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PCF85263ATL/A Datasheet(PDF) 11 Page - NXP Semiconductors |
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PCF85263ATL/A Datasheet(HTML) 11 Page - NXP Semiconductors |
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11 / 102 page  NXP Semiconductors PCF85263A Tiny RTC/Calendar with Alarm Function, Battery Switch-Over, Time Stamp Input, and I2C-bus 7.1 Registers organization overview 7.1.1 Time mode registers The PCF85263A has two time mode register sets; one for the real-time clock mode and one for the stopwatch clock mode. The access to these registers can be switched by the RTCM bit in the function control register (28h). For details, see Table 6 and Table 53. RTCM real-time clock mode register set stopwatch mode register set 1 0 aaa-009600 Figure 9. Time mode register set selection 7.1.1.1 RTC mode time registers overview (RTCM = 0) Bit positions labeled as - are not implemented. After reset, all registers are set according to Table 61. Bit Address Register name 7 6 5 4 3 2 1 0 Reference RTC time and date registers 00h 100th_seconds 100TH_SECONDS (0 to 99) 01h Seconds OS SECONDS (0 to 59) 02h Minutes EMON MINUTES (0 to 59) AMPM HOURS (1 to 12) in 12-hour mode 03h Hours - - HOURS (0 to 23) in 24-hour mode 04h Days - - DAYS (1 to 31) 05h Weekdays - - - - - WEEKDAYS (0 to 6) 06h Months - - - MONTHS (1 to 12) 07h Years YEARS (0 to 99) Section 7.2 RTC alarm1 08h Second_alarm1 - SEC_ALARM1 (0 to 59) 09h Minute_alarm1 - MIN_ALARM1 (0 to 59) AMPM HR_ALARM1 (1 to 12) in 12-hour mode 0Ah Hour_alarm1 - - HR_ALARM1 (0 to 23) in 24-hour mode 0Bh Day_alarm1 - - DAY_ALARM1 (1 to 31) 0Ch Month_alarm1 - - - MON_ALARM1 (1 to 12) Section 7.4 RTC alarm2 0Dh Minute_alarm2 - MIN_ALARM2 (0 to 59) 0Eh Hour_alarm2 - - AMPM HR_ALARM2 (1 to 12) in 12-hour mode 0Fh Weekday_alarm2 - - - - - WDAY_ALARM2 (0 to 6) Section 7.4 RTC alarm enables 10h Alarm_enables WDAY_A2E HR_A2E MIN_A2E MON_A1E DAY_A1E HR_A1E MIN__A1E SEC__A1E Section 7.4 RTC timestamp1 (TSR1) Table 4. RTC mode time registers 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 11 / 102 |
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