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Section 20 Controller Area Network
Page 982 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
3. Implementation Guide for the CAN Protocol, CAN Specification 2.0 Addendum, CAN In
Automation, Erlangen, Germany, 1997
4. Road vehicles - Controller area network (CAN): Part 1: Data link layer and physical signalling
(ISO-11898-1, 2003)
5. Road vehicles - Controller area network (CAN): Part 4: Time triggered communication (ISO-
11898-4, 2004)
20.1.5 Features
Supports CAN specification 2.0B
Bit timing compliant with ISO-11898-1
32 Mailbox version
Clock frequency: Up to 36 MHz
31 programmable Mailboxes for transmit / receive + 1 receive-only mailbox
Sleep mode for low power consumption and automatic recovery from sleep mode by detecting
CAN bus activity
Programmable receive filter mask (standard and extended identifier) supported by all
Mailboxes
Programmable CAN data rate up to 1MBit/s
Transmit message queuing with internal priority sorting mechanism against the problem of
priority inversion for real-time applications
Data buffer access without SW handshake requirement in reception
Flexible micro-controller interface
Flexible interrupt structure
16-bit free running timer with flexible clock sources and pre-scaler, 3 Timer Compare Match
Registers
6-bit Basic Cycle Counter for Time Trigger Transmission
Timer Compare Match Registers with interrupt generation
Timer counter clear / set capability
Registers for Time-Trigger: Local_Time, Cycle_time, Ref_Mark, Tx_Enable Window,
Ref_Trigger_Offset
Flexible TimeStamp at SOF for both transmission and reception supported
Time-Trigger Transmission, Periodic Transmission supported (on top of Event Trigger
Transmission)
Basic Cycle value can be embedded into a CAN frame and transmitted