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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCF8523TS/1 датащи(PDF) 29 Page - NXP Semiconductors |
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PCF8523TS/1 датащи(HTML) 29 Page - NXP Semiconductors |
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29 / 75 page  PCF8523 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Product data sheet Rev. 4 — 5 July 2012 29 of 74 NXP Semiconductors PCF8523 Real-Time Clock (RTC) and calendar 8.8.1 Correction when MODE = 0 The correction is triggered once per two hours and then correction pulses are applied once per minute until the programmed correction values have been implemented. [1] The correction pulses on pin INT1 are 1⁄64 s wide. In MODE = 0, any timer or clock output using a frequency below 64 Hz is affected by the clock correction (see Table 31). Table 30. Correction pulses for MODE = 0 Correction value Hour Minute Correction pulses on INT1 per minute[1] +1 or 1 02001 +2 or 2 02 00 and 01 1 +3 or 3 02 00, 01, and 02 1 :::: +59 or 59 02 00 to 58 1 +60 or 60 02 00 to 59 1 +61 or 61 02 00 to 59 1 03 00 1 +62 or 62 02 00 to 59 1 03 00 and 01 1 +63 or 63 02 00 to 59 1 03 00, 01, and 02 1 64 02 00 to 59 1 03 00, 01, 02, and 03 1 Table 31. Effect of clock correction for MODE = 0 CLKOUT frequency (Hz) Effect of correction Timer source clock frequency (Hz) Effect of correction 32768 no effect 4096 no effect 16384 no effect 64 no effect 8192 no effect 1 affected 4096 no effect 1⁄60 affected 1024 no effect 1⁄3600 affected 32 affected - - 1affected - - |
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