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MCP2518FD 数据表(PDF) 4 Page - Microchip Technology |
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MCP2518FD 数据表(HTML) 4 Page - Microchip Technology |
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4 / 96 page  MCP2518FD DS20006027A-page 4 2019 Microchip Technology Inc. 1.3 Typical Application Figure 1-2 shows an example of a typical application of the MCP2518FD device. In this example, the microcontroller operates at 3.3V. The MCP2518FD device interfaces directly with microcontrollers operating at 2.7V to 5.5V. In addition, the MCP2518FD device connects directly to high-speed CAN FD transceivers. There are no external level shifters required when connecting VDD of the MCP2518FD 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 MCP2518FD device signals interrupts to the microcontroller by 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: MCP2518FD INTERFACING WITH A 3.3V MICROCONTROLLER 3.3V LDO 5V LDO VBAT 0.1uF CANH CANL 0.1uF 0.1uF 120 VSS VDD RXCAN TXCAN CLKO nCS SCK INT SDI SDO VDD RA0 VSS OSC1 SCK SDI SDO INT0 VDD TXD RXD STBY VSS VIO CANH CANL 0.1uF INT0 INT1 OSC2 OSC1 22pF 22pF INT1 INT2 |
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