sam4s8c ATMEL Corporation, sam4s8c Datasheet - Page 23
sam4s8c
Manufacturer Part Number
sam4s8c
Description
At91sam Arm-based Flash Mcu
Manufacturer
ATMEL Corporation
Datasheet
1.SAM4S8C.pdf
(64 pages)
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5.7
11100AS–ATARM–27-Oct-11
Fast Startup
The SAM4S allows the processor to restart in a few microseconds while the processor is in wait
mode or in sleep 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 4/8/12 MHz Fast RC oscillator, switches the mas-
ter clock on this 4 MHz clock and reenables the processor clock.
Figure 5-5.
WKUP15
WKUP0
WKUP1
Fast Start-Up Sources
RTT Alarm
RTC Alarm
USB Alarm
FSTP0
FSTP1
FSTP15
FSTT0
FSTT1
FSTT15
RTTAL
RTCAL
USBAL
Figure
5-5, is fully asynchronous and provides a fast start-
fast_restart
23
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