PCF85363ATLSLASHA datasheet(18/86 Pages) NXP

18 / 86 page

NXP Semiconductors

PCF85363A

Tiny Real-Time Clock/calendar with 64 byte RAM, alarm function, battery switch-over time stamp input,

and I2C-bus

aaa-009582

SECOND ALARM1

SECOND TIME

SEC_A1E

SEC_A1E = 0

example

MINUTE ALARM1

MINUTE TIME

MIN_A1E

HOUR ALARM1

HOUR TIME

HR_A1E

set alarm flag A1F (1)

DAY ALARM1

DAY TIME

DAY_A1E

MONTH ALARM1

MONTH TIME

MON_A1E

check now signal

MIN_A2E = 0

example

MINUTE ALARM2

MINUTE TIME

MIN_A2E

HR_A2E

set alarm flag A2F (1)

WDAY_A2E

check now signal

HOUR ALARM2

HOUR TIME

WEEKDAY ALARM2

WEEKDAY TIME

1. Only when all enabled alarm settings are matching.

The flag is set

only on increment to a matched case (and not all the time it is equal).

Figure 11. Alarm1 and alarm2 function block diagram (RTC mode)

7.4.2 Alarms in stop-watch mode

In stop-watch mode, Alarm 1 can be configured from seconds to 999 999 hours. Alarm 2

operates on minutes up to 9 999 hours.

7.4.2.1 Alarm1 and alarm2 registers in stop-watch mode

Setting the time for alarm1 and alarm2: Only the information which is relevant for the

alarm condition must to be programmed. The unused parts are ignored.

PCF85363A

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

Product data sheet

Rev. 3.1 — 18 June 2021

18 / 86

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