Isolated RS485 CAN HAT (B) for Raspberry Pi

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

Bulit-in power supply isolation, magnetical isolation, and TVS diode, etc.

Features

• 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 8~28V wide voltage power supply, 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 and jamproof, low power consumption

• Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic

• Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock proof performance

• Onboard 120Ω terminal resistor, configured by jumper

• Onboard terminals and pin headers, more convenient connection

• Breakout SPI control pins, for connecting with host control boards

Specifications

Expanded interface 2-Ch RS485 + 1-Ch CAN

COMMUNICATION INTERFACE SPI

CAN Controller MCP2515

CAN transceiver SIT65HVD230DR/SN65HVD23D

CAN Baud Rate ≦1Mbps

UART Expansion Chip SC16IS752

RS485 transceiver SP3485

RS485 Baud Rate 300~921600 bps

Power Supply External power supply terminal OR Raspberry Pi

External power supply Range DC 8~28V

Operating Voltage 3.3V

Dimensions 65 × 56.5 mm

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 and jamproof, 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

7. Power supply interface
   DC 8~28V, can power the HAT and Raspberry Pi

8. RS485 bus interface
   Connect via screw terminals/pin header

9. CAN bus interface
   Connect via screw terminals/pin header

10. Raspberry Pi GPIO header

11. SPI control header
    for connecting with host boards like STM32/Arduino

12. CAN terminal resistor jumper
    Switch to 120Ω by default

13. RS485 Terminal resistor jumper
    Switch to 120Ω by default

14. Power Indicator

Pin Definition

Outline dimensions