CJMCU-2551 MCP2551 CAN Protocol Controller High-speed Interface Module

The CJMCU-2551 MCP2551 CAN Protocol Controller High-speed Interface Module is a high speed CAN, with fault-tolerant capabilities. It acts as an interfacing device between CAN protocol and the physical bus. The device, MCP2551 provides differential transmit and receive capabilities and is compliant with the ISO-11898, including the 24V requirements. Data transfer rate of up to 1Mb/s is achievable with this module.

The module also provides a buffer between the CAN controller and the high-voltage spikes that can be generated on the CAN bus by outside sources like EMI, ESD, electrical transients, etc.

Pin Description:

Pin
Number
Pin Name
Pin Function

1
TXD
Transfer Data Input

2
VSS
Ground

3
VDD
Supply Voltage

4
RXD
Receive Data Output

5
VREF
Reference Output Voltage

6
CANL
CAN Low-Level Voltage I/O

7
CANH
CAN High-Level Voltage I/O

8
RS
Slope-control Input

Features:

1.  Supports 1 Mb/s operation
2. Implements ISO-11898 standard physical layer requirements
3. Suitable for 12V and 24V systems
4. The externally-controlled slope for reduced RFI emissions
5.  Detection of ground fault (permanent Dominant) on TXD input
6. Power-on Reset and voltage brown-out protection
7. An unpowered node or brown-out event will not disturb the CAN bus
8. Low current standby operation
9. Protection against damage due to short-circuit conditions (positive or negative battery voltage)
10. Protection against high-voltage transients
11. Automatic thermal shutdown protection
12. Up to 112 nodes can be connected
13. High-noise immunity due to differential bus implementation
14. Temperature ranges:
    – Industrial (I): -40°C to +85°C
    – Extended (E): -40°C to +125°C

Package Includes:

1 x CJMCU-2551 MCP2551 CAN Protocol Controller High-speed Interface Module