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PCF85263AT Datasheet(PDF) 48 Page - NXP Semiconductors

Part # PCF85263AT
Description  Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus
PDF  100 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF85263AT Datasheet(HTML) 48 Page - NXP Semiconductors

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PCF85263A
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© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 4.1 — 27 November 2015
48 of 100
NXP Semiconductors
PCF85263A
Tiny RTC with alarm, battery switch-over, and I2C-bus
8.11.3.3
Switching at the higher of VBAT or Vth level, BSM[1:0] = 10
With this mode switching takes place when VDD falls below the higher of Vth or VBAT. In
Figure 26, an example is given where the threshold is set to 1.5 V and a single cell battery
is connected to VBAT. In this example, switching to the battery voltage takes place when
VDD falls below Vth.
Fig 26. Switching at the higher of VBAT or Vth



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