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PCF8563 数据表(PDF) 14 Page - NXP Semiconductors |
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PCF8563 数据表(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 B.V. 2011. All rights reserved. Product data sheet Rev. 9 — 16 June 2011 14 of 45 NXP Semiconductors PCF8563 Real-time clock/calendar 8.6 Alarm registers 8.6.1 Register Minute_alarm [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. Table 18. Minute_alarm - minute alarm register (address 09h) bit description Bit Symbol Value Place value Description 7 AE_M 0 - minute alarm is enabled 1[1] - minute alarm is disabled 6 to 4 MINUTE_ALARM 0 to 5 ten’s place minute alarm information coded in BCD format 3 to 0 0 to 9 unit place 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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