PCF85063ATLSLASH1 datasheet(15/55 Pages) NXP

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NXP Semiconductors

PCF85063A

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

Correction value

Update every nth hour

Minute

Correction pulses on INT

per minute[1]

+59 or -59

00 to 58

+60 or -60

00 to 59

+61 or -61

2nd and next hour

00 to 59

+62 or -62

2nd and next hour

00 and 01

00 to 59

+63 or -63

2nd and next hour

00, 01, and 02

00 to 59

-64

2nd and next hour

00, 01, 02, and 03

Table 13. Correction pulses for MODE = 0...continued

[1]

The correction pulses on pin INT are 1⁄64 s wide.

In MODE = 0, any timer or clock output using a frequency below 64 Hz is affected by the clock correction (see

Table 14).

Frequency (Hz)

Effect of correction

CLKOUT

32 768

no effect

16 384

no effect

8 192

no effect

4 096

no effect

2 048

no effect

1 024

no effect

affected

Timer source clock

4 096

no effect

affected

1⁄60

affected

Table 14. Effect of correction pulses on frequencies for MODE = 0

7.2.3.2 Correction when MODE = 1

The correction is triggered once every four minutes and then correction pulses are applied once per second

up to a maximum of 60 pulses. When correction values greater than 60 pulses are used, additional correction

pulses are made in the 59th second.

Clock correction is made more frequently in MODE = 1; however, this can result in higher power consumption.

PCF85063A

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

Product data sheet

Rev. 7.1 — 8 November 2023

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