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This is a dual-channel isolated RS485 extension board specially designed for raspberry PI, which adopts SC16IS752+SP3485 solution embeds with protection circuits such as power supply isolation, ADI magnetical isolation, and TVS diode, etc.
This product adopts SC16IS752 as a controller. SC16IS752 is a dual-channel high-performance UART expansion chip that supports SPI and I2C interface communication. This module uses an SPI interface.
- SC16IS752 UART expansion chip
- ADUM1412 digital isolator
- PC817 optocoupler
- SP3485 RS485 transceiver
- B0505LS power supply isolation module
- RT9193-33 power chip
- SMAJ12CA transient suppress diode array
- Auto-recovery fuse
- Status indicator : PWR: power indicator
RXD/TXD: UART transceiving indicator - Raspberry Pi GPIO connector: for connecting Raspberry Pi
- RS485 terminal
- MCU control header: for connecting host control boards like Arduino
- 120Ω terminal resistor switch
- Interrupt pin switch
- Operating mode selectionHalf-auto: A=0, B=1 Full-auto: A=1, B=0
It is easy to control the 2-channel RS485 for auto-transceiving via the SPI interface. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for fields like industrial automation.
Package Includes:
- 1 x 2-CH RS485 HAT
- 1 x 2x20PIN female pin header
- 1 x RPi screws pack (2pcs)
