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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCF8563BS/4 датащи(PDF) 14 Page - NXP Semiconductors |
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PCF8563BS/4 датащи(HTML) 14 Page - NXP Semiconductors |
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14 / 45 page  PCF8563 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 11 — 26 October 2015 14 of 45 NXP Semiconductors PCF8563 Real-time clock/calendar [1] Default value. 8.6.2 Register Hour_alarm [1] Default value. 8.6.3 Register Day_alarm [1] Default value. 8.6.4 Register Weekday_alarm [1] Default value. 8.6.5 Alarm flag By clearing the alarm enable bit (AE_x) of one or more of the alarm registers, the corresponding alarm condition(s) are active. When an alarm occurs, AF is set to logic 1. The asserted AF can be used to generate an interrupt (INT). The AF is cleared using the interface. The registers at addresses 09h through 0Ch contain alarm information. When one or more of these registers is loaded with minute, hour, day or weekday, and its corresponding AE_x is logic 0, then that information is compared with the current minute, hour, day, and weekday. When all enabled comparisons first match, the alarm flag (AF in register Control_2) is set to logic 1. Table 19. Hour_alarm - hour alarm register (address 0Ah) bit description Bit Symbol Value Place value Description 7 AE_H 0 - hour alarm is enabled 1[1] - hour alarm is disabled 6 - - - unused 5 to 4 HOUR_ALARM 0 to 2 ten’s place hour alarm information coded in BCD format 3 to 0 0 to 9 unit place Table 20. Day_alarm - day alarm register (address 0Bh) bit description Bit Symbol Value Place value Description 7 AE_D 0 - day alarm is enabled 1[1] - day alarm is disabled 6 - - - unused 5 to 4 DAY_ALARM 0 to 3 ten’s place day alarm information coded in BCD format 3 to 0 0 to 9 unit place Table 21. Weekday_alarm - weekday alarm register (address 0Ch) bit description Bit Symbol Value Description 7 AE_W 0 weekday alarm is enabled 1[1] weekday alarm is disabled 6 to 3 - - unused 2 to 0 WEEKDAY_ALARM 0 to 6 weekday alarm information |
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