6.10.12 MCAN

The Controller Area Network (CAN) is a serial communications protocol which efficiently supports distributed real-time control with a high level of security. CAN has high immunity to electrical interference and the ability to self-diagnose and repair data errors. In a CAN network, many short messages are broadcast to the entire network, which provides for data consistency in every node of the system.

The MCAN module supports both classic CAN and CAN FD (CAN with Flexible Data-Rate) specifications. CAN FD feature allows high throughput and increased payload per data frame. The classic CAN and CAN FD devices can coexist on the same network without any conflict.

The MCAN module implements the following features:

• Conforms with ISO 11898-1:2015
• Full CAN FD support (up to 64 data bytes)
• AUTOSAR and SAE J1939 support
• Up to 32 dedicated Transmit Buffers
• Configurable Transmit FIFO, up to 32 elements
• Configurable Transmit Queue, up to 32 elements
• Configurable Transmit Event FIFO, up to 32 elements
• Up to 64 dedicated Receive Buffers
• Two configurable Receive FIFOs, up to 64 elements each
• Up to 128 filter elements
• Internal Loopback mode for self-test
• Maskable interrupts, two interrupt lines
• Two clock domains (CAN clock/Host clock)
• Parity/ECC support - Message RAM single error correction and double error detection (SECDED) mechanism
• Local power-down and wakeup support
• Timestamp Counter

For more information, see section MCAN in chapter Serial Communication Interfaces of the device TRM.