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SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
16.3
Block Diagram
Figure 16-1. RTC Block Diagram
16.4
Product Dependencies
16.4.1 Power Management
The Real-time Clock is continuously clocked at 32768 Hz. The Power Management Controller has no effect on RTC 
behavior.
16.4.2 Interrupt
RTC interrupt line is connected on one of the internal sources of the interrupt controller. RTC interrupt requires the 
interrupt controller to be programmed first.
User Interface
32768 Divider
Time
Slow Clock: SLCK
APB
Date
RTC Interrupt
Entry 
Control
Interrupt 
Control
Clock Calibration
RTCOUT0
RTCOUT1
Wave
Generator
Alarm