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ADXL346 Scheda tecnica(PDF) 11 Page - Analog Devices |
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ADXL346 Scheda tecnica(HTML) 11 Page - Analog Devices |
11 / 32 page Preliminary Technical Data ADXL346 Rev. PrC | Page 11 of 32 Auto Sleep Mode Additional power can be saved if the ADXL346 automatically switches to sleep mode during periods of inactivity. To enable this feature, set the THRESH_INACT register (Address 0x25) and the TIME_INACT register (Address 0x26) each to a value that signifies inactivity (the appropriate value depends on the application), and then set the AUTO_SLEEP bit and the link bit in the POWER_CTL register (Address 0x2D). Current consumption at the sub-8 Hz data rates used in this mode is typically 35 µA for a VS of 2.5 V. Standby Mode For even lower power operation, standby mode can be used. In standby mode, current consumption is reduced to 1 µA (typical). In this mode, no measurements are made. Standby mode is entered by clearing the measure bit (Bit 3) in the POWER_CTL register (Address 0x2D). Placing the device into standby mode preserves the contents of FIFO. |
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