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PDF DHT11 Data sheet ( Hoja de datos )
| Número de pieza | DHT11 | |
| Descripción | Humidity and Temperature Sensor | |
| Fabricantes | Sunrom | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de DHT11 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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For more products visit our website http://www.sunrom.com
Document: Datasheet
Date: 20-Jun-12
Model #: 3732
DHT11 - Humidity and Temperature Sensor
The DHT11 is a basic, low-cost digital temperature
and humidity sensor. It uses a capacitive humidity
sensor and a thermistor to measure the
surrounding air, and spits out a digital signal on the
data pin (no analog input pins needed).
Its fairly simple to use, but requires careful timing to
grab data. The only real downside of this sensor is
you can only get new data from it once every 2
seconds.
Product’s Page: www.sunrom.com/p-1141.html
Features
• Full range temperature compensated
• Relative humidity and temperature
measurement
• Calibrated digital signal
• Outstanding long-term stability
• Extra components not needed
• Long transmission distance
• Low power consumption
• 4 pins packaged and fully interchangeable
Details
This sensor includes a resistive-type humidity measurement component and an NTC temperature
measurement component, and connects to a high-performance 8-bit microcontroller, offering
excellent quality, fast response, anti-interference ability and cost-effectiveness. Each DHT11
element is strictly calibrated in the laboratory that is extremely accurate on humidity calibration. The
calibration coefficients are stored as programmes in the OTP memory, which are used by the
sensor’s internal signal detecting process.
The single-wire serial interface makes system integration quick and easy. Its small size, low power
consumption and up-to-20 meter signal transmission making it the best choice for various
applications, including those most demanding ones. The component is 4-pin single row pin
package.
Free Datasheet http://www.datasheetlist.com/
1 page  
segments. If Check Sum's value isn't the same as the sum of the first 4 segments that means
that data received isn't correct.
How to Identify Bits: Each bit sent is a follow of ~54uS Low in the bus and ~24uS to 70uS High
depending on the value of the bit.
Bit '0' : ~54uS Low and ~24uS High
Bit '1' : ~54uS Low and ~70uS High
End Of Frame: At the end of packet DHT sends a ~54uS Low level, pulls the bus to High and goes
to sleep mode.
5 Sunrom Technologies
Your Source for Embedded Systems
Visit us at www.sunrom.com
Free Datasheet http://www.datasheetlist.com/
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet DHT11.PDF ] | |
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