PCF8564A datasheet(13/65 Pages) NXP

13 / 65 page

PCF85063A

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Product data sheet

Rev. 7 — 30 March 2018

13 of 65

NXP Semiconductors

PCF85063A

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

The PCF85063A resets to:

Time — 00:00:00

Date — 20000101

Weekday — Saturday

8.2.2 Register Control_2

[1]

Default value.

0Fh

Weekday_alarm

10000000

10h

Timer_value

00000000

11h

Timer_mode

00011000

Table 8.

Registers reset values …continued

Address

Bit

Table 9.

Control_2 - control and status register 2 (address 01h) bit description

Bit

Symbol

Value

Description

Reference

7AIE

alarm interrupt

Section 8.2.2.1

Section 8.5.6

0[1]

disabled

enabled

6AF

alarm flag

Section 8.2.2.1

Section 8.5.6

0[1]

read: alarm flag inactive

write: alarm flag is cleared

read: alarm flag active

write: alarm flag remains unchanged

5MI

minute interrupt

Section 8.2.2.2

Section 8.2.2.3

0[1]

disabled

enabled

4HMI

half minute interrupt

Section 8.2.2.2

Section 8.2.2.3

0[1]

disabled

enabled

3TF

timer flag

Section 8.2.2.1

Section 8.2.2.3

Section 8.6.3

0[1]

no timer interrupt generated

flag set when timer interrupt generated

2 to 0

COF[2:0]

see Table 11

CLKOUT control

Section 8.2.2.4

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