*
MS5534C (RoHS ) BAROMETER MODULE
10 - 1100 mbar absolute pressure range
6 coefficients for software compensation stored
on-chip
Piezoresistive silicon micromachined sensor
Integrated miniature pressure sensor 9 x 9 mm
16 Bit ADC
3-wire serial interface
1 system clock line (32.768 kHz)
Low voltage and low power consumption
*
RoHS-compatible & Pb-free
DESCRIPTION
The MS5534C is a SMD-hybrid device including a piezoresistive pressure sensor and an ADC-Interface IC. It
provides a 16 Bit data word from a pressure and temperature dependent voltage. Additionally the module
contains 6 readable coefficients for a highly accurate software calibration of the sensor. MS5534C is a low
power, low voltage device with automatic power down (ON/OFF) switching. A 3-wire interface is used for all
communications with a microcontroller.
The MS5534C is fully software compatible to the previous versions (MS5534A and MS5534B). Compared to the
previous versions the ESD sensitivity level has been improved to 4kV on all pins.
FEATURES APPLICATIONS
Supply voltage 2.2 V to 3.6 V Mobile altimeter / barometer systems
Low supply current Weather control systems
-40C to +125C operation temperature Adventure or multi-mode watches
No external components required GPS receivers
BLOCK DIAGRAM
VDD
MCLK
Input MUX
+IN Digital
SENSOR
DIN
Interface
DOUT
dig.
ADC
Filter
-IN
SCLK
Memory
Sensor
(PROM)
Interface IC
64 bits
SGND
GND
Fig. 1: Block diagram MS5534C.
*
The European RoHS directive 2002/95/EC (Restriction of the use of certain Hazardous Substances in electrical and electronic equipment)
bans the use of lead, mercury, cadmium, hexavalent chromium and polybrominated biphenyls (PBB) or polybrominated diphenyl ethers
(PBDE).
DA5534C_003.doc June 16th, 2008 1
0005534C1175 ECN1118
PIN CONFIGURATION
Fig. 2: Pin configuration of MS5534CM.
Pin Name Pin Type Function
GND 1 G Ground
SCLK 2 I Serial data clock
DOUT 3 O Data output
DIN 4 I Data input
MCLK 5 I Master clock (32.768 kHz)
VDD 6 P Positive supply voltage
PEN (1) 7 I Programming enable
PV (1) 8 N Negative programming voltage
NOTES
1) Pin 7 (PEN) and PIN 8 (PV) are only used by the manufacturer for calibration purposes and should not be
connected.
ABSOLUTE MAXIMUM RATINGS
Parameter Symbol Conditions Min Max Unit Notes
o
Supply voltage VDD Ta = 25 C -0.3 4 V
o
Storage temperature T -40 +125 C 1
S
o
MS5534-CP, Ta = 25 C 5 bar
Overpressure P
o
MS5534-CM, Ta = 25 C 10 bar 2
NOTES
1) Storage and operation in an environment of dry and non-corrosive gases.
2) The MS5534CM is qualified referring to the ISO Standard 2281 and can withstand an absolute pressure of
11 bar in salt water or 100 m water respectively.
DA5534C_003.doc June 16th, 2008 2
0005534C1175 ECN1118