SAM3N0C Atmel Corporation, SAM3N0C Datasheet - Page 22

• Manufacturer Part Number: SAM3N0C
• Manufacturer: Atmel Corporation

5.7
22
Fast Start-Up
SAM3N
The SAM3N allows the processor to restart in a few microseconds while the processor is in wait
mode. A fast start up can occur upon detection of a low level on one of the 19 wake-up inputs
(WKUP0 to 15 + SM + RTC + RTT).
The fast restart circuitry, as shown in
up signal to the Power Management Controller. As soon as the fast start-up signal is asserted,
the PMC automatically restarts the embedded 4 MHz fast RC oscillator, switches the master
clock on this 4 MHz clock and reenables the processor clock.
Figure 5-5.
WKUP15
WKUP0
Fast Start-Up Sources
rtc_alarm
rtt_alarm
Falling/Rising
Falling/Rising
Detector
Detector
Edge
Edge
RTCEN
RTTEN
Figure
FSTT15
FSTT0
5-5, is fully asynchronous and provides a fast start-
11011A–ATARM–04-Oct-10
fast_restart