WAVE-21648, Isolated RS485 RS232 Expansion HAT for Raspberry Pi, SPI Control

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US$29.80
WAVE-21648
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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

  1. RS485 RS232 HAT x1
  2. 2X20PIN header x1
  3. Standoffs pack (2pcs) x1
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