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CHAPTER 16 CAN controller
16.1
Overview of CAN Controller
The CAN (controller area network) is a serial communication protocol conformed to
CAN Ver.2.0A and Ver.2.0B.Transmitting and receiving can be performed in the standard
frame format and the extended frame format.
I Features of CAN controller
• The CAN controller format conforms to CAN Ver.2.0A and Ver.2.0B.
• Transmitting and receiving can be performed in the standard frame format and the extended frame
format.
• Data frames can be transmitted automatically by remote frames receiving.
• The baud rate ranges from 10 KBps to 1 Mbps (at 16-MHz machine clock frequency).
• The CAN controller equips eight transmit/receive message buffers.
• The standard frame format provides transmitting and receiving with 11-bit ID and the extended frame
format 29-bit ID.
• Message data can be set from 0 byte to 8 bytes.
• Message buffer configuration can be performed at a multilevel.
• The CAN controller contains two acceptance mask registers, each of which can set a mask
independently for a receive message ID.
• The two acceptance mask registers allow reception in the standard frame and extended frame formats.
• Four masks can be set at all bit comparison and masking, and partially at acceptance mask registers 0
and 1.
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