiple wake-up sources for low-power mode operation

Applications

• Automotive engine control units (ECU)
• Body control modules (BCM)
• Gateway nodes in automotive networks
• Industrial control systems requiring CAN connectivity

Procurement Notes

Verify the specific suffix 'EK' denotes the correct package type and temperature grade required for your design. Confirm that the integrated regulator outputs match your MCU's voltage requirements. Ensure the CAN transceiver specifications align with your network baud rate needs. Check for any lead time constraints due to automotive qualification standards.

Selection Notes

Select this SBC when a combined solution for power management and high-speed CAN communication is needed. It is suitable for designs requiring integrated diagnostics and protection to reduce component count. Consider its compatibility with standard automotive microcontrollers and its ability to support various wake-up events for energy-efficient systems.

Part Context

System Basis Chips combine essential analog functions like voltage regulation and communication interfaces into a single package. This approach simplifies PCB layout, reduces bill of materials, and improves system reliability by minimizing interconnect points. NXP's SBC portfolio targets automotive and industrial markets where robustness and integration are critical.

Replacement Considerations

Check for direct pin-to-pin replacements within the MC349xx series or other NXP SBCs with similar regulator configurations and CAN capabilities. Verify that any substitute part meets the same automotive quality standards and functional safety requirements as the original component.