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MCP2517FD 数据表(PDF) 4 Page - Microchip Technology |
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MCP2517FD 数据表(HTML) 4 Page - Microchip Technology |
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4 / 98 page  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 SI SO VDD RA0 VSS OSC1 SCK SDI SDO INT0 INT0 INT1 OSC2 OSC1 INT1 INT2 0.1 μF 0.1 μF 0.1 μF 22 pF 22 pF VDD TXD RXD STBY VSS VIO CANH CANL |
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