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PCF2129AT 数据表(PDF) 35 Page - NXP Semiconductors |
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PCF2129AT 数据表(HTML) 35 Page - NXP Semiconductors |
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35 / 68 page  PCF2129A_1 © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 01 — 13 January 2010 35 of 68 NXP Semiconductors PCF2129A Integrated RTC, TCXO and quartz crystal 8.11.3.4 Register Hour_timestp [1] Hour mode is set by the bit 12_24 in register Control_1. 8.11.3.5 Register Day_timestp 8.11.3.6 Register Mon_timestp 8.11.3.7 Register Year_timestp Table 40. Hour_timestp - hour timestamp register (address 15h) bit description Bit Symbol Value Place value Description 7to6 - - - unused 12 hour mode[1] 5 AMPM 0 - indicates AM 1 - indicates PM 4 HOUR_TIMESTP 0 to 1 ten’s place hour timestamp information coded in BCD format when in 12 hour mode 3to0 0to9 unit place 24 hour mode[1] 5 to 4 HOUR_TIMESTP 0 to 2 ten’s place hour timestamp information coded in BCD format when in 24 hour mode 3to0 0to9 unit place Table 41. Day_timestp - day timestamp register (address 16h) bit description Bit Symbol Value Place value Description 7to6 - - - unused 5 to 4 DAY_TIMESTP 0 to 3 ten’s place day timestamp information coded in BCD format 3to0 0to9 unit place Table 42. Mon_timestp - month timestamp register (address 17h) bit description Bit Symbol Value Place value Description 7to5 - - - unused 4 MONTH_TIMESTP 0 to 1 ten’s place month timestamp information coded in BCD format 3to0 0to9 unit place Table 43. Year_timestp - year timestamp register (address 18h) bit description Bit Symbol Value Place value Description 7 to 4 YEAR_TIMESTP 0 to 9 ten’s place year timestamp information coded in BCD format 3to0 0to9 unit place |
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