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PCF85263ATL/AX 数据表(PDF) 29 Page - NXP Semiconductors |
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PCF85263ATL/AX 数据表(HTML) 29 Page - NXP Semiconductors |
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29 / 102 page  NXP Semiconductors PCF85263A Tiny RTC/Calendar with Alarm Function, Battery Switch-Over, Time Stamp Input, and I2C-bus The timestamp registers are read only and cannot be written. It is possible to set all three registers to 0 with the CTS instruction in the Resets register (Section 7.15). timer registers RTC mode seconds minutes : years stopwatch mode seconds minutes : 999999 hours timestamp register TSR1 timestamp register TSR2 timestamp register TSR3 TS pin battery switchover mode TSR1M[1:0] mode TSR2M[2:0] mode TSR3M[1:0] flag TSR1F flag TSR2F flag TSR3F load load load load aaa-009595 Figure 17. Timestamp The mode for each register is controlled by the TSR_mode register. Bit Symbol Value Description Timestamp3 (TSR3) timestamp register 3 mode 00 [1] no timestamp 01 FB, record First-time switch to Battery event 10 LB, record Last-time switch to Battery event 7 to 6 TSR3M[1:0] 11 LV, record Last-time switch to VDD event 5 - 0 not used Table 19. TSR_mode - timestamp mode control register (address 23h) 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 Document feedback 29 / 102 |
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