PCF8564A datasheet(44/59 Pages) NXP

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PCA85063A

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Product data sheet

Rev. 4 — 30 March 2018

44 of 59

NXP Semiconductors

PCA85063A

Automotive Real-Time Clock/calendar with alarm function and I2C-bus

14. Application information

15. Test information

15.1 Quality information

This product has been qualified in accordance with the Automotive Electronics Council

(AEC) standard Q100 - Failure mechanism based stress test qualification for integrated

circuits, and is suitable for use in automotive applications.

A 1 farad super capacitor combined with a low VF diode can be used as a standby or back-up

supply. With the RTC in its minimum power configuration that is, timer off and CLKOUT off, the

RTC may operate for weeks.

(1) R1 limits the inrush current to the super capacitor at power-on.

(2) NXP recommends tying VDD of the device and VDD of all the external pull-up resistors to the same

Power Supply.

(3) NXP also recommends the customer place accessible 'Pads/TP-test point' on the layout so as to

enable a 'hard'' grounding of the power supply VDD in the event a full discharge cannot be attained.

Fig 29. Application diagram for PCA85063A

PCA85063A

MASTER

TRANSMITTER/

RECEIVER

OSCI

OSCO

VSS

SDA

aaa-013719

SCL

SDA

(I2C-bus)

SCL

SDA

SCL

INT

VDD

VDD(2)

1 F

R1(1)

TP(3)

100 nF

R: pull-up resistor

R =

CLKOUT

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