MCP2517FD datasheet(4/98 Pages) MICROCHIP

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MCP2517FD

DS20005688B-page 4

 2017-2018 Microchip Technology Inc.

1.3

Typical Application

Figure 1-2 shows an example of a typical application of

the MCP2517FD. In this example, the microcontroller

operates at 3.3V.

The MCP2517FD interfaces directly with microcontrol-

lers operating at 2.7V to 5.5V. In addition, the

MCP2517FD connects directly to high-speed CAN FD

transceivers. There are no external level shifters

required when connecting VDD of the MCP2517FD and

the microcontroller to VIO of the transceiver.

The VDD of the CAN FD transceiver is connected to 5V.

The SPI interface is used to configure and control the

CAN FD controller.

The MCP2517FD signals interrupts to the microcontrol-

ler using INT, INT0 and INT1. Interrupts need to be

cleared by the microcontroller through SPI.

The CLKO pin provides the clock to the microcontroller.

FIGURE 1-2:

MCP2517FD INTERFACING WITH A 3.3V MICROCONTROLLER

3.3V LDO

5V LDO

VBAT

CANH

CANL

0.1 μF

120

VSS

VDD

RXCAN

TXCAN

CLKO

nCS

SCK

INT

VDD

RA0

VSS

OSC1

SCK

SDI

SDO

INT0

INT1

OSC2

OSC1

INT1

INT2

0.1 μF

22 pF

VDD

TXD

RXD

STBY

VSS

VIO

CANH

CANL

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