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Controller Area Network (CAN) technology was designed to provide reliable, error-free network communication for applications in which safety and real-time operation cannot be compromised. Its main attributes can be summarized as follows:

  • High reliability and noise immunity
  • Fewer connections
  • Flexible architecture
  • Error handling through peripherals
  • Low wiring cost
  • Scalability

Renesas provides several MCU products with integrated CAN controllers, ranging from low-cost 8/16-bit R8C and M16C devices to high-performance 32-bit SuperH and R32C devices. The SuperH and M16C devices offer up to 4 CAN channels.

Renesas CAN MCU Lineup:

CAN MCU Lineup SH7216 RX600 SH7264/62 SH7286 R32C/117 R32C/118 M16C/29 R8C/2x

Renesas CAN solutions offer many unique features to shorten development cycle and reduce software complexity. Some of the key benefits are the following:

  • FullCan (Extended CAN) controller with 16 or 32 flexibly configurable buffers for efficient data management
  • Acceptance filter support unit (ASU) is a hardware-based message prescreening mechanism for increased network rigidity and decreased CPU overhead
  • Manual re-transmission abort function prevents retransmitting a message that is lost in arbitration to avoid bus congestion
  • Forced bus-off restore function for quick state recovery and listen-only mode for node startup and communication analysis

Check out the detailed CAN controller features by product family.

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