Скачать или смотреть Spotpear Raspberry Pi Isolated CAN Expansion HAT Dual RS485 CAN Multi Onboard Protection Circuits

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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