The WAVE-21648 is a Raspberry Pi HAT designed as an isolated RS485 and RS232 expansion board. It adopts SC16IS752+SP3485, SP3232 scheme, built-in power isolation, ADI magnetic coupling isolation and TVS and other protection.
Features
- Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
- Adopts the combination scheme of SC16IS752, SP3485 and SP3232, converts SPI to one RS485 and one RS232
- Onboard resettable fuse and protection diodes, ensure the stable output of RS485 current and voltage, prevent over-current and over-voltage, improve shock resistance
- Onboard TVS (Transient Voltage Suppressor), can effectively suppress surge voltage and transient spike voltage in the circuit, lightning proof & anti-electrostatic
- Breakout SPI control pins, for connecting with Arduino and other host control boards
- Comes with development resources and manual (examples in C and Python)
Specifications
- UART EXPANSION CHIP: SC16IS752
- COMMUNICATION INTERFACE: SPI
- RS485 TRANSCEIVER: SP3485
- RS232 TRANSCEIVER: SP3232
- DATA RATE: Up to 921600bps
- OPERATING VOLTAGE: 5V
- MOUNTING HOLE SIZE: 3.0mm
- DIMENSIONS: 65mm × 56.5mm
Interface
Board and Dimensions
| 1 | Raspberry Pi GPIO interface for connecting to the Raspberry Pi Board |
10 | B0505LS Power Isolation Module |
| 2 | MCU control interface for connecting to other host boards such as Arduino |
11 | RT9193-33 power chip |
| 3 | RS485 interface | 12 | TVS (Transient Voltage Suppressor) |
| 4 | RS232 interface (DB9 male) | 13 | Resettable Fuse |
| 5 | SC16IS752 UART chip | 14 | Status Indicator PWR: Power indicator RXD/TXD: UART transceiving indicator |
| 6 | SP3485 RS485 Transceiver | 15 | RS485 120Ω terminal resistor on/off |
| 7 | SP3232 RS232 Transceiver | 16 | Interrupt pin switching Use D24 pin by default, can be changed to D16/D12/D25 pin by re-soldering the position of 0Ω resistor |
| 8 | π142 Digital Isolator chip | 17 | RS485 operating mode selection Semi-automatic: A=1, B=0 Full-automatic: A=0, B=1 |
| 9 | PC817 Optocoupler Isolation |
Resources
Shipping List
Weight: 0.033 kg
- RS485 RS232 HAT x1
- 2X20PIN header x1
- Standoffs pack (2pcs) x1
WARNING
