MCP251XFD CAN FD MOTHERBOARD
USER’S GUIDE
2017 Microchip Technology Inc.
DS50002556A-page 15
Chapter 2. Hardware
2.1
HARDWARE FEATURES
2.1.1
Microcontroller
The MCP251XFD CAN FD Motherboard accommodates a PIC32MX470F512H
microcontroller with a 120 MHz/150 DMIPS MIPS32
®
M4K
®
core. The microcontroller
controls the MCP2517FD via the SPI interface. The interrupt pins of the MCP2517FD
are connected to the microcontroller input pins. The microcontroller can control the
standby pin of the CAN FD transceiver on the MCP2517FD click Board using the STBY
output.
2.1.2
Clock Generator
The MCP251XFD CAN FD Motherboard uses the DSC1121, which is a Microchip
MEMS clock generator, as the default clock source into the microcontroller. The
DSC1121 on this board has been programmed to generate an output frequency of
8 MHz and is offered in a small 2.5 x 2.0 mm package.
2.1.3
Switches
Five push button switches provide the following functions:
• S1: Active-low switch
• S2: Active-low switch
• S3: Active-low switch
• S4: Active-low switch
• RST (S5): Active-low MCLR switch to hard reset the microcontroller
When Idle, the switches are pulled high; when pressed, they are grounded.
2.1.4
LEDs
Eight LEDs (D1 through D8) are available. Set the corresponding microcontroller
output pins high to light the LEDs.
2.1.5
PICkit™ 3 In-Circuit Debugger connector
Connector J11 provides the footprint for a 6-pin PICkit™ 3 interface.
2.1.6
MikroBUS interface
Figure 2-1
shows the signal assignment to the mikroBUS connector. The MCP251XFD
CAN FD Motherboard is targeted to be used with the MCP2517FD click Board, but it
could also be used with a variety of other click boards.
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