h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 459

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

The HCAN is a module for controlling a controller area network (CAN) for realtime
communication in vehicular and industrial equipment systems, etc. For details on CAN
specification, see Bosch CAN Specification Version 2.0 1991, Robert Bosch GmbH.
The block diagram of the HCAN is shown in figure 14.1.
14.1
• CAN version: Bosch 2.0B active compatible
• Number of channels: 2
• Data buffers: 16 for each channel (one receive-only buffer and 15 buffers settable for
• Data transmission: Two methods
• Data reception: Two methods
• CPU interrupts: 12 for each channel
• HCAN operating modes
IFCAN10C_000020040800
 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
transmission/reception)
 Mailbox (buffer) number order (low-to-high)
 Message priority (identifier) reverse-order (high-to-low)
 Message identifier match (transmit/receive-setting buffers)
 Reception with message identifier masked (receive-only)
 Error interrupt
 Reset processing interrupt
 Message reception interrupt
 Message transmission interrupt
Features
Section 14 Controller Area Network (HCAN)
Section 14 Controller Area Network (HCAN)
Rev. 2.00 Dec. 05, 2005 Page 421 of 724
REJ09B0200-0200