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PCF85263ATL/A Datenblatt(PDF) 20 Page - NXP Semiconductors

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

PCF85263ATL/A Datenblatt(HTML) 20 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
Bit positions labeled as - are not implemented.
Upper-digit (ten’s place)
Digit (unit place)
Address
Register name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0Ch
Month_alarm1
-
-
-
0 to 1
0 to 9
RTC alarm2 registers
0Dh
Minute_alarm2
-
0 to 5
0 to 9
AMPM 0 to 1
0 to 9
0Eh
Hour_alarm2
-
-
0 to 2
0 to 9
0Fh
Weekday_alarm2
-
-
-
-
-
0 to 6
Table 12. Alarm1 and alarm2 registers in RTC mode coded in BCD (RTCM = 0)...continued
7.4.1.2 Alarm1 and alarm2 control in RTC mode
Bit
Symbol
Value
Description
RTC alarm2
Weekday alarm2 enable
0 [1]
Disabled
7
WDAY_A2E
1
Enabled
Hour alarm2 enable
0 [1]
Disabled
6
HR_A2E
1
Enabled
Minute alarm2 enable
0 [1]
Disabled
5
MIN_A2E
1
Enabled
RTC alarm1
Month alarm1 enable
0 [1]
Disabled
4
MON_A1E
1
Enabled
Day alarm1 enable
0 [1]
Disabled
3
DAY_A1E
1
Enabled
Hour alarm1 enable
0 [1]
Disabled
2
HR_A1E
1
Enabled
Minute alarm1 enable
0 [1]
Disabled
1
MIN_A1E
1
Enabled
0
SEC_A1E
Second alarm1 enable
Table 13. Alarm_enables- alarm enable control register (address 10h) bit description
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
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