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PCF85263ATL/A Datasheet(PDF) 30 Page - NXP Semiconductors |
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PCF85263ATL/A Datasheet(HTML) 30 Page - NXP Semiconductors |
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30 / 100 page  PCF85263A All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 4.1 — 27 November 2015 30 of 100 NXP Semiconductors PCF85263A Tiny RTC with alarm, battery switch-over, and I2C-bus [1] Default value. First event means that the time is only stored on the first event and not recorded for subsequent events. When the first event occurs, the associated timestamp flag is set. When the flag is cleared, then a new ‘first’ event is recorded. See Figure 17 and Figure 18. Last event means that the time is stored on every event. When an event occurs, the associated timestamp flag is set. It is not necessary to clear the flag before a new event is recorded. Interrupts can be generated in INTA pin and/or INTB pin. Interrupts are generated every time a timestamp register is updated. Interrupt generation is not conditional on the state of the timestamp flags. See Section 8.7.1. Table 20. TSR_mode - timestamp mode control register (address 23h) bit description Bit Symbol Value Description Timestamp3 (TSR3) 7 to 6 TSR3M[1:0] 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 11 LV, record Last time switch to VDD event 5 - 0 not used Timestamp2 (TSR2) 4 to 2 TSR2M[2:0] timestamp register 2 mode 000[1] no timestamp 001 FB, record First time switch to Battery event 010 LB, record Last time switch to Battery event 011 LV, record Last time switch to VDD event 100 FE, record First TS pin Event 101 LE, record Last TS pin Event 110 to 111 no timestamp Timestamp1 (TSR1) 1 to 0 TSR1M[1:0] timestamp register 1 mode 00[1] no timestamp 01 FE, record First TS pin Event 10 LE, record Last TS pin Event 11 no timestamp |
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