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PDF HP02S Data sheet ( Hoja de datos )
| Número de pieza | HP02S | |
| Descripción | BAROMETER MODULE | |
| Fabricantes | HOPERF | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de HP02S (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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Hope RF
2011-6-8
+
BAROMETER MODULE
HP02S
Version: 1.4
Description
. Integrated pressure sensor
. Pressure Range 300-1100hpa
. 16 Bit Σ−Δ ADC
. 5 coefficients for software compensation
stored on chip
. I2C Serial Interface
. One system clock line (32768Hz)
. One hardware controlled reset line
. Low voltage, low power
The HP02S includes a piezo-resistive pressure sensor and an ADC interface. It provides
16 bit word data for pressure and temperature related voltage. With the help of a highly
accurate calibration of the senor, 5 unique coefficients were stored on the chip, thus
accurate pressure and temperature reading can be realized. HP02S is a low power, low
voltage device with automatic power down switching. I2C Serial Interface is used for
communications with a microprocessor.
Features
. 14 Bit ENOB ADC resolution
. Supply voltage 2.0v-5.0v
. 0° C to + 50° C operating range
Applications
. Pressure measurement and control systems
. Mobile altimeter/barometer systems
. Weather forecast products
. Adventure or multi-mode watches
Block Diagram
1
Free Datasheet http://www.datasheet4u.com/
1 page  
Hope RF
BAROMETER MODULE
2011-6-8
LSB: conversion result (MSB bit clocked out first).
HP02S
Version: 1.4
Remark:
Before start an AD conversion cycle, remember to set XCLR pin high so that the system
is no longer in the reset state.
All data read from the module is in hex format.
After first power on, the first read data should be disregarded, and only the second value
be used. This can assure that unstable reading after power on reset can be filtered out.
For altitude calculation purpose, use averaging scheme to improve the stability of
pressure reading, we recommend making at least 8 times averaging so that it is possible to
achieve 0.3m accuracy (about 1 foot).
Typical Application Circuit Diagram:
Remark：
In the battery supply product this application need be changed as:
32 KHz signal is outputted via the port of the MCU instead of the 32.768 KHz crystal to
MCLK pin. The MCU will not output 32 KHz signal and keep low level when the
HP02S enter to standby mode.
5
Free Datasheet http://www.datasheet4u.com/
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet HP02S.PDF ] | |
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