2-Channel Isolated RS232 Expansion HAT for Raspberry Pi 4B/3B+/3B/Zero SC16IS752+SP3232 Solution with Onboard Protect Circuits

2-Channel Isolated RS232 Expansion HAT For Raspberry Pi, SC16IS752+SP3232 Solution, With Multi Onboard Protection Circuits

Overview

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.

Features

• 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)

Specifications

• 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

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

Example

Note: the Raspberry Pi and serial cables are NOT included.

Pinouts

Dimension

How to use: Please refero to : www.waveshare.com/wiki/2-CH_RS232_HAT

Weight: 0.039KG approx

Note: this HAT doesn’t come with any serial cable, you may also want to pick up the following cables for easy use:

• Serial Cable Dual Female Crossover: for connecting RS232 devices with male connector, OR for self transceiving test of the HAT’s 2 channels RS232

• Serial Cable Male to Female Straight Through: for connecting RS232 devices with female connector

Packing List:

1 x 2-CH RS232 HAT

1 x 2x20PIN female pinheader

1 x RPi screws pack (2pcs)

(not include Raspberry Pi and cable)