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PCF85363ATL/A 数据表(PDF) 25 Page - NXP Semiconductors |
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PCF85363ATL/A 数据表(HTML) 25 Page - NXP Semiconductors |
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25 / 86 page  NXP Semiconductors PCF85363A Tiny Real-Time Clock/calendar with 64 byte RAM, alarm function, battery switch-over time stamp input, and I2C-bus Timestamps work in both RTC and stop-watch mode. During battery operation, the mechanical switch detector may also be used to trigger the timestamp. 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 15. 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 Timestamp2 (TSR2) timestamp register 2 mode 000[1] no timestamp 001 FB, record First time switch to Battery event 4 to 2 TSR2M[2:0] 010 LB, record Last time switch to Battery event Table 19. TSR_mode - timestamp mode control register (address 23h) bit description PCF85363A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved. Product data sheet Rev. 3.1 — 18 June 2021 25 / 86 |
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