2-Channel Isolated RS485 Expansion HAT for Raspberry Pi
20,92 €
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- Description
- Product information
Description
2-Channel Isolated RS485 Expansion HAT The Raspberry Pi, SC16IS752 + SP3485 Solution, With Multi Onboard Protection Circuits
Overview
This is a 2-channel isolated RS485 expansion HAT designed for Raspberry Pi, adopts the SC16IS752 + SP3485 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 RS485 for auto transceiving via SPI interface. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for fields like industrial automation.
- Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
- Adopts SC16IS752 + SP3485 dual chip combination, converts SPI to RS485, data rate up to 921600bps
- Allows transceiving data manually or automatically, configured by DIP switch
- Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
- Onboard auto-recovery fuse and protection diodes, ensures the current / voltage stable outputs, provides over-current / over-voltage proof, improves shock resistance
- 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
- RS485 transceivers: SP3485
- 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
- ADUM1412 digital isolator
- PC817 optocoupler
- SP3485 RS485 transceiver
- B0505LS power supply isolation module
- RT9193-33 power chip
- SMAJ12CA transient suppress diode array
- Auto-recovery merged
- Status indicators
PWR: power indicator
RXD / TXD: UART transceiving indicator - Raspberry Pi GPIO connectors: for connecting Raspberry Pi
- RS485 terminal
- MCU control headers: for connecting host control boards like Arduino
- 120Ω terminal resistor switch
- Pin switch interrupts
- Operating mode selection
Half-auto: A = 0, B = 1
Full-auto: A = 1, B = 0
example
Pinouts
PIN | RASPBERRY PI (BCM) | DESCRIPTION |
---|---|---|
VCC | 5V | 3.3V / 5V power supply |
GND | GND | Ground |
SCK pins can be used | P21 (SPI1 SCLK) | SPI clock input |
MOTION | P20 (SPI1 MOSI) | SPI data input |
MISO | P19 (SPI1 MISO) | SPI data output |
CS | P18 (SPI1CS) | SPI chip select |
IRQ | P24 | Interrupt output |
EN1 | P27 | Channel 1 TX / RX enable: high for TX, low for RX |
EN2 | P22 | Channel 2 TX / RX enable: high for TX, low for RX |
Size
Content Package
- 2-CH RS485 HAT x1
- 2x20PIN female pin header x1
- RPi screws pack (2pcs) x1
Resources
Documentation
Demo codes
Datasheets
Product information
BRAND | wave share |
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