Raspberry Pi RS485 Isolated CAN Expansion HAT Dual RS485 CAN Multi Onboard Protection Circuits

 Note: Do not include Raspberry Pi, Please Buy alone.

        Features

• Based on Raspberry Pi 40PIN GPIO interface design, suitable for Raspberry Pi series motherboards

• 1 CAN, using the controller MCP2515, with CAN transceiver, can realize SPI to CAN

• Equipped with two channels of RS485, using SC16IS752 and SP3485 dual-chip combination scheme, can realize SPI to RS485

• On-board power conversion circuit, support 8~28V wide voltage power supply, can supply power to Raspberry Pi at the same time

• On-board integrated power isolation, which can provide stable isolation voltage, and no additional power supply is required at the isolation end

• On-board integrated digital isolation for signal isolation, high reliability, strong anti-interference, and low power consumption

• On-board TVS (transient voltage suppression tube), which can effectively suppress surge voltage and transient peak voltage in the circuit, lightning protection and anti-static

• On-board resettable fuses and protection diodes ensure stable output of current and voltage, prevent overcurrent and overvoltage, and improve shock resistance

• On-board 120Ω termination resistor, enabled by jumper cap settings

• There are two wiring methods of on-board terminals and pin headers, making wiring more convenient

• Lead out SPI control interface for easy access to other controllers for control

        Specifications

• Expansion interface: 2 RS485 + 1 CAN

• Communication interface: SPI

• CAN Controller: MCP2515

• CAN transceiver: SIT65HVD230DR or SN65HVD23D

• CAN communication rate: within 1Mbps

• Serial port expansion chip: SC16IS752

• RS485 Transceiver: SP3485

• RS485 communication rate: 300~921600 bps

• Power supply mode: external power supply terminal or Raspberry Pi

• External power supply range: DC 8~28V

• Working voltage: 3.3V

• Product size: 65 × 56.5 mm

The main function

 

Connecting With Raspberry Pi

Standard Raspberry Pi 40PIN GPIO Header, Suitable For Raspberry Pi Series Boards

1-way CAN and 2-way RS485

CAN function: using controller MCP2515, with CAN transceiver
RS485 function: adopt SC16IS752 and SP3485 dual-chip combination scheme

Industrial isolation

On-board integrated power isolation, which can provide stable isolation voltage, and no additional power supply is required at the isolation end
On-board integrated digital isolation for signal isolation, high reliability, strong anti-interference, and low power consumption

What's On Board

Chip

1. MCP2515

   CAN controller chip

2. SIT65HVD230DR or SN65HVD23D

   CAN transceiver chip

3. SP3485

   RS485 transceiver chip

4. SC16IS752

   Serial port expansion chip

5. π163M31

   digital isolator chip

6. B0505LS-1W

   Power Isolation Module

Other

1. Power supply interface

   DC 8~28V，Powers Raspberry Pi and expansion boards电

2. RS485 bus interface

   Terminal/pin header access

3. CAN bus interface

   Terminal/pin header access

4. Raspberry Pi GPIO interface
5. SPI control interface

   Easy access to other microcontrollers such as STM32/Arduino

6. CAN terminating resistor

   The default jump selection is 120Ω

7. RS485 Terminating resistor

   The default jump selection is 120Ω

8. Power Indicator

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Interface Definition

Outline Dimensions