MB3U, MB3U-I2C

BiSS, SSI, PC-USB ADAPTER

Rev C3, Page 2/16

DESCRIPTION

The MB3U and MB3U-I2C adapters are USB based Windows® PC adapters. The BiSS to PC-USB adapters

enables BiSS or SSI sensors to be connected to a PC easily and at low cost. Only one BiSS to PC-USB

adapters is accessible per PC system. The USB port supplies the adapter as well as the connected sensor, for

which the 5V (up to 100 mA, through Pin 4)* and 12 V (up to 100 mA, through Pin 1)* as galvanically isolated

voltages are available. An optional external wall power supply can also be connected to deliver other voltages

or higher currents. The BiSS/SSI communication is accomplished by differential RS422 wires with separate

potentials and cycle rates of up to 10 Mbit/sec.

The BiSS and I2C to PC-USB Adapter has an additional plug for I2C or SPI communication. The USB port

supplies the sensors via the I2C plug with 5 V (up to 100 mA, through Pin 4 - no galvanic isolation). If there is

load applied to the BiSS connector, the maximum current supplied via the I2C plug is decreased. For more

power, an additional external power supply is recommended (the wall power supply does not supply the I2C

plug, see Figure 3). I2C multi-master capability is not provided.

The SPI and I2C master of MB3U-I2C are only supported by product specific APIs and software for

iC-Haus product evaluation and programming.

9 Pin SUB-D Male BiSS Interface Connector Functions and Features:

• Up to 3 BiSS slaves

• RS422 10 MBit/s maximum data transfer rate

• BiSS C unidirectional and BiSS B/C master

• SSI master

• I2C and SPI master (MB3U-I2C only)

• BiSS master BiSS iC-MB3 TSSOP24 based

• USB 2.0 compatible with up to 12 MBit/s data transfer

• USB bus provides power adapter and optionally to devices

• Galvanic encoder signal isolation and isolated sensor supply sourced from the USB port (+12 V and +5 V /

150 mA together)*

• Plug-in power supply can be connected for sensors with higher power needs(+12 V / 500 mA, +5 V / 250 mA)*

• Available 32 and 64 bit drivers for Windows®10, 8, 7, Vista, XP, 2000

The MB3U is a PC-USB interface BiSS / SSI master based on iC-MB3 TSSOP24 system design.

* 150 mA for +5 V and +12 V available starting from 2008

10 Pin Pigtail 5x2 Female SPI and I2C Interface Connector Functions and Features:

• SPI or I2C capable by pin connection

• Up to 6 MBit/s maximum data transfer rate with SPI

• 100 kBit/s maximum data transfer rate with I2C

• Single master systems

• Master operation based on FTDI™USB dual serial bridging device

• USB 2.0 compatible with up to 12 MBit/s data transfer

• USB bus provides power adapter and optionally to devices

• No galvanic isolation, Sensor supply sourced from the USB port (5 V up to 200 mA)

• Available 32 and 64 bit FTDI™drivers for Windows 10, 8, 7, Vista, XP, 2000

The device offered here is a multifunctional device that contains integrated BiSS C interface components. The BiSS C process is

protected by patent DE 10310622 B4 owned by iC-Haus GmbH. Users benefit from the open BiSS C protocol with a free license which

is necessary when using the BiSS C protocol in conjunction with this iC.

Download the license at www.biss-interface.com/BUA