HDPM01
· Integrated pressure sensor
· 300-1100hpa absolute Pressure Range
· ROHS compliant
· 11 coefficients for software compensation
stored on chip
· Full integration of 2-axis magnetic sensors and electronics
circuits resulting in less external components needed.
· I
2
C Slave, FAST (=400 KHz) mode
· Power up/down function available through I
2
C interface
· 2.4V~3.6V wide power supply operation supported
· SET/RESET strap drive
· 512counts/gauss
Description
HDPM01 module includes a pressure module and a compass module
The HDPM01 pressure module 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, 11 unique coefficients were stored on the chip, thus accurate pressure
and temperature reading can be realized. HM03 is a low power, low voltage device with automatic
power down switching. I
2
C Serial Interface is used for communications with a microprocessor. Sensor
packaging options are SMD (with metal cap)
The HDPMO1 is a dual-axis magnetic sensor, it is a complete sensing system with on-chip signal
processing and integrated I2C bus, allowing the device to be connected directly to a microprocessor
eliminating the need for A/D converters or timing resources. It can measure magnetic field with a full
range of ±2 gausses and a sensitivity of 512counts/gauss @3.0 V at 25°C.
Features
. Supply voltage 2.2v-3.6v
. -20°C to + 60°C operating range
. No external components required
. I
2
C digital output with 400 KHz, fast mode operation.
Applications
. Pressure measurement and control systems
. Mobile altimeter/barometer systems
. Weather forecast products
. Adventure or multi-mode watches
. Electronic Compass
. GPS Navigation
. Position Sensing
. Vehicle Detection
. Magnetometry
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com
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HDPM01
2. PIN Description
Pin Name
GND
VDD
MCLK
XCLR
SDA
SCL
Pin
Number
6
5
4
3
2
1
Type
G
P
I
I
I/O
I
Function
power ground
power VCC
master clock(32k) input
ADC reset input (keep low when system is in idle
state)
2
. I C data input and output
I
2
C clock input
* XCLR is to reset the AD converter (active low). XCLR should be set to high only during
AD conversion phase(reading D1,D2), at all other states, such as reading calibration
factors, this pin should be kept low.
* The quality of the MCLK signal can significantly influence the current consumption of
the pressure module. To obtain minimum current, remember to supply good quality
MCLK signal
3.Absolute Maximum Ratings
Parameter
Supply Voltage
Over pressure
Storage Temperature
Maximum Exposed Field
Symbol
VDD
P
Tstg
Min
-0.5
-30
Max
4
15
90
10000
Unit
V
Bar(abs)
°C
gauss
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com
3
HDPM01
4.2 Recommended Operating Conditions of compass
(Measurements @ 25°C, unless otherwise noted; VDA = VDD= 3.0V unless otherwise specified)
Note:
1: 2.4V is the minimum operation voltage, or VDA should not be lower than 2.4V.
2: Accuracy is dependent on system design, calibration and compensation algorithms
used.
The specification is based upon using the HOPERF evaluation board and associate
software.
3: By design.
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com
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