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STM8L151F3 Folha de dados(PDF) 19 Page - STMicroelectronics |
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STM8L151F3 Folha de dados(HTML) 19 Page - STMicroelectronics |
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19 / 122 page  DocID018780 Rev 9 19/122 STM8L151x2, STM8L151x3 Functional overview 49 Figure 2. Low-density STM8L151x2/3 clock tree diagram 3.5 Low power real-time clock The real-time clock (RTC) is an independent binary coded decimal (BCD) timer/counter. Six byte locations contain the second, minute, hour (12/24 hour), week day, date, month, year, in BCD (binary coded decimal) format. Correction for 28, 29 (leap year), 30, and 31 day months are made automatically. It provides a programmable alarm and programmable periodic interrupts with wakeup from Halt capability. • Periodic wakeup time using the 32.768 kHz LSE with the lowest resolution (of 61 µs) is from min. 122 µs to max. 3.9 s. With a different resolution, the wakeup time can reach 36 hours • Periodic alarms based on the calendar can also be generated from every second to every year |
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