2-Channel Isolated RS232 Expansion HAT for Raspberry Pi

Sku: TT-WSB-17498

Sold By: tenettech
  • Shipping in 10-12 Working days

Description of product


This is a 2-channel isolated RS232 expansion HAT designed for Raspberry Pi, adopts the SC16IS752+SP3232 solution, with embedded protection circuits such as power supply isolation, ADI magnetical isolation, and TVS diode, etc.

It is easy to control the 2-channel RS232 via SPI interface. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for fields like industrial automation.


  • Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
  • Adopts SC16IS752+SP3232 dual chip combination, converts SPI to RS232, data rate up to 921600bps
  • Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic
  • Onboard LEDs for indicating the power and transceiver status
  • Breakout SPI control pins, for connecting with host control boards like Arduino
  • Comes with development resources and manual (examples in C and Python)


  • UART expansion chip: SC16IS752
  • RS232 transceiver: SP3232
  • Communication interface: SPI
  • Data rate: 300 ~ 921600 bps
  • Operating voltage: 3.3V / 5V
  • Dimensions: 65mm × 56.5mm
  • Mounting hole size: 3.0mm

What's on Board

2-CH RS232 HAT on board resource

  1. SC16IS752 UART expansion chip
  2. SP3232 RS232 transceiver
  3. ADUM1412 digital isolator
  4. B0505LS power supply isolation module
  5. RT9193-33 power chip
  6. Raspberry Pi GPIO connector: for connecting Raspberry Pi
  7. MCU control header: for connecting host control boards like Arduino
  8. RS232 connector: 2 channels RS232 interface (RS232 9PIN male)
  9. Transient suppress diode array
  10. ESD protection two-way diode
  11. Serial port status indicator
    RXD1/TXD1: channel 1 transceiving indicator
    RXD2/TXD2: channel 2 transceiving indicator
  12. Power indicator
  13. Interrupt pin switch
    The interrupt pin IRQ is connected to P5 (BCM P24) by default
    Changeable via 0R resistor