2-Channel Isolated RS232 Expansion HAT for Raspberry Pi
This is a 2-channel isolated RS232 expansion HAT designed for the Raspberry Pi, adopting the SC16IS752+SP3232 solution, with embedded protection circuits including power supply isolation, ADI magnetical isolation and TVS diode.
It’s easy to control the 2-channel RS232 via SPI interface. Due to its fast communication, stability, reliability, and safety, it’s an ideal choice for uses such as industrial automation.
Note: Cables not included
Features
- Standard Raspberry Pi 40-pin GPIO extension header
- Adopts SC16IS752+SP3232 dual-chip combination, converts SPI to RS232, data rate up to 921600bps
- Onboard TVS (Transient Voltage Suppressor), effectively suppresses 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 such as 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
Resources
- Wiki and user guide
Pinout
| PIN | RASPBERRY PI (BCM) | DESCRIPTION |
|---|---|---|
| VCC | 5V | 3.3V/5V power supply |
| GND | GND | Ground |
| SCK | P21 (SPI1 SCLK) | SPI clock input |
| MOSI | P20 (SPI1 MOSI) | SPI data input |
| MISO | P19 (SPI1 MISO) | SPI data output |
| CS | P18 (SPI1 CS) | SPI chip select |
| IRQ | P24 | Interrupt output |
Package Contents
- 2-Channel CAN HAT
- Nylon standoffs pack (2 standoffs, 4 screws)
- 2 x 20PIN female header
