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PCF85263ATL/A Datasheet(PDF) 55 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) 55 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
Registers labeled as - remain unchanged.
Bit
Address
Register name
7
6
5
4
3
2
1
0
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
11h to 16h Timestamp 1
0
0
0
0
0
0
0
0
17h to 1Ch Timestamp 2
0
0
0
0
0
0
0
0
1Dh to 22h Timestamp 3
0
0
0
0
0
0
0
0
23h
Timestamp_mode
0
0
0
0
0
0
0
0
24h
Offset
0
0
0
0
0
0
0
0
25h
Oscillator
0
0
0
0
0
0
0
0
26h
Battery_switch
0
0
0
0
0
0
0
0
27h
Pin_IO
0
0
0
0
0
0
0
0
28h
Function
0
0
0
0
0
0
0
0
29h
INTA_enable
0
0
0
0
0
0
0
0
2Ah
INTB_enable
0
0
0
0
0
0
0
0
2Bh
Flags
0
0
0
0
0
0
0
0
2Ch
RAM_byte
0
0
0
0
0
0
0
0
2Dh
WatchDog
0
0
0
0
0
0
0
0
2Fh
Reset
0
0
0
0
0
0
0
0
Table 61. Registers reset values...continued
7.15.2 CPR: clear prescaler
To set the time for RTC mode accurately or to clear the time in stop-watch mode, the
clear prescaler instruction is needed.
Before sending this instruction, it is recommended to first set stop either by the STOP bit
or by the TS pin (see STOPM bit).
See STOP definition for an explanation on using this instruction.
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
55 / 92



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