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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCF2129AT датащи(PDF) 45 Page - NXP Semiconductors |
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PCF2129AT датащи(HTML) 45 Page - NXP Semiconductors |
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45 / 86 page  PCF2129 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved. Product data sheet Rev. 7 — 19 December 2014 45 of 86 NXP Semiconductors PCF2129 Accurate RTC with integrated quartz crystal for industrial applications 8.12.1 Minute and second interrupts Minute and second interrupts are generated by predefined timers. The timers can be enabled independently from one another by the bits MI and SI in register Control_1. However, a minute interrupt enabled on top of a second interrupt cannot be distinguishable since it occurs at the same time. The minute/second flag MSF (register Control_2) is set logic 1 when either the seconds or the minutes counter increments according to the enabled interrupt (see Table 72). The MSF flag can be cleared by command. When SI, MI, WD_CD, AIE, TSIE, BIE, BLIE are all disabled, INT remains high-impedance. Fig 21. Interrupt block diagram |
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