Waveshare RS485 CAN HAT (B)

Isolated RS485 CAN HAT (B) For Raspberry Pi, 2-Ch RS485 And 1-Ch CAN, Multi Protections
Isolated RS485 CAN HAT (B) For Raspberry Pi

2-Ch RS485 and 1-Ch CAN, SPI communication

Bulit-In Power Supply Isolation, ADI Magnetical Isolation, And TVS Diode, Etc.

Features At A Glance

• Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi-series boards
• 1-Ch CAN, adopts MCP2515 controller and CAN transceiver, converts SPI to CAN
• 2-Ch RS485 adopts SC16IS752+SP3485 dual-chip combination, converts SPI to RS485
• Onboard power conversion circuit, supports an 8~28V wide voltage power supply and can power the Raspberry Pi at the same time
• Onboard unibody power supply isolation, providing stable isolated voltage, no extra power supply required for the isolated terminal
• Onboard unibody digital isolation, for isolating the signal, reliable jam-proof, low power consumption
• Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic
• Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provide over-current/over-voltage proof, improve shock resistance
• Onboard 120Ω terminal resistor, configured by jumper
• Onboard terminals and pin headers, a more convenient connection
• Breakout SPI control pins, for connecting with host control boards

Specifications

What Can It Do?

Enable Isolated And Stable RS485 And CAN Capability For Your Raspberry Pi

Connect To Raspberry Pi Series

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

Expand 1-Ch CAN And 2-Ch RS485

CAN: Adopts Controller MCP2515 With CAN Transceiver
RS485: Adopts SC16IS752 And SP3485 Dual-Chip Combination

Industrial Grade Isolation Protection

• Onboard unibody power supply isolation, providing stable isolated voltage, no extra power supply required for the isolated terminal
• Onboard unibody digital isolation, for isolating the signal, reliable jam-proof, low power consumption

What's On Board

Chip Features

1. MCP2515
   CAN controller
2. SIT65HVD230DR/SN65HVD23D
   CAN transceiver
3. SP3485
   RS485 transceiver
4. SC16IS752
   UART expansion
5. π163M31
   digital isolator
6. B0505LS-1W
   Power supply isolation

Others

1. Power supply interface
   DC 8~28V can power the HAT and Raspberry Pi
2. RS485 bus interface
   Connect via screw terminals/pin header
3. CAN bus interface
   Connect via screw terminals/pin header
4. Raspberry Pi GPIO header
5. SPI control header
   for connecting with host boards like STM32/Arduino
6. CAN terminal resistor jumper
   Switch to 120Ω by default
7. RS485 Terminal resistor jumper
   Switch to 120Ω by default
8. Power Indicator

Pin Definition

Outline Dimensions

Resources & Services
WIKI: www.waveshare.com/wiki/RS485_CAN_HAT_(B)