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- Stock: 5 in Stock
- SKU: 17498
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Introduction
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.
Interfaces
| PIN | SYMBOL | Description |
|---|---|---|
| 1 | VCC | 3.3V/5V Power |
| 2 | GND | Ground |
| 3 | SCLK | SPI Clock input |
| 4 | MOSI | SPI Data input |
| 5 | MISO | SPI Data output |
| 6 | CS | SPI Chip Selection |
| 7 | IRQ | Interrupt output (Interrupt Request) |
Working principle
This product adopts SC16IS752 as a controller. SC16IS752 is a dual-channel high-performance UART expansion chip that supports SPI and I2C interfaces communication. This module uses the SPI interface. Onboard power isolation, ADI magnetic coupler isolation, onboard TVS (transient voltage suppression tube), self-recovery fuses, protection diodes, and automatic transceiver switching circuit. It can effectively suppress the surge voltage and transient peak voltage in the circuit, prevent lightning and static electricity, prevent over-voltage, improve the anti-impact ability, can conduct signal isolation, with high dependence, strong anti-interference, low power consumption advantages, etc.
How to use
We provide C and Python demo codes for Raspberry Pi. A quick testing example is provided in python.
Learn more know how at https://www.waveshare.com/wiki/2-CH_RS485_HAT
