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AN3133 Datasheet(PDF) 36 Page - STMicroelectronics

Part # AN3133
Description  A real-time clock is a computer clock that keeps track of the current time
PDF  43 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3133 Datasheet(HTML) 36 Page - STMicroelectronics

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Application examples
AN3133
36/43
Doc ID 16956 Rev 5
Figure 22.
EXTI ISR flowchart for DOWN button
Figure 23.
EXTI ISR flowchart for KEY button
DOWN button ISR interrupt
ExTamper_05
Is configured Tamper Filter minimal?
No
Yes
Return to Main program
Select the previous
Preconfigured Tamper
Filter
Print on LCD the Current Tamper Filter
Clear Interrupt Pending bit
KEY button ISR interrupt
ExTamper_06
Return to Main program
LED1 ON
LED1 OFF
Get the current calendar time (s, ms)
and Print it on the LCD (Saved Time side)
Print on LCD the Current Tamper Filter
Clear Interrupt Pending bit



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