MB3U ICHAUS [IC-Haus GmbH], MB3U Datasheet - Page 2

• Manufacturer Part Number: MB3U
• Description: BiSS TO PC-USB ADAPTER
• Manufacturer: ICHAUS [IC-Haus GmbH]

• Serial computer bus communication I2C
• Serial computer bus communication SPI
• Sensor supply sourced from the USB port
• I2C data rates of up to 320 kHz
• USB 2.0 compatible
BiSS Plug Pin Configuration
PC-USB Adapter With I2C Extension
The BiSS and I2C to PC-USB Adapter has an addi-
tional plug for I2C or SPI communication. The USB
port supplies the sensors via the I2C plug with 5 V (up
to 250 mA, through Pin 4 - no galvanic isolation). If
there is load applied to the BiSS connector, the max-
imum 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.
Technical Data I2C / SPI Interface
* 100 mA for +5 V and +12 V available starting from 2008
Pin
1
2
3
4
5
6
7
8
9
Power Supply Socket
Inner contact
Outer contact
MB3U, MB3U-I2C
BiSS TO PC-USB ADAPTER
(+5 V up to 250 mA) without isolation
Name
VB
MA +
MA -
VDD
MO -
GND
SL +
SL -
MO +
Function
+12 V Sensor supply (90 mA
Optional: powered by ext. supply
Clock output P
Clock output N
+5 V Sensor supply (50 mA
+5 V High-level signal
Optional: master data output N
Ground (0 V)
Data input P
Data input N
0 V Low-level signal
Optional: master data output P
Negative pole
Pos. pole (9 to 15 V DC, 1 A
max
max
max
)*
)
)*
I2C Plug Pin Configuration For I2C-Link
Note: To use I2C, pin 7 and pin 9 must be short.
I2C Plug Pin Configuration For SPI-Link
PIN
1
2
3
4
5
6
7
8
9
10
PIN
1
2
3
4
5
6
7
8
9
10
Power Supply Socket
2-pole, 6.6/1.9 mm
DIN 45323
Name
SCL
GND
-
+5 V
-
-
SDA
-
SDA
GND
Name
SCLK
GND
-
+5 V
-
-
MOSI
NCS
MISO
GND
Figure 2: iC-MB3 iCSY MB3U-I2C
Function
Serial Clock Line
Ground
Reserved
Supply Voltage
Reserved
Reserved
Serial Data Line
Reserved
Serial Data Line
Ground
Function
Serial Clock
Ground
Reserved
Supply Voltage
Reserved
Reserved
Master Out Slave IN
Not Chip Select
Master In Slave Out
Ground
USB-B Plug
4-pole
BiSS Plug
9-pole SUB-D
Rev B2, Page 2/7
I2C Plug
10-pole
size approx.
42 x 95 x 24 mm
2
1