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PCF85263ATL/A Datasheet(PDF) 19 Page - NXP Semiconductors

Part # PCF85263ATL/A
Description  Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus
PDF  92 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF85263ATL/A Datasheet(HTML) 19 Page - NXP Semiconductors

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NXP Semiconductors
PCF85263A
Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus
aaa-009582
SECOND ALARM1
SECOND TIME
SEC_A1E
0
1
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
0
1
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 13. 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.
PCF85263A
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
Product data sheet
Rev. 5 — 1 February 2021
19 / 92



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