PCF85263ATSLASHA datasheet(44/92 Pages) NXP

부품명	PCF85263AT/A

상세설명	Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus

PDF	92 Pages

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제조업체	NXP [NXP Semiconductors]

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44 / 92 page

NXP Semiconductors

PCF85263A

Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus

aaa-010426

internal power supply

cleared via interface

BSF

Vth = 1.5 V

VDD (= 0 V)

VBAT = 1.2 V

VDD

INTA

battery mode indication

interface active

interface inactive

interface active

I2C

Figure 27. Switching at the higher of VBAT or Vth

7.11.3.4 Switching at the lower of VBAT and Vth level, BSM[1:0] = 11

With this mode switching takes place when VDD falls below the lower of Vth or VBAT.

In Figure 28, 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 VBAT.

aaa-010429

internal power supply

cleared via interface

BSF

Vth = 1.5 V

VDD (= 0 V)

VBAT = 1.2 V

VDD

INTA

battery mode indication

interface active

interface inactive

interface active

I2C

Figure 28. Switching at the lower of VBAT or Vth

PCF85263A

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 5 — 1 February 2021

44 / 92

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