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PCF85263ATL/A Datasheet(PDF) 57 Page - NXP Semiconductors

Part # PCF85263ATL/A
Description  Tiny RTC/Calendar with Alarm Function, Battery Switch-Over, Time Stamp Input, and I2C-bus
PDF  102 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF85263ATL/A Datasheet(HTML) 57 Page - NXP Semiconductors

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NXP Semiconductors
PCF85263A
Tiny RTC/Calendar with Alarm Function, Battery Switch-Over, Time Stamp Input, and I2C-bus
Mode: Real-time clock, 100th second off
Time: 00:00:00.00
Date: 2000.01.01
Weekday: Saturday
Battery switch: On, switching on the lower threshold voltage
Oscillator: CL = 7 pF
Pins: INTA = 32 kHz output, CLK = 32 kHz output, TS = disabled
In the reset state, all registers are set according to Table 61.
Registers labeled as - remain unchanged.
Bit
Address
Register name
7
6
5
4
3
2
1
0
00h
100TH_seconds
0
0
0
0
0
0
0
0
01h
Seconds
1
0
0
0
0
0
0
0
02h
Minutes
0
0
0
0
0
0
0
0
03h
Hours
0
0
0
0
0
0
0
0
04h
Days
0
0
0
0
0
0
0
1
05h
Weekdays
0
0
0
0
0
1
1
0
06h
Months
0
0
0
0
0
0
0
1
07h
Years
0
0
0
0
0
0
0
0
Second_alarm1
08h
Second_alm1
-
-
-
-
-
-
-
-
Minute_alarm1
09h
Minute_alm1
-
-
-
-
-
-
-
-
Hour_alarm1
0Ah
Hr_xx_xx_00_alm1
-
-
-
-
-
-
-
-
Day_alarm1
0Bh
Hr_xx_00_xx_alm1
-
-
-
-
-
-
-
-
Month_alarm1
0Ch
Hr_00_xx_xx_alm1
-
-
-
-
-
-
-
-
Minute_alarm2
0Dh
Minute_alm2
-
-
-
-
-
-
-
-
Hour_alarm2
0Eh
Hr_xx_00_alm2
-
-
-
-
-
-
-
-
Weekday_alarm2
0Fh
Hr_00_xx_alm2
-
-
-
-
-
-
-
-
10h
Alarm enables
0
0
0
0
0
0
0
0
Table 61. Registers reset values
PCF85263A
All information provided in this document is subject to legal disclaimers.
© 2025 NXP B.V. All rights reserved.
Product data sheet
Rev. 5.4 — 12 December 2025
Document feedback
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