• Dual Isolated SJA1000 Based CAN channels
• CAN 2.0 compatible, up to 1MBps data rate; channels independently configurable in software
• ISO-11892 compatible CAN headers with +5V supply
• CANOpen and Devicenet compatible architecture
• I/O mapped host interface, each channel uses 3 addresses
• Versatile programmable digital I/O TTL/CMOS signal levels
• Software configurable direction (groups of 4-bits)
• External I2C-bus for system expansion and interconnection
• Full SMD design with no configuration jumpers
• FlexiSet software configurable non-volatile BASE address and IRQ
• RoHS compliant version available

Application Areas:

• Industrial machine control
• Vehicle monitoring and diagnostics
• CAN repeaters and bridges
• Redundant CAN-interfaces
• Distributed sensor interfacing
• Versatile digital I/O control

Drawings, diagrams and documentation:

• Module block diagram
• Module connector locations
• COM-1273 User's Manual download
• SJA1000 CAN controller documentation download

The COM-1273 dual galvanically isolated CAN-bus controller board is designed to operate in difficult electrical environments encountered in vehicles and industry. Two independent Philips SJA1000 CAN controllers are decoded into the address space of the host PC. The board supports the Eurotech FlexiSet jumperless software programmable board configuration for the BASE-address, host IRQ and bit-programmable digital I/O control. A non volatile EEPROM is used to store the board parameters. This advanced scheme allows for board reconfiguration in the PC104 stack and increases reliability in high vibration environments. EMI-filtering of the CAN-interfaces and bus protection ensure compliance with the CAN-specification as well as EU low voltage directives required for CE compliance.

Integrated on the board is a full I2C-bus for system expansion and remote diagnostics. This bus is controlled by the onboard I2C-bus controller in the FPGA. Up to 16 bit programmable TTL/CMOS digital I/O can be used to interface to various devices. User functions and additional interrupt inputs are supported as a custom features. The onboard FPGA makes the COM-1273 different from many basic CAN boards in the market. This technology allows for complex control I/O functions to be programmed into the digital I/O-port such as incremental encoder decoders, PWM control ports, timer/counter etc. These application specific functions are available upon request on a project basis.

Other network and communication related products:

• COM-1274 8 serial port and 82527 CAN bus interface module
• COM-1240 Intelligent MVB bus interface module
• COM-1230 ISDN telecommunications module
• COM-1267 5-port 10/100Mbit Ethernet switch
• COM-1461 IEEE-1394b Firewire interface module
• COM-1440 4-port USB 2.0 interface module
• COM-1250 MIL-STD-1553 bus controller

General Board Features:

• Two SJA1000 CAN controllers
• 16MHz CAN controller clock
• Isolated CAN interfaces
• Programmable datarates, up to 1Mbps
• Jumper-selectable 120 Ohm terminations
• +5V tolerant I2C-bus
• 16 bit-programmable direction digital I/O
• 10 kOhm programmable pull-up/pull-down in 4-bit groups
• I/O-mapped board resources - 3 bytes for each CAN controller
• Operating voltage: +5V only, +-5%
• Power consumption: 1,8W typical
• Compatible with DOS, Linux, QNX, VxWorks, WINCE, WIN2000/XP

Physical Characteristics:

• Dimensions: 90 X 96 mm (3.6"X3.8"), height 15 mm (0.6")
• PC/104 expansion: 104-pin AT-ISA connector
• CAN bus: 10-pin header connectors
• I2C bus: 4-pin header connector
• Digital I/O: 20-pin header connector
• Humidity: 0 ~ 90 %, non condensing

Order Code:

• [COM-1273-A0] COM-1273 PC/104 Dual CAN-bus interface, ETR -40/+85°C

Options:

• Conformal coating
• Custom connectors
• Custom configuration of I/O-map for driver compatibility
• Project specific configuration of digital I/O-port