2-Channel Isolated RS232 Expansion HAT for Raspberry Pi

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:

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

Note:  Raspberry Pi and serial cables are NOT included.
 

Note: 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

Package Includes:
 

• 1x 2-CH RS232 HAT
• 1x 2x20PIN female pinheader
• 1x RPi screws pack (2pcs)

Development Resources:
 

• Product Page
• Wiki
• Schematic                                            
• SC16IS752 Datasheet