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RM0319 Folha de dados(PDF) 350 Page - STMicroelectronics

Nome de Peças RM0319
Descrição Electrónicos  SPEAr320S architecture and functionality
PDF  368 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

RM0319 Folha de dados(HTML) 350 Page - STMicroelectronics

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Real-time clock (RTC)
RM0319
350/368
Doc ID 022640 Rev 3
35
Real-time clock (RTC)
This chapter focuses on RTC functionality and operation.
For technical details about the programmable registers related to the RTC, refer to the RTC
registers in the following companion document:
●
RM0321: SPEAr320S address map and registers
35.1
Overview
The RTC is an APB slave block that keeps track of the real time of day. It also functions as
an alarm and a calendar. The time is displayed in 24-hour format, and time/calendar values
are stored in binary-coded decimal format.
35.2
Main features
●
Time-of-day clock in 24-hour mode
●
Calendar
●
Alarm capability
●
Two general purpose registers
●
Supports self-isolation mode, which allows RTC to work even if power is not supplied to
the rest of the device.



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