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HTU21D Datasheet(PDF) 2 Page - Humirel

Part # HTU21D
Description  MEAS HTU21D XPLAINED PRO BOARD
PDF  7 Pages
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Manufacturer  HUMIREL [Humirel]
Direct Link  http://www.humirel.com
Logo HUMIREL - Humirel

HTU21D Datasheet(HTML) 2 Page - Humirel

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MEAS HTU21D XPLAINED PRO BOARD
Digital Humidity DCS Development Tools
SENSOR SOLUTIONS /// MEAS HTU21D XPLAINED PRO BOARD
062017
Page 2
Connector Pin Assignments (I2C Communications)
System Plug
Dimensions (mm)
Detailed Description
I2C Interface
The peripheral module can interface to the host being plugged directly into an Xplained Pro extension port (configured for I2C)
through connector JP1.
External Control Signals
The IC operates as an I2C slave using the standard 2 wire I2C connection scheme. The IC is controlled either by the host
(through the Xplained Pro connector). In cases where one or more of the SCL and SDA signals are driven from an external
source, 10k resistors R1, R2 provide pull-up. However, this also increases the apparent load to the external driving source. If
the external source is not capable of driving these loads (10k), they should be removed.
Reference Materials
The complete software kit is available for download at: Link to HTU21D_CPROJ.zip
Connector JP1
Pin No.
Signal
Description
Pin No.
Signal
Description
1
ID
Hardware identification
11
SDA
TWI Serial Data
2
GND
Ground
12
SCL
TWI Serial Clock
3
N/C
Not Connected
13
N/C
Not Connected
4
N/C
Not Connected
14
N/C
Not Connected
5
N/C
Not Connected
15
N/C
Not Connected
6
N/C
Not Connected
16
N/C
Not Connected
7
N/C
Not Connected
17
N/C
Not Connected
8
N/C
Not Connected
18
N/C
Not Connected
9
N/C
Not Connected
19
GND
Ground
10
N/C
Not Connected
20
Vdd
Power Supply



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