Datasheet
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PCF2129 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 7 — 19 December 2014 9 of 86
NXP Semiconductors
PCF2129
Accurate RTC with integrated quartz crystal for industrial applications
13h Sec_timestp - SECOND_TIMESTP (0 to 59) - XXX XXXX Table 60 on page 41
14h Min_timestp - MINUTE_TIMESTP (0 to 59) - XXX XXXX Table 62 on page 42
15h Hour_timestp - - AMPM HOUR_TIMESTP (1 to 12) in 12-hour mode - - XX XXXX Table 64 on page 42
HOUR_TIMESTP (0 to 23) in 24-hour mode - - XX XXXX
16h Day_timestp - - DAY_TIMESTP (1 to 31) - - XX XXXX Table 66 on page 43
17h Mon_timestp - - - MONTH_TIMESTP (1 to 12) - - - X XXXX Table 68 on page 43
18h Year_timestp YEAR_TIMESTP (0 to 99) XXXX XXXX Table 70 on page 43
Aging offset register
19hAging_offset ---- AO[3:0] ----1000Table 17 on page 14
Internal registers
1AhInternal_reg -----------------
1BhInternal_reg -----------------
Table 5. Register overview
…continued
Bit positions labeled as - are not implemented and return 0 when read. Bits labeled as T must always be written with logic 0. Bits labeled as X are undefined at
power-on and unchanged by subsequent resets.
Address Register name Bit Reset value Reference
7 6 5 4 3 2 1 0