MikroElektronika MCP2551 CANSPI Board Instruction Manual
- June 5, 2024
- MikroElektronika
Table of Contents
MikroElektronika MCP2551 CANSPI Board
All Mikroelektronika’s development systems feature a large number of peripheral modules expanding the microcontroller’s range of applications and making the process of program testing easier. In addition to these modules, it is also possible to use numerous additional modules linked to the development system through the I/O port connectors. Some of these additional modules can operate as stand-alone devices without being connected to the microcontroller.
CAN-SPI Additional Board
The CAN protocol is compliant with ISO standards and is primarily used in
serial communication. It was originally intended for applications in
automotive industry, but these days it is commonly used in other industries
where a high noise resistance and high level of reliability at transferring
data is required.
CAN network consists of several nodes cabled together (L and H lines). There
is one CAN controller in each of these nodes used to adjust standard digital
signals to voltages present in the network. The CAN-SPI board features a
transceiver MCP2551 that provides necessary signal adjustments and enables
these signals to be sent/received at a rate of up 1 Mb/s. In addition, this
circuit serves as a protection against high voltages that might appear in the
network (EMI, ESD, noise caused by induction, etc.). The CAN-SPI board also
features the MCP2515 circuit used as a CAN controller that exchanges data with
microcontrollers using a standard Serial Peripheral Interface (SPI).
There are two connectors provided on the board. A 2×5 connector is used for
connection with a development system the board is connected to, whereas a
screw terminal with contacts marked H and L enables connection with the
network. Since the board uses SPI interface for communication with
microcontrollers, it may also be used with microcontrollers which are not
supplied with the built-in CAN module.
DIP switch SW1 is used to select pins on the microcontroller port to be used
for SPI communication (MISO, MOSI and SCK lines).
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