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STM32F318C8 bảng dữ liệu(PDF) 24 Page - STMicroelectronics |
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STM32F318C8 bảng dữ liệu(HTML) 24 Page - STMicroelectronics |
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24 / 125 page ![]() Functional overview STM32F318C8 STM32F318K8 24/125 DocID026294 Rev 5 The RTC is an independent BCD timer/counter. It supports the following features: Calendar with subsecond, seconds, minutes, hours (12 or 24 format), week day, date, month, year, in BCD (binary-coded decimal) format. Automatic correction for 28, 29 (leap year), 30, and 31 days of the month. Two programmable alarms with wake up from Stop mode capability. On-the-fly correction from 1 to 32767 RTC clock pulses. This can be used to synchronize it with a master clock. Digital calibration circuit with 1 ppm resolution, to compensate for quartz crystal inaccuracy. Two anti-tamper detection pins with programmable filter. The MCU can be woken up from Stop mode on tamper event detection. Timestamp feature which can be used to save the calendar content. This function can be triggered by an event on the timestamp pin, or by a tamper event. The MCU can be woken up from Stop mode on timestamp event detection. 17-bit Auto-reload counter for periodic interrupt with wakeup from STOP capability. The RTC clock sources can be: A 32.768 kHz external crystal A resonator or oscillator The internal low-power RC oscillator (typical frequency of 40 kHz) The high-speed external clock divided by 32. |
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