I2C Master

RS485 I2C Adapter

  • RS485 address adjustable via DIP switch
  • Adjustable I2C frequency up to 400kHz
  • On board I2C level shifter, I2C levels from 2.5V to 15V
  • Interrupt input for external events
  • Simple software interface / ASCII commands
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Datasheet

Description

The RS485 I2C adapter is an universal applicable I2C-tool with a 128 bytes of buffer and an adjustable SCL-frequency up to 400 kHz. With the RS485 I2C adapter as master numerous bus participants can be adressed such as IOExpander, sensors, LCDs, 7-segment display, stepping motors, AD/DA converters, real time clocks, tone generators, RAM, EEProms, etc.

 

The RS485-address of the adapter is adjustable via an 8bit DIP-switch. Thus several adapters could be attached at a RS485 bus.

 

The adapter contains an I2C level shifter on board. Thus, it is possible to connect the adapter to an I2C bus having different voltage levels between 2.5V and 15V.

 

Labview VIs and a 32bit DLL (for Windows) are included in delivery. This makes the integration of the adapter into own applications possible. It is possible to communicate with the adapter using Windows API functions such as CreateFile(), WriteFile() and ReadFile(). A simple software interface (ASCII commands) is available.

 

Some of the software Tools are for the developer very helpfully. Thus it is possible to test immediately I2C devices. The software “IIC Control” supports EEPROMS of 1kbit (128 bytes) to 1Mbit (128k byte).

Features

  • RS485 address adjustable via DIP switch
  • Adjustable I2C frequency up to max. 400kHz
  • On board I2C level shifter, I2C levels from 2.5V to 15V
  • Supports multi-master
  • Master transmit & receive
  • Supports clock streching
  • 7bit addressing
  • Interrupt input for external events
  • Simple software interface / ASCII commands
  • 32Bit DLL for Windows
  • Labview VIs

 

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PRICE BY MODEL

Model

Fixed Baud

Adj. Baud

RS485 Address

256 (0 .. 255)

32 (0 .. 31)

Baud rate

19200 bps

Adjustable

Part number

#010201

#010202

85,- EUR

85,- EUR

Downloads

Manual and datasheet

Download

Labview programming example without DLLs

Download