JUMO 405101, Описание интерфейса

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2 I²C - communication
2 I²C - communication
2.1 General
The digital pressure measuring cell is equipped with a digital I²C interface and optionally an analog out-
put.
The communication via the I²C interface is described in the following chapters. This includes the correct
electrical connection, the entire design as an I²C-bus with master, slave and pull-up resistors. Addition-
ally, the digital communication is described to read out the pressure value, as well as other device infor-
mation. Finally the correct interpretation and conversion of the digital value into a decimal pressure- or
temperature value is depicted. Furthermore configuration possibilities of the digital pressure measuring
cell are described by using the corresponding software
 see chapter 4 "PC software", Page 19.
NOTE!
Additional information can be found in the data sheet 40510100T10Z001K000 and in the I
2
C-bus spec-
ification and user manual UM10204 on www.nxp.com.
2.2 Interface connection
2.2.1 Pin assignment
2.2.2 Cabling
NOTE!
Be careful with cabling over more than a few centimetres.
The I
2
C-bus is not a field-bus and only EMC safe if the interconnections are short or screened by the
surrounding housing of the whole application or a suitable cable.
Electrical
connec-
tion 05 24 39
Pins Braids JST-plug (Type BM05B-
SRSS-TB)
A
out
2 YE 5
GND 3 BK 4
U
B
4 RD 3
SCL 6 WH 2
SDA 7 BU 1