MCP25625 CAN Controller: Datasheet, Block Diagram, Feature

MCP25625 Pinout

The MCP25625 is a complete, cost-effective and small footprint CAN solution that can be easily added to a microcontroller with an available SPI interface.

The MCP25625 interfaces directly with microcontrollers operating at 2.7V to 5.5V; there are no external level shifters required. In addition, the MCP25625 connects directly to the physical CAN bus, supporting all requirements for CAN high-speed transceivers.

The MCP25625 meets the automotive requirements for high-speed (up to 1 Mb/s), low quiescent current, Electromagnetic Compatibility (EMC) and Electrostatic Discharge (ESD).

Symbol

MCP25625 Symbol

Footprint

MCP25625 Footprint

3D Model

MCP25625 3D Model

• Stand-Alone CAN 2.0B Controller with Integrated CAN Transceiver and Serial Peripheral Interface (SPI)

• Up to 1 Mb/s Operation

• Very Low Standby Current (10 µA, typical)

• Up to 10 MHz SPI Clock Speed

• Interfaces Directly with Microcontrollers with 2.7V to 5.5V I/Os

• Available in SSOP-28L and 6x6 QFN-28L

• Temperature Ranges:

- Extended (E): -40°C to +125°C

• Automotive

• Communications & Networking

MCP25625 Block Diagram

The circuit shows an example of a typical application of the MCP25625 below. In this example, the microcontroller operates at 3.3V. VDDA supplies the CAN transceiver and must be connected to 5V. VDD, VIO of the MCP25625 are connected to the VDD of the microcontroller. 

The digital supply can range from 2.7V to 5.5V. Therefore, the I/O of the MCP25625 is connected directly to the microcontroller, no level shifters are required. 

The TXD and RDX pins of the CAN transceiver must be externally connected to the TxCAN and Rx pins of the CAN controller. 

The SPI interface is used to configure and control the CAN controller. 

The INT pin of the MCP25625 signals an interrupts to the microcontroller. Interrupts need to be cleared by the microcontroller through SPI. 

The usage of RxnBF and TxnRTS is optional since the functions of these pins can be accessed through SPI. The RESET pin can optionally be pulled up to the VDD of the MCP25625 using a 10 k resistor. The CLKOUT pin provides the clock to the microcontroller.

MCP25625 Typical Application Circuit

The CAN controller has five modes of operation:

• Configuration mode

• Normal mode

• Sleep mode

• Listen-Only mode

• Loopback mode

MCP25625 Package

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