Waveshare 17498 2-CH RS232 HAT
Description
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
Example
Note: the Raspberry Pi and serial cables are NOT included.
Pinouts
| 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 |
Dimension
Development Resources
Package Contents
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
- 2-CH RS232 HAT x1
- 2x20PIN female pinheader x1
- RPi screws pack (2pcs) x1
| Shipping weight: | 0.05 Kg |
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