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AN4450 Datasheet(PDF) 14 Page - STMicroelectronics

No. de pieza AN4450
Descripción Electrónicos  Hardware and software guidelines for use of LPS25H pressure sensor
PDF  26 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN4450 Datasheet(HTML) 14 Page - STMicroelectronics

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Power supply: consumption estimation and optimization
AN4450
14/26
DocID025978 Rev 1
3.1
Common rules for low power consumption
Here are some notes about possible sources of power leakage:
–
Do not leave any input pin un-terminated (floating). This may leave the internal
circuit in undefined state, creating/introducing extra power consumption. Connect
unused input pins (such as CS, and SA0 if a single sensor is used on the I2C bus)
to VDD_IO. Use a pull-up resistor where needed.
–
Do not connect a push-pull output pin directly to GND or VDD_IO (unless it can be
ensured that no change on that pin status will be made by SW).
–
Select the proper I2C pull-up resistor (to VDD_IO) according to the bus load and
working frequency.



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