HD64F2638F20J Datasheet, PDF (661/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Section 16 Controller Area Network (HCAN)
Section 16 Controller Area Network (HCAN)
Notes: The H8S/2635 Group is not equipped with a DTC.
Only a single HCAN channel, HCAN0, is implemented in the H8S/2635 Group.
16.1 Overview
The HCAN is a module for controlling a controller area network (CAN) for realtime
communication in vehicular and industrial equipment systems, etc. The chip has a 2-channel on-
chip HCAN module.
Reference: Bosch CAN Specification Version 2.0, 1991, Robert Bosch GmbH
16.1.1 Features
• CAN version: Bosch 2.0B active compatible
⎯ Communication systems:
NRZ (Non-Return to Zero) system (with bit-stuffing function)
Broadcast communication system
⎯ Transmission path: Bidirectional 2-wire serial communication
⎯ Communication speed: Max. 1 Mbps
⎯ Data length: 0 to 8 bytes
• Number of channel: 2 (HCAN0, HCAN1)
• Data buffers: 16 per channel (one receive-only buffer and 15 buffers settable for
transmission/reception)
• Data transmission: Choice of two methods:
⎯ Mailbox (buffer) number order (low-to-high)
⎯ Message priority (identifier) high-to-low order
• Data reception: Two methods:
⎯ Message identifier match (transmit/receive-setting buffers)
⎯ Reception with message identifier masked (receive-only)
• CPU interrupts: Two interrupt vectors for 12 interrupt causes per channel:
⎯ Error interrupt
⎯ Reset processing interrupt
⎯ Message reception interrupt (mailbox 1 to 15)
⎯ Message reception interrupt (mailbox 0)
⎯ Message transmission interrupt
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 611 of 1458