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DPP301Z000

P1-P3P4-P4
HTU21D
PERIPHERAL MODULE
Digital Humidity and Temperature Sensor
General Description
The HTU21D peripheral module provides the necessary hardware to interface
the HTU21D digital relative humidity and temperature sensor to any system that
utilizes Pmod compatible expansion ports configurable for I
2
C communication.
The HTU21D sensor is a self-contained humidity and temperature sensor that is
fully calibrated during manufacture. The sensor can operate from 1.5V to 3.6V,
has selectable resolution, low battery detect, and checksum capability. The
HTU21D has a low current stand-by mode for power-sensitive applications.
Specifications
• Measures relative humidity from 0% to 100%
• Measures temperature from -40°C to 125°C
• Humidity resolution selectable from 8 to 12 bits
• Temperature resolution selectable from 11 to 14 bits
• 0.14 µA sleep current
• 500 µA operating current (during measurement only)
• ±3% accuracy
Features
• 12-pin Pmod compatible connector
• I
2
C interface
• Secondary 12-pin connector allows daisy chain
• FPGA fabric available for download
• µC C code available for download
• Built-in heater to remove condensation
• Available with PTFE environmental filter over the sensor
• Electronic ID code stored on chip
HTU21D
Peripheral Module
SENSOR SOLUTIONS /// HTU21D PERIPHERAL MODULE
Page 2
Performance
• Covers full humidity range of 0 to 100% RH
• Broad temperature range of -40°C to 125°C
• Use output data to calculate absolute humidity and dew point
• Quick recovery from condensation – 10 seconds
• Fast response time to humidity changes – 5 seconds typical
• Fully calibrated and interchangeable
• Recovers fully from condensation
• Fast digital conversion time – 14 mS typical
Schematic
HTU21D
Peripheral Module
SENSOR SOLUTIONS /// HTU21D PERIPHERAL MODULE
Page 3
Connector Pin Assignments (1
2
C Communications)
System Plug (Table 1) Expansion Socket (Table 2)
Dimensions(mm)
Connector J1
Pin No.
Signal
Description
1
N/C
Not Connected
2
N/C
Not Connected
3
SCL
I
2
C Serial Clock
4
SDA
I
2
C Serial Data
5
GND
Ground
6
Vdd
Power Supply
7
N/C
Not Connected
8
N/C
Not Connected
9
SCL
I
2
C Serial Clock
10
SDA
I
2
C Serial Data
11
GND
Ground
12
Vdd
Power Supply
Pin No.
Signal
Description
1
N/C
Not Connected
2
N/C
Not Connected
3
SCL
I
2
C Serial Clock
4
SDA
I
2
C Serial Data
5
GND
Ground
6
Vdd
Power Supply
7
N/C
Not Connected
8
N/C
Not Connected
9
N/C
Not Connected
10
N/C
Not Connected
11
N/C
Not Connected
12
N/C
Not Connected
P1-P3P4-P4

DPP301Z000

Mfr. #:
Buy DPP301Z000
Manufacturer:
TE Connectivity
Description:
HTU21D Digital Humidity and Temperature Sensor Peripheral Module (Alt: DPP301Z000)
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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