MCP2518FDT-E-SL Detailed explanation of pin function specifications and circuit principle instructions
The part " MCP2518FDT-E/SL " belongs to the Microchip Technology brand. This specific model is a MCP2518 CAN FD (Controller Area Network Flexible Data Rate) controller with SPI interface , and it's widely used in automotive and industrial applications.
Package and Pin Function Specifications:
The MCP2518FDT-E/SL typically comes in a VQFN-32 package (32 pins). Here's a detailed description of the pin functions and an example of how they are generally configured:
Pin Function List for MCP2518FDT-E/SL (VQFN-32):
Pin No. Pin Name Function Description 1 VDD Power supply pin for the IC. Connect to 3.3V or 5V depending on your application. 2 VSS Ground connection. Connect to system ground. 3 TXD Transmit Data pin for SPI communication. 4 RXD Receive Data pin for SPI communication. 5 SCK SPI Clock input. Used to synchronize communication. 6 MISO Master In Slave Out pin for SPI communication. 7 MOSI Master Out Slave In pin for SPI communication. 8 CS Chip Select for SPI communication. 9 INT Interrupt pin, used for signaling events to the microcontroller. 10 RESET External reset pin to reset the MCP2518. 11 SOF Start of Frame pin (for CAN bus). 12 VDDIO Power for logic inputs and outputs (typically 3.3V or 5V). 13 CANH CAN Bus High pin. Connect to the CAN bus network. 14 CANL CAN Bus Low pin. Connect to the CAN bus network. 15 VSS Ground pin (same as Pin 2). 16 VDD Power supply pin (same as Pin 1). 17 RDY Ready output pin, signals the availability of the CAN controller. 18 WAKE Wake-up input pin for CAN. 19 OE Output Enable pin, controls whether output drivers are active. 20 CLKIN Clock input pin. 21 VREF Voltage Reference pin, used for internal voltage reference. 22 PGD Power-down pin, used to disable the device. 23 VSS Ground (same as Pin 15). 24 GND Ground (additional pin for redundancy). 25 PGOOD Power Good output pin. 26 CANRX CAN Receive pin. 27 CANTX CAN Transmit pin. 28 GND Additional ground pin for stability. 29 VCC Power supply for CAN interface. 30 RESET External reset (same as Pin 10). 31 RST Reset for external devices. 32 VCC Power input for core.Frequently Asked Questions (FAQs) about MCP2518FDT-E/SL:
1. What is the MCP2518FDT-E/SL? The MCP2518FDT-E/SL is a CAN FD controller from Microchip that interfaces with a microcontroller via SPI to support communication on the CAN bus. 2. What is the maximum operating voltage for the MCP2518FDT-E/SL? The MCP2518FDT-E/SL operates between 3.0V and 5.5V. 3. How many pins does the MCP2518FDT-E/SL have? The MCP2518FDT-E/SL has 32 pins in total in the VQFN package. 4. What is the function of the TXD pin? The TXD pin is used to transmit data from the microcontroller to the MCP2518. 5. What is the function of the RXD pin? The RXD pin is used to receive data from the MCP2518 to the microcontroller. 6. What is the purpose of the CS pin? The CS (Chip Select) pin is used to select the MCP2518 for SPI communication. It enables communication between the microcontroller and MCP2518. 7. How do I reset the MCP2518FDT-E/SL? To reset the MCP2518, you can use the RESET pin (Pin 10). A low signal on this pin resets the device. 8. What are the CANH and CANL pins for? The CANH (Pin 13) and CANL (Pin 14) are the CAN bus high and low pins, respectively, used to connect the MCP2518 to the CAN network. 9. Can I use the MCP2518FDT-E/SL at 5V logic? Yes, the MCP2518FDT-E/SL can be operated with a 5V logic interface, though it also supports 3.3V logic. 10. What is the WAKE pin used for? The WAKE pin is used to wake the MCP2518 from low-power modes when a CAN bus activity is detected. 11. How does the Interrupt function work? The INT pin outputs an interrupt signal to notify the microcontroller of events or errors in the CAN bus communication. 12. What is the RDY pin's purpose? The RDY pin indicates whether the MCP2518 is ready to send or receive data over the CAN bus. 13. Can the MCP2518FDT-E/SL be used in automotive applications? Yes, the MCP2518FDT-E/SL is designed for automotive and industrial applications, supporting CAN and CAN FD protocols. 14. What is the significance of the CLKIN pin? The CLKIN pin is used to provide an external clock source to the MCP2518. 15. Is there a need for an external crystal oscillator? No, the MCP2518FDT-E/SL has an internal oscillator, but you can also provide an external clock via the CLKIN pin. 16. What are the logic levels for the SPI interface? The SPI interface on the MCP2518FDT-E/SL supports standard logic levels: 3.3V or 5V depending on the system configuration. 17. What happens if I connect the VDD and VSS pins incorrectly? Connecting the VDD and VSS pins incorrectly will cause malfunction or permanent damage to the MCP2518FDT-E/SL. 18. How is the power-down functionality triggered? The power-down functionality can be triggered via the PGD pin, which shuts down the device to conserve power. 19. What is the maximum speed of the SPI interface? The maximum SPI clock speed can be up to 10 MHz for reliable communication with the MCP2518. 20. Can the MCP2518FDT-E/SL support both CAN 2.0 and CAN FD? Yes, the MCP2518FDT-E/SL supports both the older CAN 2.0 protocol as well as the newer CAN FD protocol.This detailed explanation and pin function list should help you understand the MCP2518FDT-E/SL in depth. Let me know if you need more specific details or clarifications!
