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PCF8583BS Datasheet(PDF) 9 Page - NXP Semiconductors |
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PCF8583BS Datasheet(HTML) 9 Page - NXP Semiconductors |
9 / 37 page PCF8583 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 06 — 6 October 2010 9 of 37 NXP Semiconductors PCF8583 Clock and calendar with 240 x 8-bit RAM 7.5 Alarm control register When the alarm enable bit of the control and status register is set (address 00h, bit 2) the alarm control register (address 08h) is activated. All alarm, timer, and interrupt output functions are controlled by the contents of the alarm control register (see Figure 10). Table 4. Cycle length of the time counters, clock modes Unit Counting cycle Carry to next unit Contents of month calendar hundredths of a second 00 to 99 99 to 00 - seconds 00 to 59 59 to 00 - minutes 00 to 59 59 to 00 - hours (24) 00 to 23 23 to 00 - hours (12) 12 am - - 01 am to 11 am - - 12 pm - - 01 pm to 11 pm 11 pm to 12 am - date 01 to 31 31 to 01 1, 3, 5, 7, 8, 10, and 12 01 to 30 30 to 01 4, 6, 9, and 11 01 to 29 29 to 01 2, year = 0 01 to 28 28 to 01 2, year = 1, 2, and 3 months 01 to 12 12 to 01 - year 0 to 3 - - weekdays 0 to 6 6 to 0 - timer 00 to 99 no carry - |
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