I C Precision Altimeter - Farnell
I C Precision Altimeter - Farnell
I C Precision Altimeter - Farnell
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1 Block Diagram and Pin Descriptions<br />
Reference<br />
Reference<br />
+<br />
Regulator<br />
Regulator<br />
VVdd<br />
DD<br />
VddIO<br />
V DDIO<br />
CAP<br />
SDA<br />
Pressure<br />
Sensor<br />
Sense<br />
Amp<br />
Temp<br />
MUX<br />
ADC<br />
Digital Signal<br />
Processing and<br />
Control<br />
SCL<br />
INT1<br />
INT2<br />
Clock oscillator<br />
Clock Oscillator<br />
Trim Logic<br />
Trim Logic<br />
Figure 1. Block Diagram<br />
Table 1. Pin Descriptions<br />
Pin Name Function<br />
1 V DD V DD Power Supply Connection (1.95-3.6V)<br />
2 CAP External Capacitor<br />
3 GND Ground<br />
4 V DDIO Digital Interface Power Supply (1.62-3.6V)<br />
5 INT2 Pressure Interrupt 2<br />
6 INT1 Pressure Interrupt 1<br />
7 SDA I 2 C Serial Data<br />
8 SCL I 2 C Serial Clock<br />
MPL3115A2<br />
Sensors<br />
Freescale Semiconductor, Inc. 3